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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1181. Отображено 100.
07-03-2013 дата публикации

Dehydrofluorination of pentafluoroalkanes to form tetrafluoroolefins

Номер: US20130060069A1
Автор: Benjamin Bin Chen, Maher Y. Elsheikh, Olga C.N. Keeley, Philippe Bonnet
Принадлежит: Arkema Inc

A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-123434), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3?xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).

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Номер записи: 1
10-10-2013 дата публикации

CATALYST CERAMIC SUPPORT HAVING A CONTROLLED MICROSTRUCTURE

Номер: US20130266802A1
Автор: Bonhomme Claire, Chartier Thierry, Del-Gallo Pascal, Faure Raphael, Goudalle Sebastien, Rossignol Fabrice
Принадлежит:

The invention relates to a catalyst support made of a ceramic, the support comprising an arrangement of crystallites having the same size, the same isodiametric morphology and the same chemical composition or substantially the same size, the same isodiametric morphology and the same chemical composition, in which each crystallite makes point contact or almost point contact with the surrounding crystallites. 114-. (canceled)15. A ceramic catalyst support comprising an arrangement of crystallites of equal size , equal isodiametric morphology , and equal chemical composition , or of substantially equal size , equal isodiametric morphology and equal chemical composition , in which each crystallite is in point or quasi-point contact with surrounding crystallites.16. The ceramic catalyst support of claim 15 , wherein the arrangement of crystallites is a face-centered cubic or hexagonal close-packed stack in which each crystallite is in point or quasi-point contact with not more than 12 other crystallites in a 3-dimensional space.17. The ceramic catalyst support of claim 15 , wherein said arrangement is in spinel phase.18. The ceramic catalyst support of claim 15 , wherein the crystallites are substantially spherical in shape.19. The ceramic catalyst support of claim 18 , wherein the crystallites have a mean equivalent diameter of between 5 and 15 nm claim 18 , preferably between 11 and 14 nm.20. The ceramic catalyst support of claim 15 , wherein said support comprises a substrate and a film on the surface of said substrate comprising said arrangement of crystallites.21. The ceramic catalyst support of claim 15 , wherein said support comprises granules comprising said arrangement of crystallites.22. The ceramic catalyst support of claim 21 , wherein the granules are substantially spherical in shape.23. The method for synthesizing a ceramic catalyst support of claim 20 , comprising the following steps:a) preparing a sol comprising magnesium nitrate and aluminum nitrate ...

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Номер записи: 2
05-01-2017 дата публикации

Egg-shell type hybrid structure of highly dispersed nanoparticle-metal oxide support, preparation method thereof, and use thereof

Номер: US20170001168A1
Автор: Dong Hyun Chun, Heon Jung, Ho Tae Lee, Jae In Kwon, Ji Chan Park, Jung Il Yang, Sung Jun Hong
Принадлежит: Korea Institute of Energy Research KIER

The present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, a preparation method thereof, and a use thereof. Specifically, the present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, providing an excellent platform in a size of nanometers or micrometers which can support nanoparticles selectively in the porous shell portion by employing a metal oxide support with an average diameter of nanometers or micrometers including a core of nonporous metal oxide and a shell of porous metal oxides, a preparation method thereof, and a use thereof.

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Номер записи: 3
05-01-2017 дата публикации

METHOD FOR PREPARING CATALYST USED FOR PREPARING CHLORINE, CATALYST AND METHOD FOR PREPARING CHLORINE

Номер: US20170001178A1
Автор: Ding Jiansheng, Hua Weiqi, Lou Yinchuan, LV Yang, SHAO Liangfeng, Yi Guangquan, Zhang Hongke
Принадлежит:

The present invention relates to a method for preparing catalyst used for preparing chlorine by oxidizing hydrogen chloride. The method is mixing a slurry mainly containing boron and chromium with a slurry mainly containing copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally other metal elements, the mixing temperature being not more than 100° C., and the residence time being not more than 120 minutes, the mixed slurry is successively treated with spray drying, high temperature calcination, so that the catalyst is obtained. The present invention also relates to the catalyst prepared through the method, use of the catalyst used in the process of preparing chlorine by oxidizing hydrogen chloride and a method for preparing chlorine by using the catalyst. The catalyst is used for preparing chlorine by oxidizing hydrogen chloride with oxygen or air in fluidized bed reactor. 1. A method for preparing catalysts used for preparing chlorine by oxidizing hydrogen chloride , comprising the steps of:mixing a slurry A with a slurry B under the condition of a mixing temperature being >X° C. and ≦100° C., and a residence time being ≦120 minutes to obtain a mixed slurry;treating the mixed slurry with spray drying to obtain catalyst precursor particles; andcalcining the catalyst precursor particles to obtain the catalysts,wherein, X° C. is the highest value among the solidifying points of slurry A, slurry B and the mixed slurry; slurry A is acidic and contains boron and chromium; slurry B contains copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally at least one of other metal elements selected from the group consisting of magnesium, calcium, barium, manganese, ruthenium and titanium.2. The method according to claim 1 , wherein slurry A is formed by mixing boron-containing compound claim 1 , chromium-containing compound and water; based on the weight of slurry A claim 1 , ...

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Номер записи: 4
05-01-2017 дата публикации

METHANE STEAM REFORMING, USING NICKEL/ALUMINA NANOCOMPOSITE CATALYST OR NICKEL/SILICA-ALUMINA HYBRID NANOCOMPOSITE CATALYST

Номер: US20170001863A1
Автор: Jung Heon, Lim Tak Hyoung, Park Ji Chan, Yang Jung Il
Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

The present invention relates to a method of methane steam reforming using a nickel/alumina nanocomposite catalyst. More specifically, the present invention relates to a method of carrying out methane steam reforming using a nickel/alumina nanocomposite catalyst wherein nickel metal nanoparticles are uniformly loaded in a high amount on a support via a melt infiltration method with an excellent methane conversion even under a relatively severe reaction condition of a high gas hourly space velocity or low steam supply, and to a catalyst for this method. In addition, the present invention prepares a nickel/silica-alumina hybrid nanocatalyst by mixing the catalyst prepared by the melt infiltration method as the first catalyst and the nickel silica yolk-shell catalyst as the second catalyst, and applies it to the steam reforming of methane to provide a still more excellent catalytic activity even under the higher temperature of ° C. or more with the excellent methane conversion. 150. A method of methane steam reforming with a methane conversion of % or more , which comprisesi) a step of providing a first catalyst for methane steam reforming which is prepared by a first step of grinding and mixing a porous alumina support and a nickel-containing compound having a melting point lower than the porous alumina support, and melt-infiltrating the nickel-containing compound into pores of the surface, inside, or both of the porous alumina support in a closed system at a temperature ranging from the melting point of the nickel-containing compound to ±5° C. higher than the melting point; and a second step of thermally treating the melt-infiltrated composite powder at 400 to 600° C. under reducing gas atmosphere to load nickel particles having the average particle size of 10 nm or less in the porous alumina support; ora nickel silica-alumina hybrid catalyst comprising the first catalyst; and a yolk-shell shaped second catalyst for methane steam reforming which has a nano- or micro- ...

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Номер записи: 5
14-01-2016 дата публикации

Nickel hexaaluminate-containing catalyst for reforming hydrocarbons in the presence of carbon dioxide

Номер: US20160008791A1
Автор: Andrian Milanov, Bernd HINRICHSEN, Ekkehard Schwab, Gerhard Cox, Guido Wasserschaff, Stephan Schunk, Thomas Roussiere, Ulrich FLOERCHINGER
Принадлежит: BASF SE

The invention relates to a nickel hexaaluminate-comprising catalyst for reforming hydrocarbons, preferably methane, in the presence of carbon dioxide, which comprises hexaaluminate in a proportion in the range from 65 to 95% by weight, preferably from 70 to 90% by weight, and a crystalline, oxidic secondary phase selected from the group consisting of LaAlO 3 , SrAl 2 O 4 and BaAl 2 O 4 in the range from 5 to 35% by weight, preferably from 10 to 30% by weight. The BET surface area of the catalyst is ≧5 m 2 /g, preferably ≧10 m 2 /g. The molar nickel content of the catalyst is ≦3 mol %, preferably ≦2.5 mol % and more preferably ≦2 mol %. The interlayer cations are preferably Ba and/or Sr. The process for producing the catalyst comprises the steps: (i) production of a mixture of metal salts, preferably nitrate salts of Ni and also Sr and/or La, and a nanoparticulate aluminum source, (ii) molding and (iii) calcination. The catalyst of the invention is brought into contact with hydrocarbons, preferably methane, and CO 2 in a reforming process, preferably at a temperature of >800° C. The catalyst is also distinguished by structural and preferred properties of the nickel, namely that the nickel particles mostly have a tetragonal form and the particles have a size of ≦50 nm, preferably ≦40 nm and particularly preferably ≦30 nm, and are present finely dispersed as grown-on hexaaluminate particles. The catalyst has only a very low tendency for carbonaceous deposits to be formed.

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Номер записи: 6
14-01-2016 дата публикации

HYDROPROCESSING CATALYST FOR TREATING A HYDROCARBON FEED HAVING AN ARSENIC CONCENTRATION AND A METHOD OF MAKING AND USING SUCH CATALYST

Номер: US20160008795A1
Автор: GINESTRA Josiane Marie-Rose
Принадлежит:

A catalyst that is useful for the removal of arsenic from hydrocarbon feedstocks. The catalyst comprises an alumina support, underbedded molybdenum and phosphorus components, and an overlayer of a nickel component. The catalyst further has the unique property of having a surface nickel-to-molybdenum atomic ratio of greater than 1.8 with a bulk nickel-to-molybdenum atomic ratio of less than 2.2. The nickel accessibility factor of the catalyst is greater than 1.2. The catalyst is prepared by the application of two metals impregnation steps with associated calcination steps that in combination provide for the underbedded metals and overlayer of nickel. 1. A catalyst composition for hydroprocessing a hydrocarbon feedstock having a concentration of arsenic compounds , wherein said catalyst composition comprises:an alumina support;an underbedded molybdenum component;an underbedded phosphorus component;an overlaid nickel component;wherein said catalyst composition has a surface nickel metal-to-molybdenum metal atomic ratio of greater than 1.8 as determined by X-ray Photoelectron Spectroscopy.2. A catalyst composition as recited in claim 1 , wherein said catalyst composition has a nickel accessibility factor (i.e. claim 1 , surface Ni/Mo ratio-to-bulk Ni/Mo ratio) greater than 1.2.3. A catalyst composition as recited in claim 1 , wherein said catalyst composition has a bulk nickel metal-to-molybdenum metal atomic ratio of less than 2.2.4. A catalyst composition as recited in claim 3 , wherein said catalyst composition comprises: nickel in an amount in the range of from 7 wt. % to 20 wt. % claim 3 , calculated as elemental nickel and based on the total weight of said catalyst composition; and molybdenum in an amount in the range of from 3 wt. % to 20 wt. % claim 3 , calculated as elemental molybdenum and based on the total weight of said catalyst composition; and phosphorus in an amount in the range of from 0.1 wt. % to 5 wt. % claim 3 , calculated as elemental phosphorus ...

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Номер записи: 7
21-01-2016 дата публикации

HOLLOW NANOPARTICLES WITH HYBRID DOUBLE LAYERS

Номер: US20160015652A1
Автор: JOHN Vijay, McPherson Gary
Принадлежит:

The present invention discloses the morphology of hollow, double-shelled submicrometer particles generated through a rapid aerosol-based process. The inner shell is an essentially hydrophobic carbon layer of nanoscale dimension (5-20 nm), and the outer shell is a hydrophilic silica layer of approximately 5-40 nm, with the shell thickness being a function of the particle size. The particles are synthesized by exploiting concepts of salt bridging to lock in a surfactant (CTAB) and carbon precursors together with iron species in the interior of a droplet. This deliberate negation of surfactant templating allows a silica shell to form extremely rapidly, sealing in the organic species in the particle interior. Subsequent pyrolysis results in a buildup of internal pressure, forcing carbonaceous species against the silica wall to form an inner shell of carbon. The incorporation of magnetic iron oxide into the shells opens up applications in external stimuli-responsive nanomaterials.

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Номер записи: 8
17-01-2019 дата публикации

MULTI-METALLIC CATALYST DOPED WITH PHOSPHORUS AND A LANTHANIDE

Номер: US20190015819A1
Автор: AVENIER Priscilla, DIEHL Fabrice, GUEGAN Carine, SANCHEZ Eric
Принадлежит: IFP ENERGIES NOUVELLES

The invention relates to a catalyst comprising a support, at least one noble metal M, tin, phosphorus and at least one lanthanide group element, the content of phosphorus element being comprised between 0.4 and 1% by weight, and the content of lanthanide group element(s) being less than 1% by weight with respect to the weight of the catalyst. The invention also relates to the process for the preparation of the catalyst and the use thereof in reforming. 1. Catalyst comprising a support , at least one noble metal M , tin , phosphorus and at least one lanthanide group element , the content of phosphorus element being comprised between 0.4 and 1% by weight , and the content of lanthanide group element(s) being less than 1% by weight with respect to the weight of the catalyst.2. Catalyst according to claim 1 , in which the content of noble metal M is comprised between 0.02 and 2% by weight with respect to the weight of the catalyst.3. Catalyst according to claim 1 , in which the metal M is platinum or palladium.4. Catalyst according to claim 1 , in which the tin content is comprised between 0.005 and 10% by weight with respect to the weight of the catalyst.5. Catalyst according to claim 1 , in which the content of lanthanide group element is comprised between 0.01 and 0.5% by weight with respect to the weight of the catalyst.6. Catalyst according to claim 1 , in which the lanthanide group element is cerium.7. Catalyst according to claim 1 , in which the Sn/M atomic ratio is comprised between 0.5 and 4.0 claim 1 , the P/M ratio is comprised between 0.2 and 30.0 claim 1 , and the lanthanide(s)/M ratio is comprised between 0.1 and 5.0.8. Catalyst according to claim 1 , in which the support comprises silica claim 1 , alumina or silica-alumina.9. Catalyst according to claim 1 , which additionally contains a halogenated compound.10. Catalyst according to claim 9 , in which the content of halogenated compound is comprised between 0.1 and 8% by weight with respect to the weight ...

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Номер записи: 9
15-01-2015 дата публикации

WC/CNT, WC/CNT/Pt Composite Material and Preparation Process Therefor and Use Thereof

Номер: US20150018199A1
Автор: Chen Zhao-Yang, Chu You-Qun, Lin Wen-Feng, Ma Chun-An
Принадлежит:

Disclosed are WC/CNT, WC/CNT/Pt composite material and preparation process therefor and use thereof. The WC/CNT/Pt composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, carbon nanotubes and platinum nanoparticles, with the carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward, and the platinum nanoparticles growing on the surfaces of the mesoporous spherical tungsten carbide and carbon nanotubes. The WC/CNT composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, and carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward. The WC/CNT/Pt composite material can be used as an electro-catalyst in a methanol flue battery, significantly improving the catalytic conversion rate and the service life of the catalyst. The WC/CNT composite material can be used as an electro-catalyst in the electro-reduction of a nitro aromatic compound, significantly improving the efficiency of organic electro-synthesis. 1. A tungsten carbide/carbon nanotube/platinum composite material , wherein the tungsten carbide/carbon nanotube/platinum composite material comprises mesoporous spherical tungsten carbide of 1-5 microns in diameter , carbon nanotubes and platinum nanoparticles , wherein the carbon nanotubes grow on the surface of the mesoporous spherical tungsten carbide and extend outwardly therefrom , and the platinum nanoparticles grow on the surfaces of the mesoporous spherical tungsten carbide and the carbon nanotubes.2. A method for preparing the tungsten carbide/carbon nanotube/platinum composite material of claim 1 , wherein the method comprises the following steps:(1) pelletizing a solution of a mixture of ammonium metatungstate and ferric nitrate by spray drying; carbonizing the resulting particles by temperature programmed gas-solid reaction process directly or after calcination to obtain a tungsten ...

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Номер записи: 10
17-04-2014 дата публикации

CORE-SHELL NANOPARTICULATE COMPOSITIONS AND METHODS

Номер: US20140106260A1
Автор: CARGNELLO Matteo, FORNASIERO PAOLO, GORTE Raymond J.
Принадлежит: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA

Core-shell nanoparticulate compositions and methods for making the same are disclosed. In some embodiments core-shell nanoparticulate compositions comprise transition metal core encapsulated by metal oxide shell. Methods of catalysis comprising core-shell nanoparticulate compositions of the invention are disclosed. Compositions comprising core-shell nanoparticles displayed on a metal-oxide support and methods for preparing the same are also disclosed. In some embodiments compositions comprise core-shell nanoparticles displayed as a substantially single layer superposed on a metal oxide support. Methods of catalysis employing the supported core-shell nanoparticles are disclosed. 1. A core-shell nanoparticulate composition comprising late-transition-metal core encapsulated by metal oxide shell , said shell comprising CeO , HfO , TiO , ZnO , ZrO , or a combination thereof.2. The composition of claim 1 , the late-transition-metal core comprising Pd or Pt.3. A core-shell nanoparticulate composition comprising a late-transition-metal core encapsulated by metal oxide shell comprising at least one oxide of a metal of Group 3 claim 1 , 4 claim 1 , or 5.4. The composition of claim 3 , wherein the late-transition-metal core contains no more than 50 wt % Pd relative to the weight of the entire core.5. The composition of claim 3 , the late-transition-metal core comprising Pt.6. The composition of claim 3 , the metal oxide shell comprising CeO claim 3 , HfO claim 3 , TiO claim 3 , ZrO claim 3 , or a combination thereof.7. The composition of claim 3 , the transition metal core having a diameter in a range of about 1 nm to about 10 nm.8. A composition comprising a plurality of core-shell nanoparticles of the composition of claim 3 , said nanoparticles displayed on a metal oxide support claim 3 , the core-shell nanoparticles comprising a Pt core encapsulated by a metal oxide shell.9. The composition of claim 8 , the metal oxide shell comprising CeO claim 8 , HfO claim 8 , TiO claim ...

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Номер записи: 11
25-01-2018 дата публикации

METHODS FOR THE PREPARATION OF ALUMINA BEADS FORMED BY DEWATERING A HIGHLY DISPERSIBLE GEL

Номер: US20180021754A1
Автор: BOUALLEG Malika, Dandeu Aurelie
Принадлежит: IFP ENERGIES NOUVELLES

A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads is described, said beads being prepared by shaping an alumina gel having a high dispersibility by drop coagulation. The alumina gel is itself prepared using a specific precipitation preparation process in order to obtain at least 40% by weight of alumina with respect to the total quantity of alumina formed at the end of the gel preparation process right from the first precipitation step, the quantity of alumina formed at the end of the first precipitation step possibly even reaching 100%. The invention also concerns the use of alumina beads as a catalyst support in a catalytic reforming process. 1. A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads , said process comprising at least the following steps:{'sub': 2', '3, 'a) at least one first step for the precipitation of alumina, in an aqueous reaction medium, using at least one basic precursor selected from sodium aluminate, potassium aluminate, ammonia, sodium hydroxide and potassium hydroxide and at least one acidic precursor selected from aluminium sulphate, aluminium chloride, aluminium nitrate, sulphuric acid, hydrochloric acid and nitric acid, in which at least one of the basic or acidic precursors comprises aluminium, the relative flow rate of the acidic and basic precursors being selected in a manner such as to obtain a pH of the reaction medium in the range 8.5 to 10.5 and the flow rate of the acidic and basic precursor or precursors containing aluminium being regulated in a manner such as to obtain a percentage completion of said first step in the range 40% to 100%, the percentage completion being defined as ...

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Номер записи: 12
25-01-2018 дата публикации

Platinum group metal (pgm) catalysts for automotive emissions treatment

Номер: US20180021756A1
Автор: Andreas Sundermann, Andrey Karpov, David PRELI, Knut Wassermann, PING Lu, Sang-Ii Choi, Younan Xia
Принадлежит: BASF Corp, Georgia Tech Research Corp

Catalytic materials for exhaust gas purifying catalyst composites comprise platinum group metal (PGM)-containing catalysts whose PGM component(s) are provided as nanoparticles and are affixed to a refractory metal oxide, which may be provided as a precursor. Upon calcination of the catalysts, the PGM is thermally affixed to and well-dispersed throughout the support. Excellent conversion of hydrocarbons and nitrogen oxides can advantageously be achieved using such catalysts.

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Номер записи: 13
25-01-2018 дата публикации

RHODIUM-CONTAINING CATALYSTS FOR AUTOMOTIVE EMISSIONS TREATMENT

Номер: US20180021757A1
Автор: Choi Sang-Il, KARPOV Andrey, Preli David, SUNDERMANN Andreas, WASSERMANN Knut, Xia Younan
Принадлежит:

Catalytic materials, and in particular, rhodium-containing catalytic materials for exhaust gas purifying catalyst composites are provided herein. Such materials comprise multimetallic Rh-containing nanoparticles, which are present primarily inside aggregated particles of a support (such as alumina). Such catalytic materials can exhibit excellent conversion of hydrocarbons and nitrogen oxides. 1. A catalytic material comprising:a porous refractory metal oxide support in the form of aggregated particles; anda plurality of rhodium-containing multimetallic nanoparticles, wherein at least about 50% by weight of the nanoparticles are located inside the aggregated particles of the support.2. The catalytic material of claim 1 , wherein at least about 90% by weight of the nanoparticles are located inside the aggregated particles of the support.3. The catalytic material of claim 1 , wherein the support comprises alumina.4. The catalytic material of claim 1 , wherein the rhodium-containing multimetallic nanoparticles comprise palladium-rhodium bimetallic nanoparticles.5. The catalytic material of claim 1 , wherein the average primary particle size of the rhodium-containing multimetallic nanoparticles is about 1 to about 20 nm as measured by Transmission Electron Microscopy (TEM).6. The catalytic material of claim 1 , wherein the rhodium-containing multimetallic nanoparticles are colloidally delivered and thermally affixed to the support to form the catalytic material.7. The catalytic material of claim 1 , wherein the average aggregated particle size of the support is about 1 micron or greater as measured by Scanning Electron Microscopy (SEM).8. The catalytic material of claim 1 , wherein an average primary particle size of the support is about 1 to about 100 nm as measured by Transmission Electron Microscopy (TEM).9. The catalytic material of claim 1 , wherein the support is colloidally delivered.10. The catalytic material of claim 1 , wherein the support is pre-calcined.11. ...

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Номер записи: 14
26-01-2017 дата публикации

DEHYDROFLUORINATION OF PENTAFLUOROALKANES TO FORM TETRAFLUOROOLEFINS

Номер: US20170022128A1
Автор: Bonnet Philippe, Chen Benjamin bin, Elsheikh Maher Y., KEELEY Olga C. N.
Принадлежит:

A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF.xHO, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf). 1. A method for producing 2 ,3 ,3 ,3-tetrafluoropropene (HFO-1234yf) comprising dehydrofluorinating a pentafluoroalkane selected from the group consisting of 1 ,1 ,1 ,2 ,2-pentafluoropropane (HFC-245cb) , 1 ,1 ,1 ,2 ,3-pentafluoropropane (HFC-245eb) and mixtures thereof in a gas phase in the presence of a a chromium oxyfluoride catalyst , containing 0-20 weight % a co-catalyst selected from the group consisting of Zn , Ni , Co , Mn , and Mg.2. A method according to claim 1 , wherein the catalyst comprises a support selected from the group consisting of alumina claim 1 , graphite claim 1 , chromia claim 1 , zirconia claim 1 , titania claim 1 , magnesia claim 1 , activated carbon claim 1 , their corresponding HF-activated compounds claim 1 , and mixtures thereof.3. A method according to claim 1 , wherein the catalyst is formed by calcining CrF.xHO claim 1 , where x is 1-10 claim 1 , in the presence of a flowing gas comprising nitrogen or air to form a calcined chromium oxyfluoride.4. A method according to claim 3 , wherein the catalyst is not activated with hydrogen fluoride.5. A method according to claim 1 , wherein the catalyst is formed by calcining chromium (III) fluoride tetrahydrate.6. A method according to claim 1 , wherein the catalyst is formed by activating CrOwith a mixture of hydrogen fluoride and air claim 1 , to ...

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Номер записи: 15
10-02-2022 дата публикации

LIGHT UPCONVERSION MICROCAPSULES

Номер: US20220040682A1
Автор: Campbell Eric J., Czaplewski-Campbell Sarah K., Kobilka Brandon M., Wertz Jason T.
Принадлежит:

A composition, method, and article of manufacture are disclosed. The composition is a microcapsule that includes a transparent shell encapsulating a mixture comprising light upconversion molecules. The method is a method of forming a microcapsule, which includes obtaining light upconversion molecules, forming an emulsion of the light upconversion molecules and a shell formation solution, and encapsulating the light upconversion molecules in a transparent shell. The article of manufacture comprises the microcapsule. 1. A microcapsule , comprising:a transparent shell encapsulating a mixture, the mixture comprising light upconversion molecules.2. The microcapsule of claim 1 , wherein the light upconversion molecules comprise a molecular sensitizer and a molecular annihilator.3. The microcapsule of claim 1 , wherein the mixture further comprises a non-polar solvent.4. The microcapsule of claim 1 , wherein the transparent shell is a urea-formaldehyde shell.5. The microcapsule of claim 1 , wherein the light upconversion molecules comprise a molecular sensitizer selected from the group consisting of a transition metal complex of a porphyrin and a transition metal complex of a phthalocyanine.6. The microcapsule of claim 1 , wherein the light upconversion molecules comprise a molecular annihilator selected from the group consisting of a furanyldiketopyrrolopyrrole and a perylene.7. A method of forming a microcapsule claim 1 , comprising:obtaining light upconversion molecules;forming an emulsion that includes the light upconversion molecules and a shell formation solution; andencapsulating the light upconversion molecules in a transparent shell.8. The method of claim 7 , wherein the light upconversion molecules comprise a molecular sensitizer and a molecular annihilator.9. The method of claim 8 , further comprising:forming a reaction system that includes the microcapsule, a photocatalyst, and a substrate; andexposing the reaction system to light having sufficient energy to ...

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Номер записи: 16
23-01-2020 дата публикации

Apparatus and Method for Making Spherical Catalyst Beads

Номер: US20200023326A1
Автор: Ellis-Terrell Carol A, LIN Ke, Wei Ronghua
Принадлежит:

Apparatuses and methods for making uniform spherical beads are disclosed. Specifically, the uniform spherical beads are made by dropping droplets on a droplet rolling part, creating beads by rolling the droplets on the droplet rolling part from one spot to another spot, and collecting the beads by a beads collector. 1. An apparatus for making spherical beads from a liquid suspension , comprising:a droplet generating device for generating droplets;a droplet rolling part comprising at least one omniphobic-coated plate; anda beads collector,wherein the droplets move from one spot of the droplet rolling part to another spot before reaching the beads collector.2. The apparatus according to claim 1 , wherein the droplet generating device comprises a fluid reservoir and a tip.3. The apparatus according to claim 1 , wherein the size of the droplets is adjustable by adjusting the volume of the liquid suspension in the droplet generating device.4. The apparatus according to claim 1 , wherein the at least one omniphobic-coated plate is inclined.5. The apparatus according to claim 4 , wherein the angle between the omniphobic-coated plate and the horizontal plane is between 0 and 90 degrees.6. The apparatus according to claim 1 , wherein the droplet rolling part further comprises at least one heating element.7. The apparatus according to claim 6 , wherein the droplet rolling part is heated to a temperature between about 80° C. and about 120° C.8. The apparatus according to claim 1 , wherein the at least one omniphobic-coated plate comprises a super-omniphobic coating layer on the surface.9. The apparatus according to claim 1 , wherein the at least one omniphobic-coated plate is superhydrophobic claim 1 , superoleophobic claim 1 , thermal stable and durable.10. The apparatus according to claim 1 , wherein the beads collector comprises a omniphobic-coated plate for collecting spherical beads.11. The apparatus according to claim 1 , wherein the beads collector further comprises at ...

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Номер записи: 17
04-02-2016 дата публикации

PROCESS FOR PREPARATION OF ZEOLITIC MATERIAL

Номер: US20160031714A1
Автор: Dumser Stefan, Luetzel Hans-Juergen, Mueller Ulrich, Parvulescu Andrei-Nicolae, Uhl Georg, Yang Jeff
Принадлежит: BASF SE

The present invention relates to a process for process for the preparation of a zeolitic material which process comprises (i) providing a boron-containing zeolitic material and (ii) deboronating the boron-containing zeolitic material by treating the boron-containing zeolitic material with a liquid solvent system thereby obtaining a deboronated zeolitic material, which liquid solvent system does not contain an inorganic or organic acid, or a salt thereof. 1. A process for the preparation of a zeolitic material , comprising:(i) providing a boron-containing zeolitic material of a structure MWW or BEA;(ii) deboronating the boron-containing zeolitic material with a liquid solvent system at a temperature in the range of from 50 to 125° C. thereby obtaining a deboronated zeolitic material of the structure MWW or BEA;wherein the liquid solvent system is water, andwherein said liquid solvent system does not contain an inorganic or organic acid or a salt thereof, the acid being selected from the group consisting of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, formic acid, acetic acid, propionic acid, oxalic acid, and tartaric acid.24-. (canceled)5. The process of claim 1 , wherein in (i) claim 1 , the boron-containing zeolitic material is provided by a process comprising(a) hydrothermally synthesizing the boron-containing zeolitic material from a synthesis mixture containing at least one silicon source, at least one boron source, and at least one template compound, to obtain the boron-containing zeolitic material in its mother liquor;(b) separating the boron-containing zeolitic material from its mother liquor;(c) drying the boron-containing zeolitic material separated according to (b);(d) calcining the boron-containing zeolitic material obtained from (b) or (c).6. (canceled)7. The process of claim 1 , wherein the boron-containing zeolitic material provided in (i) is an aluminum-free zeolitic material.8. The process of claim 1 , wherein the boron-containing ...

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Номер записи: 18
04-02-2021 дата публикации

MOISTURE AND HYDROGEN ADSORPTION GETTER AND METHOD OF FABRICATING THE SAME

Номер: US20210031167A1
Автор: CHOA YONGHO, EOM Nusia, LIM Hyoryoung
Принадлежит: Industry-University Cooperation Foundation Hanyang University ERICA Campus

A moisture and hydrogen adsorption getter is provided. The moisture and hydrogen adsorption getter includes a silicon substrate including a concave portion and a convex portion, a silicon oxide layer conformally provided along a surface of the concave portion and a surface of the convex portion and configured to adsorb moisture, and a hydrogen adsorption pattern disposed on the silicon oxide layer. A portion of the silicon oxide layer is exposed between portions of the hydrogen adsorption pattern. 1. A method of fabricating a moisture and hydrogen adsorption getter , the method comprising:preparing a silicon substrate including a concave portion and a convex portion;forming a silicon oxide layer for adsorbing moisture by immersing the silicon substrate in an acid solution; andforming a hydrogen adsorption pattern on the silicon oxide layer.2. The method of claim 1 , further comprising:forming a plurality of holes extending downward from surfaces of the concave portion and the convex portion before the forming of the silicon oxide layer.3. The method of claim 2 , wherein the forming of the holes comprises:forming a metal thin layer on the concave portion and the convex portion;thermally treating the metal thin layer formed on the concave portion and the convex portion to form metal particles; andforming the holes extending downward from the surfaces corresponding to the metal particles by a method of etching the silicon substrate including the concave portion and the convex portion by using the metal particles as a catalyst.4. The method of claim 1 , wherein the preparing of the silicon substrate comprises:forming a mask film that covers a first region of the silicon substrate and exposes a second region of the silicon substrate; andimmersing the silicon substrate in a basic solution to form the concave portion and the convex portion on the second region of the silicon substrate.5. The method of claim 1 , wherein the forming of the hydrogen adsorption pattern ...

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Номер записи: 19
30-01-2020 дата публикации

Addition-curable silicone composition

Номер: US20200032000A1
Автор: Keita KITAZAWA
Принадлежит: Shin Etsu Chemical Co Ltd

This addition-curable silicone composition contains (A) an organopolysiloxane having at least two unsaturated aliphatic hydrocarbon groups in each molecule, (B) an organohydrogenpolysiloxane in an amount that provides a value of 0.5-5 for the ratio of the number of SiH groups to the total number of unsaturated aliphatic hydrocarbon groups in the component (A), and (C) an effective amount of hydrosilylation catalyst microparticles that have a microcapsule structure containing a platinum-group metal catalyst-containing organic compound or polymer compound as a core material and a three-dimensional crosslinked polymer compound obtained by polymerizing at least one polyfunctional monomer as a wall material, the platinum-group metal catalyst-containing organic compound or polymer compound having a dynamic viscosity of 10-100,000 mm 2 /s at 25° C.

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Номер записи: 20
11-02-2016 дата публикации

Method for Manufacturing a Photocatalyst Based on Titanium Dioxide Containing Carbon or Metal

Номер: US20160038916A1
Автор: Friedrich Joerg, Meifert Raimund
Принадлежит:

A method for manufacturing a photocatalyst, based on titanium dioxide containing carbon or metal, in a pulsation reactor, where a raw material mixture, consisting of nanoparticulate titanium oxyhydrate and an aqueous solution or suspension, containing at least one organic, carbon-containing compound or metal ions, is fed into the pulsating hot-gas stream of the pulsation reactor and the titanium dioxide particles containing carbon or metal are formed. The hot-gas stream has a temperature of ≧450° C. following addition of the material and contains an excess of oxygen. In contrast to the known manufacturing methods, the method according to the invention allows reproducibly good product qualities to be achieved. 1. A method for manufacturing a particulate photocatalyst , based on titanium dioxide containing carbon or metal , in a pulsation reactor , comprising:feeding a raw material mixture, containing at least one organic, carbon-containing compound or metal ions, and nanoparticulate titanium oxyhydrate, into a pulsating hot-gas stream of a pulsation reactor,forming titanium dioxide particles containing carbon or metal;separating the formed titanium dioxide particles from the gas stream;wherein the raw material mixture is an aqueous solution or suspension;wherein the hot-gas stream contains an excess of oxygen; andwherein the temperature of the hot-gas stream following addition of the raw material mixture is at least about 450° C.2. The method according to wherein the carbon or the metal is at least partially intercalated in areas of the manufactured titanium dioxide particles close to the surface.3. The method of wherein the form of the titanium oxyhydrate that is added to the raw material mixture is selected from the group consisting of a powder or an aqueous suspension with a solids content of at least about 10% by weight.4. The method of wherein the form of the titanium oxyhydrate is an aqueous suspension having a solids content of from about 20 to about 40 ...

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Номер записи: 21
06-02-2020 дата публикации

OXIDATIVE DEHYDROGENATION CATALYSTS

Номер: US20200038847A1
Автор: Barnes Marie, de Wit Perry, Gao Xiaoliang, Kim Yoonhee, Simanzhenkov Vasily, Sullivan David
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula: 1. An oxidative dehydrogenation catalyst comprising a mixed metal oxide having the empirical formula:{'br': None, 'sub': 1.0', '0.12-0.49', '0.05-0.17', '0.10-0.20', 'd, 'MoVTeNbO'} d is a number to satisfy the valence of the oxide, and', 'the oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2θ degrees) at 22±0.2, 27±0.2, 28.0±0.2, and 28.3±0.1., 'wherein2. The oxidative dehydrogenation catalyst of claim 1 , wherein the catalyst is prepared by a process comprising wet ball milling a pretreated oxidative dehydrogenation catalyst having the empirical formula:{'br': None, 'sub': 1.0', '0.12-0.49', '0.05-0.17', '0.10-0.20', 'd, 'MoVTeNbO'}wherein d is a number to satisfy the valence of the oxide.3. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 27±0.2 to the peak at 22±0.2 is 0.55:1 to 0.65:1.4. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 27±0.2 to the peak at 22±0.2 is about 0.60:1.5. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is 0.50:1 to 0.80:1.6. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is 0.60:1 to 0.70:1.7. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is about 0.65:1.8. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.0±0.2 to the peak at 28.2±0.1 is 0.8:1 to 1.1:1.9. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.0±0.2 to the peak at 28.2±0.1 is 0.9:1 to 1:1.10. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.2±0.1 to the peak at 28.4 ...

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Номер записи: 22
07-02-2019 дата публикации

HIGH ASPECT RATIO LAYERED DOUBLE HYDROXIDE MATERIALS AND METHODS FOR PREPARATION THEREOF

Номер: US20190039988A1
Автор: Al-Shahrani Abdullah A., Alabedi Gasan Selman, Greenwell Hugh Christopher, Hall John Adrian, Veerabhadrappa Manohara Gudiyor, Whiting Andrew
Принадлежит:

Embodiments are directed to adamantane-intercalated layered double-hydroxide (LDH) particles and the methods of producing adamantane-intercalated LDH particles. The adamantane-intercalated LDH particles have a general formula defined by [MAl(OH)](A).mHO, where x is from 0.14 to 0.33, m is from 0.33 to 0.50, M is chosen from Mg, Ca, Co, Ni, Cu, or Zn, and A is adamantane carboxylate. The adamantane-intercalated LDH particles further have an aspect ratio greater than 100. The aspect ratio is defined by the width of an adamantane-intercalated LDH particle divided by the thickness of the adamantane-intercalated LDH particle. 1. An adamantane-intercalated layered double-hydroxide (LDH) material in a form of adamantane-intercalated LDH particles , where the adamantane-intercalated LDH particles comprise:{'sub': 1-x', 'x', '2', 'x', '2, 'a general formula defined by [MAl(OH)](A).mHO, where x is from 0.14 to 0.33, m is from 0.33 to 0.50, M is chosen from Mg, Ca, Co, Ni, Cu, or Zn, and A is adamantane carboxylate; and'}an aspect ratio greater than 100, the aspect ratio defined by a width of an adamantane-intercalated LDH particle divided by a thickness of the adamantane-intercalated LDH particle.2. The adamantane-intercalated LDH material of where M is Mg.3. The adamantane-intercalated LDH material of where the aspect ratio is greater than 125.4. The adamantane-intercalated LDH material of where the aspect ratio is greater than 150.5. The adamantane-intercalated LDH material of where the aspect ratio is greater than 200.6. The adamantane-intercalated LDH material of where the adamantane-intercalated LDH particles have a particle diameter of 5 to 10 μm.7. The adamantane-intercalated LDH material of where the adamantane-intercalated LDH particles have characteristic peaks in an IR spectra at 1517 cm claim 1 , 1395 cm claim 1 , 2901 cm claim 1 , 2847 cm claim 1 , and 4302 cm. This application is a divisional application of U.S. patent application Ser. No. 15/449,207 filed Mar. ...

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Номер записи: 23
16-02-2017 дата публикации

Ni-Pt-ZrO2 NANOCRYSTALLINE OXIDE CATALYST AND PROCESS THEREOF USEFUL FOR THE PRODUCTION OF SYNGAS BY COMBINING OXY- DRY REFORMING OF NATURAL GAS

Номер: US20170043324A1
Автор: Bal Rajaram, Bordoloi Ankur, Goyal Reena, Konathala Laxmi Narayan Sivakumar, Pendem Chandrashekar, Sarkar Bipul
Принадлежит:

The present invention provides a process and catalyst for the autothermal and dry reforming of methane to produce syngas. The process provides a direct single step gas phase reforming of methane or natural gas to syngas over Ni—Pt supported nanocrystalline ZrO. The process provides methane conversion of 54-99% with H/CO ratio of 1.14 to 1.42 (mol %) in the temperature range of 250 to 750 800° C. at atmospheric pressure. 1. Ni—Pt—ZrOnanocrystalline oxide catalyst , wherein Ni is in the range of 2-10 wt % , Pt is in the range of 0.5 to 4 wt % and ZrOin the range of 97.5 to 86 wt % having particle size in the range of 30-80 nm.2. Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , wherein said catalyst is useful for partial oxidation and dry reforming of methane for the production of syngas via gas phase reforming of methane or natural gas.3. Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , having following characteristics:{'sup': '2', 'BET surface area: 85 m/g;'}particle size of the catalyst ranges between 30-60 nm;Catalyst runs for 100 hrs without deactivation.4. A process for the preparation of Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , wherein the said process comprising the steps of:{'sub': 2', '2', '2', '4, 'i. dissolving 0.025 to 0.0372 mol of ZrOClin 2.78 to 5.56 mol of water, wherein the mole ratio of ZrOCl:HO ranges between 180 400 in the solution with the pH in the range of 3-10 using NHOH solution;'}transferring the mixture of step i) to a stainless steel autoclave and heating at a temperature in the range of 50 to 70° C. for a period in the range of 1 to 2 hrs to obtain white precipitate;filtering, washing and drying the white precipitate as obtained in step ii) at a temperature in the range of 100 to 130° C. for period in the range of 10 to 18 hrs;{'sub': '2', 'iv. calcining the materials as obtained in step iii) at a temperature in the range of 300 to 800° C. for period in the range of 4 to 6 hrs in air to ...

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Номер записи: 24
15-02-2018 дата публикации

METHOD FOR PRODUCING NOX STORAGE-REDUCTION CATALYST

Номер: US20180043306A1
Автор: KAWAMURA Shohei, Sakano Mitsuru
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An object of the present disclosure is to provide a method for producing a NOx storage-reduction catalyst capable of inhibiting decreases in NOx purification performance following exposure to high temperatures. The present disclosure achieves the aforementioned object with a method for producing a NOx storage-reduction catalyst, comprising: (A) supporting potassium compound particles on catalyst support particles by using an potassium dispersed water containing the potassium compound particles, and (B) calcining the catalyst support particles supporting the potassium compound particles; wherein, the potassium compound particles are at least one type selected from the group consisting of oteracil potassium, potassium tetranitroacridone, potassium tetraphenylborate, and potassium tetranitrophenothiazine-9-oxide. 1. A method for producing a NOx storage-reduction catalyst , comprising:(A) supporting potassium compound particles on catalyst support particles by using an potassium dispersed water containing the potassium compound particles, and(B) calcining the catalyst support particles supporting the potassium compound particles;wherein the potassium compound particles are at least one type selected from the group consisting of oteracil potassium, potassium tetranitroacridone, potassium tetraphenylborate, and potassium tetranitrophenothiazine-9-oxide.2. The method according to claim 1 , comprising supporting a catalytic metal on the catalyst support particles before the step (A) claim 1 , between the step (A) and the step (B) claim 1 , or after the step (B).3. The method according to claim 2 , further comprising:supporting the catalytic metal on the catalyst support particles before the step (A), andpreparing a slurry by mixing the potassium dispersed water with the catalyst support particles having the catalytic metal supported thereon, to support the potassium compound particles on the catalyst support particles in the step (A).4. The method according to claim 1 , ...

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Номер записи: 25
13-02-2020 дата публикации

CATALYST, METHOD FOR PRODUCING CATALYST, AND METHOD FOR PRODUCING ACRYLONITRILE

Номер: US20200047163A1
Автор: FUKUZAWA Akiyoshi, Iitsuka Chihiro
Принадлежит: ASAHI KASEI KABUSHIKI KAISHA

The present invention provides a catalyst including Mo, Bi, and Fe, wherein P/R is 0.10 or less, wherein P is a peak intensity at 2θ=22.9±0.2° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis. 1. A catalyst comprising Mo , Bi , and Fe , wherein:P/R is 0.10 or less, wherein P is a peak intensity at 2θ=22.9±0.2° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis.2. The catalyst according to claim 1 , comprising Mo claim 1 , Bi claim 1 , and Fe claim 1 , wherein:Q/R is 0.06 or more, wherein Q is a peak intensity at 2θ=28.0±0.1° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis.3. The catalyst according to claim 1 , wherein the catalyst is represented by formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein, X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, barium, and tungsten;Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, boron, gallium, and indium;Z represents at least one element selected from the group consisting of sodium, potassium, rubidium, and cesium;a, b, c, d, and e satisfy 0.1≤a≤2.0, 0.1≤b≤4.0, 0.1≤c≤10.0, 0.1≤d≤3.0, and 0.01≤e≤2.0, respectively; andf represents a number of oxygen atom needed to satisfy an atomic valence requirement of element existing other than oxygen.4. The catalyst according to claim 3 , wherein a satisfies 0.1≤a≤0.7.5. The catalyst according to claim 1 , wherein the catalyst further comprises silica.6. A method for producing the catalyst according to claim 1 , comprising:a step of spray-drying a slurry comprising Mo, Bi, and Fe to obtain a dried particle; anda step of calcining the dried particle in air and further treating in the presence of a gas that comprises oxygen and ammonia and has 0.1 to 9% by volume of water content.7. A method for ...

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Номер записи: 26
28-02-2019 дата публикации

MOISTURE AND HYDROGEN-ABSORBING GETTER AND METHOD FOR MANUFACTURING SAME

Номер: US20190060863A1
Автор: CHOA YONGHO, EOM Nusia, LIM Hyoryoung
Принадлежит: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

A moisture and hydrogen adsorption getter is provided. The moisture and hydrogen adsorption getter includes a silicon substrate including a concave portion and a convex portion, a silicon oxide layer conformally provided along a surface of the concave portion and a surface of the convex portion and configured to adsorb moisture, and a hydrogen adsorption pattern disposed on the silicon oxide layer. A portion of the silicon oxide layer is exposed between portions of the hydrogen adsorption pattern. 1. A moisture and hydrogen adsorption getter comprising:a silicon substrate including a concave portion and a convex portion;a silicon oxide layer conformally provided along a surface of the concave portion and a surface of the convex portion and configured to adsorb moisture; anda hydrogen adsorption pattern disposed on the silicon oxide layer,wherein a portion of the silicon oxide layer is exposed between portions of the hydrogen adsorption pattern.2. The moisture and hydrogen adsorption getter of claim 1 , wherein the silicon substrate further includes a plurality of holes extending downward from the surfaces of the concave portion and the convex portion.3. The moisture and hydrogen adsorption getter of claim 2 , wherein the silicon oxide layer is conformally provided along inner surfaces of the holes.4. The moisture and hydrogen adsorption getter of claim 2 , further comprising:a plurality of metal particles provided in the plurality of holes, respectively.5. The moisture and hydrogen adsorption getter of claim 4 , wherein the metal particles provided in the holes includes at least one of Pt claim 4 , Ag claim 4 , or Pd.6. The moisture and hydrogen adsorption getter of claim 1 , further comprising:passivation metal catalyst particles provided on the hydrogen adsorption pattern.7. The moisture and hydrogen adsorption getter of claim 6 , wherein the passivation metal catalyst particles include at least one of Ag claim 6 , Pd claim 6 , or Pt.8. The moisture and hydrogen ...

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Номер записи: 27
15-03-2018 дата публикации

HOLLOW NANOPARTICLES WITH HYBRID DOUBLE LAYERS

Номер: US20180071225A1
Автор: JOHN Vijay, McPherson Gary
Принадлежит: The Administrators of the Tulane Educational Fund

The present invention discloses the morphology of hollow, double-shelled submicrometer particles generated through a rapid aerosol-based process. The inner shell is an essentially hydrophobic carbon layer of nanoscale dimension (5-20 nm), and the outer shell is a hydrophilic silica layer of approximately 5-40 nm, with the shell thickness being a function of the particle size. The particles are synthesized by exploiting concepts of salt bridging to lock in a surfactant (CTAB) and carbon precursors together with iron species in the interior of a droplet. This deliberate negation of surfactant templating allows a silica shell to form extremely rapidly, sealing in the organic species in the particle interior. Subsequent pyrolysis results in a buildup of internal pressure, forcing carbonaceous species against the silica wall to form an inner shell of carbon. The incorporation of magnetic iron oxide into the shells opens up applications in external stimuli-responsive nanomaterials. 1182-. (canceled)183. A method of forming a plurality of particles , each particle having a hollow core , a layer surrounding the hollow core , wherein the layer comprises a species derived from an organic precursor from the group consisting of monosaccharides and polysaccharides , a shell surrounding the layer , wherein the shell comprises a ceramic , and a plurality of metal oxide nanoparticles located within the shell or between the shell and layer , comprising the steps of:a) providing a solution comprising a ceramic precursor, an organic precursor from the group consisting of monosaccharides and polysaccharides, a metal salt, and a templating surfactant;b) atomizing the solution into aerosol droplets;c) heating the aerosol droplets to form a plurality of particles, each particle having a shell comprising a ceramic derived from the ceramic precursor and a core containing the organic precursor, metal salt, and templating surfactant; andd) conducting pyrolysis of the plurality of particles, ...

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Номер записи: 28
15-03-2018 дата публикации

Zsm-5 catalyst

Номер: US20180071723A1
Автор: Brendan Patrick Dowd, Christopher R. Castellano, Xingtao Gao
Принадлежит: BASF Corp

Disclosed in certain embodiments are ZSM-5 zeolite microspheres. Disclosed in certain embodiments is a method of forming ZSM-5 zeolite microspheres including: 1) shaping a mixture into microspheres where the mixture includes a silica material and of particulates selected from at least one high-density material with an absolute bulk density of at least 0.3 g/cc, ZSM-5 zeolite crystals, and combinations thereof; 2) calcining the microspheres; and 3) reacting and subsequently heating the microspheres with at least one alkali solution to form ZSM-5 zeolite in-situ on the microspheres, where the ZSM-5 zeolite microspheres contain substantially no clay or calcined clay material.

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Номер записи: 29
12-03-2020 дата публикации

HIGHLY HOMOGENOUS ZEOLITE PRECURSORS

Номер: US20200079655A1
Автор: Batllo Francois, John Shiby, Lin Wenyong, Salomon George, Tataurova Yulia
Принадлежит:

The invention provides methods and compositions for precursors and for the synthesis of zeolites. The invention makes use of intimately homogeneous precursors which avoid the formation of a difficult to work with gel stage in zeolite formation. This allows for the synthesis of zeolite in a much shorter period of time and with much lower amounts of structure directing agents. 1. A composition of matter comprising an SDA and a modified colloidal silica sol comprising species of aluminum , the modified colloidal silica sol including tetrahedral and octahedral aluminum species.2. The composition of matter of claim 1 , wherein the SDA is an adamantylammonium hydroxide.3. The composition of matter of claim 1 , wherein the SDA is a bromide claim 1 , chloride claim 1 , or hydroxide of an ammonium salt wherein the ammonium group is selected from tetramethylammonium claim 1 , tetrapropylammonium claim 1 , tetraethylammonium claim 1 , tetrabutylammonium claim 1 , tetrahexylammonium claim 1 , tetraoctylammonium claim 1 , tributylmethylammonium claim 1 , triethylmethylammonium claim 1 , trimethylphenylammonium claim 1 , methyltripropylammonium claim 1 , dodecyltrimethylammonium claim 1 , hexadecyltrimethylammonium claim 1 , dimethyldodecylethylammonium claim 1 , diethyldimethylammonium claim 1 , or a combination thereof.4. A composition of matter comprising an SDA and a modified colloidal silica sol comprising species of aluminum claim 1 , the modified colloidal silica sol including tetrahedral and octahedral aluminum species in a molar ratio of about 1:1.5. The composition of matter of claim 4 , wherein the SDA is an adamantylammonium hydroxide.6. The composition of matter of claim 4 , wherein the SDA is a bromide claim 4 , chloride claim 4 , or hydroxide of an ammonium salt wherein the ammonium group is selected from tetramethylammonium claim 4 , tetrapropylammonium claim 4 , tetraethylammonium claim 4 , tetrabutylammonium claim 4 , tetrahexylammonium claim 4 , ...

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Номер записи: 30
02-04-2015 дата публикации

GENERATING CATALYSTS FOR FORMING CARBON ALLOTROPES

Номер: US20150093323A1
Автор: JR. Russell J., Koveal, Noyes Dallas B., Ring Terry A.
Принадлежит:

A system and methods for forming carbon allotropes are described. The system includes a reactor configured to use a catalyst to form a carbon allotrope from a feed stock in a Bosch reaction. The catalyst includes a roughened metal surface. 1. A system for the production of a carbon allotrope , comprisinga reactor configured to use a catalyst to form the carbon allotrope from a feed stock in a Bosch reaction; andthe catalyst, wherein the catalyst comprises a roughened metal surface.2. The system of claim 1 , wherein the feed stock comprises at least about 10 mol % oxygen.3. The system of claim 1 , wherein the catalyst comprises comminuted metal fragments.4. The system of claim 1 , wherein the catalyst comprises metal shot-blasting beads.5. The system of claim 1 , wherein the catalyst comprises particles between about 25 μm and 600 μm in size.6. The system of claim 1 , wherein the catalyst comprises particles between about 250 and 589 micrometers.7. The system of claim 1 , wherein the catalyst comprises iron.8. The system of claim 7 , wherein the catalyst comprises nickel claim 7 , chromium claim 7 , or any combinations thereof.9. The system of claim 1 , wherein the catalyst comprises metal shavings.10. The system of claim 1 , wherein the catalyst comprises metal fibers.11. The system of claim 1 , wherein the catalyst comprises metal particles.12. The system of claim 1 , wherein the catalyst comprises hematite claim 1 , magnetite claim 1 , or Wüstite claim 1 , or any combinations thereof.13. The system of claim 1 , wherein the catalyst comprises iron carbide.14. The system of claim 1 , wherein the catalyst comprises a mixture of active metal particles and inactive particles.15. The system of claim 14 , wherein the inactive particles slow the formation rate for the carbon allotrope.16. The system of claim 14 , wherein the inactive particles comprise alumina claim 14 , cerium oxides claim 14 , titania claim 14 , zirconia claim 14 , or CrO claim 14 , or any combinations ...

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Номер записи: 31
19-03-2020 дата публикации

CATALYST COMPOSITION FOR ENHANCING YIELD OF OLEFINS IN FLUID CATALYTIC CRACKING PROCESS (FCC)

Номер: US20200086304A1
Автор: CHIDAMBARAM Velusamy, Karthikeyani Arumugam Velayutham, Kuvettu Mohan Prabhu, LOGANATHAN Kumaresan, MAZUMDAR Sanjiv Kumar, PULIKOTTIL Alex Cheru, RAMAKUMAR Sankara Sri Venkata
Принадлежит: INDIAN OIL CORPORATION LIMITED

The present invention provides a catalyst composition comprising rare earth exchanged USY zeolite (REUSY); pentasil zeolite; phosphorous compound; clay, silica, alumina, and spinel to enhance the catalytic activity and selectivity for light olefins in FCC operation conditions. The present invention also provides a process for the preparation of Light olefin enhancing catalyst composition with high propylene yield and coke selectivity. 1. A composite catalyst composition , comprising:about 10-25 wt % rare earth exchanged USY zeolite (REUSY);about 5-20 wt % stabilized pentasil zeolite;about 2-8 wt % phosphorous compound;about 20-45 wt % clay;about 5-25 wt % silica;about 10-35 wt % alumina; andabout 0.5 to 3 wt % mixed metal oxide selected from a group consisting of at least one of Group XI and XIII metals, and the wt % being based on total weight of the catalyst composition.2. The composition as claimed in claim 1 , wherein the mixed metal oxide is a spinel.3. The composition as claimed in claim 1 , wherein the mixed metal oxide comprises of oxides of metals selected from at least one of copper claim 1 , nickel claim 1 , zinc claim 1 , aluminium claim 1 , and mixtures thereof.4. The composition as claimed in claim 1 , wherein the pentasil zeolite is selected from a group consisting of ZSM-5 claim 1 , ZSM-11 claim 1 , mordenite claim 1 , and beta.5. The composition as claimed in claim 1 , wherein the REUSY comprises of 0.1 to 5 wt % of rare earth oxide.6. The composition as claimed in claim 1 , wherein the phosphorous compound is sourced from a group consisting of at least one of mono-ammonium phosphate claim 1 , di-ammonium phosphate claim 1 , and phosphoric acid.7. The composition as claimed in claim 1 , wherein the clay is selected from a group consisting of at least one of bentonite claim 1 , attapulgite claim 1 , and kaolinite.8. The composition as claimed in claim 1 , wherein the silica is selected from at least one of sodium and ammonium stabilized colloidal ...

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Номер записи: 32
05-04-2018 дата публикации

CATALYSTS FOR DEGRADATION OF ORGANIC POLLUTANTS IN PRINTING AND DYEING WASTEWATER AND METHOD OF PREPARATION THEREOF

Номер: US20180093260A1
Автор: HU Enling, SHANG Songmin, TAO Xiao-ming
Принадлежит:

This invention discloses a method for preparing a catalyst for catalyzing the degradation of organic pollutants in printing and dyeing wastewater by ozone, wherein the catalyst comprises a porous carbon material as a substrate and metal oxide nanoparticles deposited on the surface of the substrate. The method comprises the steps of: allowing a mixture of resorcinol, formaldehyde, trimethylhexadecyl ammonium bromide, multi-walled carbon nanotubes and deionized water to react to form cured product, which is then calcinated and carbonized at high temperature to produce the porous carbon material; impregnating the resulting porous carbon material with nitrate solution, drying the porous carbon material, and calcinating it at high temperature, wherein the absorbed nitrate is decomposed into metal oxide and embedded into the porous carbon material. Depending on the requirement of applications, the raw material for preparation of the catalyst of the present invention can be pulverized to screen out the appropriate particle size to fit into practical engineering applications. With the optimization of catalytic oxidation process, the catalyst can be used to promote the rapid degradation of organic matter in printing and dyeing wastewater by ozonation, and the percentage of degradation can be greatly improved. As a result, indicators of wastewater, including the chromaticity and COD, can be significantly reduced. 17-. (canceled)8. A method for preparing a catalyst for catalyzing the degradation of organic pollutants in printing and dyeing wastewater , wherein the method comprises:Step S1: allowing a mixture of resorcinol, formaldehyde solution, trimethylhexadecyl ammonium bromide, multi-walled carbon nanotubes and deionized water to react to form a cured product, which is then calcinated and carbonized to produce a porous carbon material;Step S2: impregnating the porous carbon material with a nitrate solution wherein nitrate salt is absorbed on said porous carbon material, ...

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Номер записи: 33
19-04-2018 дата публикации

PHOTOCATALYTIC FILTER

Номер: US20180104678A1
Автор: Mirhoseini Farid, Salabat Alireza
Принадлежит:

Disclosed herein is a photocatalytic filter, which includes a plurality of cross-linked polymethyl methacrylate (PMMA)/ionic liquid (IL)/TiOnanocomposite pellets, and a photocatalytic vessel. The plurality of cross-linked PMMA/IL/TiOnanocomposite pellets is placed within the photocatalytic vessel. Each cross-linked PMMA/IL/TiOnanocomposite pellet includes a PMMA polymeric matrix, and a plurality of IL/TiOcore-shell microspheres dispersed within the PMMA polymeric matrix. Moreover, each IL/TiOcore-shell microsphere includes a core of IL and a shell of TiOnanoparticles. 1. A photocatalytic filter , comprising:{'sub': 2', '2, 'claim-text': a PMMA polymeric matrix; and', {'sub': 2', '2', '2, 'a plurality of IL/TiOcore-shell microspheres dispersed within the PMMA polymeric matrix, each IL/TiOcore-shell microsphere comprising a core of IL and a shell of TiOnanoparticles; and'}], 'a plurality of cross-linked polymethyl methacrylate (PMMA)/ionic liquid (IL)/TiOnanocomposite pellets, each cross-linked PMMA/IL/TiOnanocomposite pellet comprisinga photocatalytic vessel,{'sub': '2', 'wherein the plurality of cross-linked PMMA/IL/TiOnanocomposite pellets is placed within the photocatalytic vessel.'}2. The photocatalytic filter according to claim 1 , wherein the cross-linked PMMA/IL/TiOnanocomposite pellets has a porosity between 50% and 70%.3. The photocatalytic filter according to claim 1 , wherein the photocatalytic filter is a visible-light-responsive filter.4. The photocatalytic filter according to claim 1 , wherein the photocatalytic vessel is made up of non-cross-linked PMMA/IL/TiOnanocomposite.5. The photocatalytic filter according to claim 1 , wherein the TiOis present in the cross-linked PMMA/IL/TiOnanocomposite pellets with a concentration of less than 0.05% of the weight of the cross-linked PMMA/IL/TiOnanocomposite pellets.6. The photocatalytic filter according to claim 5 , wherein the IL comprises 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM] [BF]).7. The ...

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Номер записи: 34
20-04-2017 дата публикации

Oxygen Generating Compositions Comprising (Fe,Mg)O

Номер: US20170107105A1
Автор: HEJCZYK Artur, KALLFASS Christoph, SIMON Ulla
Принадлежит:

The present disclosure provides an oxygen-generating composition comprising an oxygen source and a mixed-metal oxide of formula: (Fe,Mg)O. 1. An oxygen-generating composition comprising: an oxygen source and;a mixed-metal oxide of formula: (Fe,Mg)O.2. The composition as claimed in claim 1 , wherein less than 25% of the mixed-metal oxide is crystalline.3. The composition as claimed in claim 1 , wherein less than 10% of the mixed-metal oxide is crystalline.4. The composition as claimed in claim 1 , wherein said mixed-metal oxide comprises 2 to 8 at. % Fe.5. The composition as claimed in claim 1 , wherein said mixed-metal oxide is in the form of nano-particles.6. The composition as claimed in claim 5 , wherein said nano-particles have a diameter of less than or equal to 500 nm.7. The composition as claimed in claim 1 , wherein said oxygen source is selected from alkali metal chlorates claim 1 , alkali metal perchlorates claim 1 , alkaline earth metal chlorates claim 1 , alkaline earth metal perchlorates and mixtures thereof.8. The composition as claimed in claim 1 , wherein said oxygen source comprises sodium chlorate and/or lithium perchlorate.9. The composition as claimed in claim 1 , wherein said composition consists essentially of said oxygen source and said mixed-metal oxide.10. The composition as claimed in claim 1 , wherein 90 to 99.9 wt. % of said composition is said oxygen source.11. The composition as claimed in claim 1 , wherein 0.1 to 10 wt. % of said composition is said mixed-metal oxide.12. A method for generating oxygen claim 1 , said method comprising decomposing an oxygen source as described in in the presence of a mixed-metal oxide.13. A chemical oxygen-generator comprising an oxygen-generating composition as claimed in .14. The chemical oxygen-generator as claimed in claim 13 , wherein said generator comprises a container for containing the oxygen-generating composition and a primer for starting decomposition of the oxygen-generating composition.15. ...

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Номер записи: 35
29-04-2021 дата публикации

POROUS CATALYST CARRIER PARTICLES AND METHODS OF FORMING THEREOF

Номер: US20210121865A1
Автор: Dahar Stephen L., McCarthy James A., Shi Jingyu
Принадлежит: SAINT-GOBAIN CERAMICS & PLASTICS, INC.

A method of forming a batch of porous catalytic carrier particles may include applying a precursor mixture into a shaping assembly within an application zone to form a batch of precursor porous catalytic carrier particles, drying the batch of precursor porous catalytic carrier particles within the shaping assembly to form the batch of porous catalytic carrier particles, and directing an ejection material at the shaping assembly under a predetermined force to remove the batch of porous catalytic carrier particles from the shaping assembly. The batch of porous catalytic carrier particles may have an average pore volume of at least about 0.1 cm/g. 1. A method of forming a batch of porous catalytic carrier particles , wherein the method comprises:applying a precursor mixture into a shaping assembly within an application zone to form a batch of precursor porous catalytic carrier particles;drying the batch of precursor porous catalytic carrier particles within the shaping assembly to form the batch of greenware porous catalytic carrier particles;directing an ejection material at the shaping assembly under a predetermined force to remove the batch of greenware porous catalytic carrier particles from the shaping assembly, andfiring the batch of greenware porous catalytic carrier particles to for the batch of porous catalytic carrier particles,{'sup': '3', 'wherein the batch of porous catalytic carrier particles comprises an average pore volume of at least about 0.1 cm/g.'}2. The method of claim 1 , wherein applying the precursor mixture into a shaping assembly comprises extruding the precursor mixture through a die opening and into the shaping assembly claim 1 , wherein the shaping assembly comprises an opening configured to receive the precursor mixture claim 1 , wherein the opening is defined by at least three surfaces claim 1 , wherein the opening extends through an entire thickness of a first portion of the shaping assembly claim 1 , wherein the opening extends through ...

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Номер записи: 36
02-04-2020 дата публикации

DELAYED CURE MICRO-ENCAPSULATED CATALYSTS

Номер: US20200101451A1
Автор: Anderson Lawrence G., Hartman Madeline
Принадлежит:

Controlled release polyurea microcapsules can be prepared from a combination of polyisocyanates using emulsion polymerization. Encapsulated catalysts prepared using the polyurea microcapsules can be used to control the cure rate of coatings and sealants. 1. A microcapsule comprising a polyurea shell at least partially encapsulating a core , wherein the polyurea shell comprises a reaction product of reactants comprising:a combination of polyisocyanates, wherein the combination of polyisocyanates comprises an alicyclic diisocyanate and an acyclic diisocyanate; anda crosslinker, wherein the crosslinker comprises a polyamine2. The microcapsule of claim 1 , wherein the alicyclic diisocyanate comprises isophorone diisocyanate.3. The microcapsule of claim 1 , wherein the acyclic diisocyanate comprises hexamethylene diisocyanate.4. The microcapsule of claim 1 , wherein the combination of polyisocyanates comprises an alicyclic diisocyanate trimer claim 1 , an acyclic diisocyanate trimer claim 1 , or a combination thereof.5. The microcapsule of claim 4 , wherein the alicyclic diisocyanate trimer comprises an isophorone diisocyanate trimer and/or the acyclic diisocyanate trimer comprises hexamethylene diisocyanate trimer.6. The microcapsule of claim 1 , wherein the combination of polyisocyanates comprises isophorone diisocyanate and hexamethylene diisocyanate.7. The microcapsule of claim 1 , wherein an equivalents ratio of the alicyclic diisocyanate to the acyclic diisocyanate is from 10:90 to 90:10.8. The microcapsule of claim 1 , wherein the polyamine comprises diethylenetriamine9. The microcapsule of claim 1 , wherein the polyurea shell further comprises a silica nanopowder claim 1 , calcium carbonate claim 1 , or a combination thereof; and a weight stabilizer.10. The microcapsule of claim 1 , wherein the core comprises a catalyst.11. The microcapsule of claim 10 , wherein the core further comprises a plasticizer.12. A composition comprising the microcapsule of .13. An ...

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Номер записи: 37
30-04-2015 дата публикации

NOVEL OXIDE MATERIALS AND SYNTHESIS BY FLUORIDE/CHLORIDE ANION PROMOTED EXFOLIATION

Номер: US20150118148A1
Автор: Katz Alexander, Ogino Isao, Zones Stacey Ian
Принадлежит:

The present invention is directed to the synthesis of novel delaminated layered zeolite precursor materials prepared by fluoride/chloride anion-promoted exfoliation. The method comprises, for example, using a combination of fluoride and chloride anions at a mild pH in a non-aqueous solution to affect delamination of a layered zeolite precursor, generally comprising an organic solvent. The method may be used in conjunction with either acidification or sonication, or both. The resulting delaminated zeolite precursors are then isolated. Precursors that are then isolated lack amorphous silica content. The UCB-1 product is an example of such a novel oxide material and is obtained in yields in excess of 90% without the need for sonication. 1. A method of preparing an exfoliated layered zeolite precursor material comprising preparing a non-aqueous mixture of chloride and fluoride anions comprising an organic solvent and a layered oxide material to be delaminated , maintaining the mixture at a temperature in the range of 50-150° C. for a length of time sufficient to effect the desired delamination; and then recovering the delaminated oxide material.2. The method of claim 1 , wherein the organic solvent comprises DMF.3. The method of claim 1 , wherein the mixture claim 1 , after heating claim 1 , is subjected to sonication claim 1 , after which the delaminated oxide material is recovered.4. The method of claim 1 , wherein the layered oxide material to be delaminated is selected from the group consisting of SSZ-25 claim 1 , ERB-1 claim 1 , PREFER claim 1 , SSZ-70 claim 1 , Nu-6(1) claim 1 , Al-SSZ-70 and B-SSZ-70.5. The method of claim 1 , wherein the layered oxide material to be delaminated is PREFER claim 1 , Al-SSZ-70 and B-SSZ-706. The method of claim 1 , wherein the mixture is subjected to sonication prior to recovering the delaminated oxide material.7. The method of claim 1 , wherein the non-aqueous mixture of chloride and fluoride anions comprises a mixture of an ...

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Номер записи: 38
09-06-2022 дата публикации

PROCESS FOR PRODUCING COMPOSITE MATERIAL

Номер: US20220176348A1
Автор: Burrow Samuel, Hewitt Alexander
Принадлежит:

A process is disclosed comprising, providing a source of graphene, providing a particulate material, dispersing a mixture of the source of graphene and the particulate material in a first dispersion fluid to form a dispersion mixture, and providing a source of a base in the first dispersion fluid, thereby causing the source of graphene and particulate material in the dispersion mixture to interact forming a composite. The particulate material is preferably titanium dioxide comprising anatase and/or rutile which provides an effective photocatalytic composite. Also disclosed is apparatus to remove pollutants from fluids using the photocatalytically active material. 2. The process of claim 1 , wherein the process comprisesa) providing a first dispersion fluid comprising graphene or partially oxidised graphene,b) providing a particulate material,c) dispersing the particulate material in the first dispersion fluid comprising graphene or partially oxidised graphene, to form a dispersion mixture, andd) providing a base in the dispersion mixture,thereby causing the graphene and particulate material in the dispersion mixture to interact forming a composite.3. The process according to claim 1 , the process comprisinga) providing graphite flakes or partially oxidised graphite flakes,b) dispersing the graphite flakes or partially oxidised graphite flakes in a first dispersion fluid,c) exfoliating the graphite flakes or partially oxidised graphite flakes in the first dispersion fluid to provide a first dispersion fluid comprising graphene or partially oxidised graphene;d) providing a particulate material,e) dispersing the particulate material in the dispersion comprising graphene or partially oxidised graphene to form a dispersion mixture, andf) providing a base in the dispersion mixture,thereby causing the graphene or partially oxidised graphene and particulate material in the dispersion mixture to interact forming a composite.4. The process of claim 1 , wherein the process ...

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Номер записи: 39
09-06-2022 дата публикации

Supported Nanoparticle Compositions and Precursors, Processes for Making the Same and Syngas Conversion Processes

Номер: US20220176365A1
Автор: Bunquin Jeffrey C., Guzman Javier, Keusenkothen Paul F., Pena Jennifer R., Willis Joshua J.
Принадлежит:

Disclosed are novel supported nanoparticle compositions, precursors, processes for making supported nanoparticle compositions, processes for making catalyst compositions, and processes for converting syngas. The catalyst composition can comprise nanoparticles comprising metal oxide(s), such as manganese cobalt oxide. This disclosure is particularly useful for converting syngas via the Fischer-Tropsch reactions to make olefins and/or alcohols. 1. A supported nanoparticle composition comprising:a support; anda plurality of nanoparticles on the support, wherein:each nanoparticle comprises a kernel, the kernels have an average particle size from 4 to 100 nm and a particle size distribution of no greater than 20%; the kernels comprise oxygen, a metal element M1, optionally sulfur, optionally phosphorus, an optional metal element M2, and optionally a third metal element M3, where:M1 is selected from Mn, Fe, Co, and combination of two or more thereof;M2 is selected from Ni, Zn, Cu, Mo, W, Ag, and combinations thereof;M3 is selected from Y, Sc, alkaline metals, the lanthanides, group 13, 14, or 15 elements, and combinations thereof; andthe molar ratios of M2, M3, S, and P, if any, to M1 is r1, r2, r3, and r4, respectively, 0≤r1≤2, 0≤r2≤2, 0≤r3≤5, and 0≤r4≤5.2. The supported nanoparticle composition of claim 1 , wherein 0.05≤r1≤0.5 claim 1 , and 0.005≤r2≤0.5.3. The supported nanoparticle composition of claim 1 , wherein the kernels comprise an oxide of at least one metal element from the M1 claim 1 , the M2 claim 1 , or the M3.4. The supported nanoparticle composition of claim 1 , wherein the nanoparticles have an average particle size of from 4 to 20 nm.5. The supported nanoparticle composition of claim 1 , wherein the nanoparticles have a particle size distribution of from 5 to 15%.6. The supported nanoparticle composition of claim 1 , wherein the kernels comprise at least two metal elements.7. The supported nanoparticle composition of claim 1 , wherein the nanoparticles ...

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Номер записи: 40
27-04-2017 дата публикации

PREPARATION METHOD OF PARTICLE SIZE-CONTROLLED, CHROMIUM OXIDE PARTICLES OR COMPOSITE PARTICLES OF IRON OXIDE-CHROMIUM ALLOY AND CHROMIUM OXIDE

Номер: US20170113207A1
Автор: Jung Heon, KANG Shin Wook, Lim Tak Hyoung, Park Ji Chan, Yang Jung Il
Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

Provided are particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide; a preparation method thereof; and use thereof, in which the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide having a desired particle size are prepared in a simpler and more efficient manner by using porous carbon material particles having a large pore volume as a sacrificial template. When the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide thus obtained are applied to gas-phase and liquid-phase catalytic reactions, they are advantageous in terms of diffusion of reactants due to particle uniformity, high-temperature stability may be obtained, and excellent reaction results may be obtained under severe reaction environment. 1. A method of preparing particle size-controlled chromium oxide particles , the method comprising:{'sup': '3', 'Step 1a of preparing porous carbon material particles having a pore volume of 0.3 cm/g or more;'}Step 2a of mixing a chromium hydrate salt and the porous carbon material particles;Step 3a of melt-infiltrating the chromium hydrate salt into pores of the porous carbon material particles at a temperature, at which the chromium hydrate salt is melted; andStep 4a of calcining the chromium hydrate salt and the porous carbon material at a high temperature of 700 to 900° C. to form chromium oxide particles, of which particle size is controlled by the pores of the porous carbon material, and also removing the porous carbon material by pyrolysis to remain particle size-controlled chromium oxide particles.2. The method of claim 1 , wherein coefficient of variation (CV) of the particle size of the chromium oxide particles is 0.3 or less.3. The method of claim 1 , wherein an average pore size of the porous carbon material particle in Step 1a is 2 nm to 50 nm.4. The method of claim 1 , wherein an average particle ...

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Номер записи: 41
27-04-2017 дата публикации

CATALYST PARTICLE AND METHOD FOR PRODUCING THEREOF

Номер: US20170113213A1
Автор: Anisimov Anton Sergeevich, BROWN David P., NASIBULIN Albert G., Reynaud Olivier
Принадлежит:

A method for producing catalyst particles is disclosed and includes forming a solution including a solvent and a material including catalyst material, wherein the material including catalyst material is dissolved or emulsified in the solvent; aerosolizing the formed solution to produce droplets including the material including catalyst material; and treating the droplets to produce catalyst particles or intermediate catalyst particles from the material including catalyst material comprised in the droplets. A method for producing nanomaterials, an apparatus, a catalyst particle and a solution droplet for the production of a catalyst particle are also disclosed. 1. A method for producing catalyst particles , characterized in that the method comprises:forming a solution comprising a solvent and a material including catalyst material, wherein the material including catalyst material is dissolved or emulsified in the solvent,aerosolizing the formed solution to produce droplets comprising the material including catalyst material, andtreating the droplets to produce catalyst particles or intermediate catalyst particles from the material including catalyst material comprised in the droplets.2. The method of claim 1 , wherein intermediate catalyst particles are produced claim 1 , the method further comprising: treating the intermediate catalyst particles to produce catalyst particles.3. The method of any one of and claim 1 , wherein the formed solution has a viscosity between 0.0001 Pascal Seconds and 10 Pascal Seconds claim 1 , preferably between 0.0001 Pascal Seconds and 1 Pascal Seconds.4. The method of any one of to claim 1 , wherein the solution comprises 10-99.9 weight-percent of solvent claim 1 , and preferably 90-99.9 weight-percent of solvent.5. The method of any one of to claim 1 , wherein the solution comprises 0.01-50 weight-percent of material including catalyst material claim 1 , and preferably 0.1-4 weight-percent of material including catalyst material.6. The ...

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Номер записи: 42
13-05-2021 дата публикации

PARTICULATE COMPOSITIONS HAVING LOW FINES CONTENT

Номер: US20210138446A1
Автор: Brandl Corrine L., Deckman Harry W., Horn William C., Lamberti William A.
Принадлежит:

Particulate compositions, especially particulate compositions which are designed to be processed or transferred, are provided. The particulate compositions contain parent particles and composite particles, the composite particles being composed of a binder and fine parent particles. The particulate compositions have a low proportion of free fine parent particles and provide advantages where processing or transferring of the particulate compositions is practiced. 2. A particulate composition according to claim 1 , wherein the second fraction of parent particles has a maximum particle size which is less than 50% of the volume average particle size of the first fraction of parent particles.3. A particulate composition according to claim 1 , wherein the volume average particle size of the composite particles is between about 5 micron and about 500 micron claim 1 , or between about 5 micron and about 200 micron claim 1 , or between about 5 micron and about 100 micron or between 5 micron and about 50 micron.4. A particulate composition according to claim 1 , wherein the particulate composition comprises less than about 5% by weight of free parent particles having a volume average particle size of less than 5 micron based on the total weight of the parent particles.5. A particulate composition according to claim 1 , wherein the composite particles comprise at least a portion of the second fraction of parent particles associated with an external surface of binder particles.6. A particulate composition according to claim 1 , wherein the parent particles are selected from the group consisting of inorganic oxides claim 1 , including metal and non-metal oxides claim 1 , metals claim 1 , metal halides claim 1 , carbon claim 1 , and polymers.7. A particulate composition according to claim 6 , wherein the inorganic oxide parent particles are selected from Groups 2 claim 6 , 4 claim 6 , 13 claim 6 , and 14 metal oxides claim 6 , such as silica claim 6 , alumina claim 6 , magnesia ...

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Номер записи: 43
03-05-2018 дата публикации

Shaped catalyst particle

Номер: US20180117578A1
Автор: Duncan Coupland, Sophie WINFIELD
Принадлежит: JOHNSON MATTHEY PLC

The invention concerns particles which may include a catalytically active component, in the form of a three-dimensional ellipsoidal shape having three major axes at least two of which axes are of different lengths. Beds of such particles are useful for forming particle beds through which a fluid may flow.

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Номер записи: 44
07-05-2015 дата публикации

Process for producing nanoparticles

Номер: US20150126359A1
Автор: Charlotte Williams, Jonathan Weiner, Katherine Orchard, Milo Shaffer, Neil John Brown
Принадлежит: IMPERIAL INNOVATIONS LTD

This invention relates to a process for the preparation of surface-functionalised metal oxide, metal sulphide, metal selenide or metal telluride nanoparticles, a process for the preparation of a composite material comprising such nanoparticles, nanoparticles and a composite material produced thereby, the use of such nanoparticles in catalysis and a catalyst comprising such nanoparticles.

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Номер записи: 45
04-05-2017 дата публикации

PLASMONIC ASSISTED SYSTEMS AND METHODS FOR INTERIOR ENERGY-ACTIVATION FROM AN EXTERIOR SOURCE

Номер: US20170121472A1
Автор: Bourke, JR. Frederic Avery, Vo-Dinh Tuan
Принадлежит:

A method and a system for producing a change in a medium disposed in an artificial container. The method places in a vicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent. 1. (canceled)2. A system for producing a change in a medium to be treated , comprising:an energy source capable of producing an initiation energy comprising one or more of x-rays, gamma rays, or an electron beam;a container holding the medium to be treated;an energy modulation agent surrounded by an encapsulation, disposed inside or in a vicinity of the medium to be treated, and separated physically from the medium to be treated by the encapsulation; andsaid energy modulation agent comprising a photon emitter which emits at least one of ultraviolet and visible light upon interaction with said initiation energy, wherein said at least one of ultraviolet and visible light stimulates a chemical or biological process in the medium.3. The system of claim 2 , wherein the energy modulation agent comprises at least one of a sulfide claim 2 , a telluride claim 2 , a selenide and an oxide semiconductor.4. The system of claim 2 , wherein said at least one of ultraviolet and visible light stimulates claim 2 , for said chemical or biological process claim 2 , a change in an organism activity of the medium.5. The system of claim 2 , wherein said container comprises at least one of an aluminum container claim 2 , a quartz container claim 2 , a glass container claim 2 , a plastic container or a combination thereof.6. The system of claim 2 , wherein said encapsulation comprises at ...

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Номер записи: 46
16-04-2020 дата публикации

Method of producing stable, active and mass-producible ptni catalysts through preferential co etching

Номер: US20200119368A1
Автор: Jiye Fang, Yiliang Luan
Принадлежит: Research Foundation of State University of New York

A method of forming metallic particles, comprising: providing precursor particles comprising a transition metal alloy; supplying carbon monoxide (CO) under reaction conditions which differentially remove a first alloy metal from the precursor particles at a faster rate than a second alloy metal; and, maintaining the reaction conditions until the precursor particles are converted to the particles. The precursor particles may comprise PtNi4, and the particles may be Pt3Ni, formed as hollow nanoframes on a carbon support.

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Номер записи: 47
11-05-2017 дата публикации

HOLLOW METAL NANOPARTICLE, CATALYST INCLUDING SAME, AND METHOD FOR MANUFACTURING HOLLOW METAL NANOPARTICLE

Номер: US20170128915A1
Автор: BANG Jungup, CHO Jun Yeon, CHOI Ran, Hwang Gyo Hyun, KIM Kwanghyun, KIM Sang Hoon
Принадлежит: LG CHEM, LTD.

The present specification relates to hollow metal nanoparticles, a catalyst including the same, and a method for manufacturing hollow metal nanoparticles. 1. A method for manufacturing hollow metal nanoparticles comprising:1) preparing a composition including two or more types of metal salts, one or more types of ionic surfactants, a surface stabilizer and a solvent under air atmosphere; and2) adding a reducing agent to the composition under air atmosphere.2. The method for manufacturing hollow metal nanoparticles of claim 1 , wherein the step 1) includes claim 1 ,preparing a composition by adding two or more types of metal salts, one or more types of ionic surfactants and a surface stabilizer to a solvent; andforming core-shell nanoparticles by the one or more types of ionic surfactants forming a core in the solvent, and a metal ion of the metal salt forming a shell on the core surface, through stirring the composition.3. The method for manufacturing hollow metal nanoparticles of claim 2 , wherein the metal salt includes a first metal salt and a second metal salt claim 2 , andthe metal ion includes a first metal ion or an atomic group ion including a first metal ion dissociated from the first metal salt; and a second metal ion or an atomic group ion including a second metal ion dissociated from the second metal salt,wherein the first metal ion or the atomic group ion including the first metal ion, and the second metal ion or the atomic group ion including the second metal ion have charges opposite to each other.4. (canceled)5. The method for manufacturing hollow metal nanoparticles of claim 3 , wherein the forming of core-shell nanoparticles includes claim 3 ,the one or more types of ionic surfactants forming a core;the first metal ion or the atomic group ion including the first metal ion having a charge opposite to a charge of the ionic surfactant forming a first shell on the core surface; andthe second metal ion or the atomic group ion including the second metal ...

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Номер записи: 48
02-05-2019 дата публикации

Hollow porous carbon nitride nanospheres composite loaded with agbr nanoparticles, preparation method thereof, and its application in dye degradation

Номер: US20190126257A1
Автор: Dongyun Chen, Jianmei Lu, Jun Jiang
Принадлежит: SUZHOU UNIVERSITY

A hollow porous carbon nitride nanospheres composite loaded with AgBr nanoparticles, preparation method thereof, and its application in dye degradation are disclosed. Using silica nanosphere with core-shell structure as a template and hydrogen cyanamide as precursor, melting to enter the pores of mesoporous silica, after calcination, the silica template is etched with ammonium bifluoride to obtain hollow porous carbon nitride nanospheres; dispersing hollow porous carbon nitride nanospheres in deionized water, adding silver nitrate and sodium bromide in sequence, and obtaining silver bromide nanoparticles by in-situ ion exchange method, stirring, washing and centrifuging to obtain the hollow porous carbon nitride nanospheres composite. The hollow porous carbon nitride prepared by the template method has good photocatalytic effect on dye degradation after composite with silver bromide; and it has the advantages of easy production of raw materials, good stability, reusability, etc. It has application prospects in the treatment of dyes.

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Номер записи: 49
02-05-2019 дата публикации

NANOMETER-SIZE ZEOLITIC PARTICLES AND METHOD FOR THE PRODUCTION THEREOF

Номер: US20190126258A1
Автор: GONCHE FORTUNATUS MACHOKE Albert, SCHWIEGER Wilhelm
Принадлежит:

A particulate material and a process for the production thereof are provided, which particulate material comprises zeolitic particles having a crystalline structure, which contain as the main component a zeolite material having a zeolitic framework structure formed from Si, O and optionally Al, and/or a zeolite-like material having a zeolitic framework structure which is formed not only from Si, O and optionally Al, wherein the zeolitic particles are in the form of essentially spherical particles with nanometer dimensions. 1. A particulate material which comprises zeolitic particles having a crystalline structure , which contain as the main component a zeolite material having a zeolitic framework structure formed from Si , O and optionally Al , and/or a zeolite-like material having a zeolitic framework structure which is formed not only from Si , O and optionally Al , characterized in that the zeolitic particles are in the form of essentially spherical particles with nanometer dimensions.2. The particulate material as claimed in claim 1 , characterized in that it comprises zeolitic particles which contain one or more metal-containing components that are not involved in the structure of the zeolitic framework material.3. The particulate material as claimed in claim 1 , characterized in that at least 90% of all the zeolitic particles claim 1 , expressed in terms of the particle number claim 1 , have a particle size of from 50 to 200 nm.4. The particulate material as claimed in claim 1 , characterized in that the zeolitic framework structure is formed from tetrahedral SiOunits claim 1 , wherein up to 30% of all the silicon atoms in the framework structure may be replaced by one or more other network-forming elements selected from elements of main groups 3 claim 1 , 4 and 5 of the periodic table.5. The particulate material as claimed in claim 1 , characterized in that the zeolitic framework structure is a high-silica zeolite structure.6. The particulate material as ...

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Номер записи: 50
23-04-2020 дата публикации

Ag-Pd CORE-SHELL PARTICLE AND USE THEREOF

Номер: US20200122124A1
Автор: Kikugawa Yukiko, Ohta Keiko, Watanabe Yoshiki
Принадлежит:

The manufacturing method provided by the present invention provides a powder material substantially comprising Ag—Pd core-shell particles consisting of Ag core particles containing silver as a principal constituent element and a Pd shell containing palladium as a principal constituent element covering at least part of the surface of the Ag core particles, wherein hydroquinone and/or a quinone is attached to the surface of the Ag—Pd core-shell particles. 1. A powder material substantially comprising Ag—Pd core-shell particles consisting of Ag core particles containing silver as a principal constituent element and a Pd shell containing palladium as a principal constituent element covering at least part of the surface of the Ag core particles , wherein hydroquinone and/or a quinone is attached to the surface of the Ag—Pd core-shell particles.2. The powder material according to claim 1 , wherein with the powder material dispersed in a specific medium claim 1 , the powder material has a Z average particle diameter (D) based on the dynamic light scattering (DLS) method of 0.1 μm to 2 μm claim 1 , and a polydispersity index (PDI) based on the dynamic light scattering method of 0.4 or lower.3. The powder material according to claim 2 , wherein the powder material has a ratio D/Dof the Z average particle diameter (D) to the average particle diameter (D) based on field emission scanning electron microscope imaging (FE-SEM imaging) of 2 or lower.4. The powder material according to claim 1 , wherein with the powder material dispersed in a specific medium claim 1 , the powder material has a peak intensity in the peak particle size range of 0.1 μm to 2 μm in a particle size distribution based on an NNLS algorithm using the dynamic light scattering method of 80% or more of the total peak intensity based on scattering intensity.5. The powder material according to claim 1 , wherein polyvinylpyrrolidone (PVP) is also attached to the surface of the Ag—Pd core-shell particles.6. A ...

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Номер записи: 51
18-05-2017 дата публикации

Titanium oxide fine particles and method for producing same

Номер: US20170137301A1
Автор: Hironori SHIMOITA, Seiji Kaji, Yurie Omori
Принадлежит: Ishihara Sangyo Kaisha Ltd

Provided are: titanium oxide fine particles having small primary particle diameters and small agglomerated particle diameters; and a method for producing titanium oxide fine particles. The BET diameters of the titanium oxide fine particles are 1-50 nm; the agglomerated particle diameters thereof are 1-200 nm; and the (agglomerated particle diameter)/(BET diameter) ratio is 1-40. Titanium (oxy)chloride is hydrolyzed in an aqueous solvent, while controlling the pH range and the temperature range. Preferably, titanium (oxy)chloride is subjected to a primary hydrolysis in an aqueous solvent, and a secondary hydrolysis is subsequently carried out, while adding titanium (oxy)chloride thereto.

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Номер записи: 52
09-05-2019 дата публикации

PLASMONIC ASSISTED SYSTEMS AND METHODS FOR INTERIOR ENERGY-ACTIVATION FROM AN EXTERIOR SOURCE

Номер: US20190134595A1
Автор: Bourke, JR. Frederic A., Vo-Dinh Tuan
Принадлежит:

A method and a system for producing a change in a medium disposed in an artificial container. The method places in a vicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent. 1173-. (canceled)174. A system for curing of a radiation-curable medium , comprising:a mechanism configured to supply an uncured radiation-curable medium including an activatable agent and at least one of a plasmonics agent and an energy modulation agent into the uncured radiation-curable medium; andan initiation energy source configured to apply an initiation energy throughout a region including the uncured radiation-curable medium,wherein the initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly cure the medium by polymerization of polymers in the medium.175. The system of claim 174 , wherein the energy modulation agent is configured to emit light at an energy different from the initiation energy.176. The system of claim 175 , wherein the plasmonics agent 1) enhances or modifies said light from the energy modulation agent or 2) enhances or modifies the initiation energy.177. The system of claim 174 , wherein the initiation energy source comprises:an external energy source; oran energy source that is at least partially in a container holding the medium.178. The system of claim 174 , wherein the initiation energy source comprises at least one of an x-ray source claim 174 , a gamma ray source claim 174 , an electron beam source claim 174 , an UV radiation source claim 174 , a microwave source claim 174 , or a ...

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Номер записи: 53
09-05-2019 дата публикации

PLASMONIC ASSISTED SYSTEMS AND METHODS FOR INTERIOR ENERGY-ACTIVATION FROM AN EXTERIOR SOURCE

Номер: US20190134596A1
Автор: Bourke, JR. Frederic A., Vo-Dinh Tuan
Принадлежит:

A method and a system for producing a change in a medium disposed in an artificial container. The method places inavicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent. 1243.-. (canceled)244. A radiation-cured article , comprising:a radiation-cured medium; andat least one of an energy modulation agent and a plasmonics agent distributed throughout the medium;said energy modulation agent being a substance which converted an initiation energy to a light which cured the radiation-cured medium by polymerization of polymers in the radiation-cured medium.245. The article of claim 244 , wherein said at least one energy modulation agent comprises luminescent agents including at least one of a sulfide claim 244 , a telluride claim 244 , a selenide and an oxide semiconductor.246. The article of claim 245 , wherein the energy modulation agent comprises at least one of YO; ZnS; ZnSe; MgS; CaS; Mn claim 245 , Er ZnSe; Mn Er MgS; Mn claim 245 , Er CaS; Mn claim 245 , Er ZnS; Mn claim 245 ,Yb ZnSe; Mn claim 245 ,Yb MgS; Mn claim 245 , Yb CaS; Mn claim 245 ,Yb ZnS:Tb claim 245 , Er; ZnS:Tb; YO:Tb; YO:Tb claim 245 , Er; ZnS:Mn; ZnS:Mn claim 245 ,Er.247. The article of claim 245 , wherein said luminescent agents comprise nanotubes claim 245 , nanoparticles claim 245 , chemilumiscent particles claim 245 , and bioluminescent particles claim 245 , and mixtures thereof.248. The article of claim 245 , wherein said luminescent agents comprise semiconducting or metallic materials.249. The article of claim 245 , wherein said luminescent agents comprise ...

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Номер записи: 54
07-08-2014 дата публикации

Plasmonic assisted systems and methods for interior energy-activation from an exterior source

Номер: US20140222117A1
Автор: Frederic Avery Bourke, JR., Tuan Vo-Dinh
Принадлежит: Duke University, Immunolight LLC

A method and a system for producing a change in a medium disposed in an artificial container. The method places in a vicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent.

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Номер записи: 55
14-08-2014 дата публикации

PROCEDURE FOR OBTAINING A SUBSTRATE WITH Au NANOCLUSTERS ATTACHED TO ITS SURFACE, AND THE SUBSTRATE AND CATALYST OBTAINED THROUGH THIS PROCEDURE

Номер: US20140228201A1
Автор: LLORCA PIQUE Jordi, Mendoza Gomez Ernest
Принадлежит: UNIVERSITAT POLITÈCNICA DE CATALUNYA

Method for producing a substrate with Au (gold) nanoclusters affixed to the surface thereof and substrate and catalyst obtained by means of said method. The method consists in preparing a solution containing, in disperse form, Au nanoclusters and, also in disperse form, a substrate with a surface functionalised with a polyelectrolyte that confers a net electric charge thereon, and in intensely agitating said solution to affix Au nanoclusters to the substrate surface. This results in a substrate that has a surface with Au nanoclusters affixed in disperse form, significantly without clusters. The invention also relates to a catalyst that comprises said substrate with Au nanoclusters affixed to the surface thereof. Said catalyst is particularly suitable for use in oxidation reactions. 1. The procedure for obtaining a substrate with Au nanoclusters attached to its surface , characterised in that it involves:preparing a solution with dispersed Au nanoclusters as well as a dispersed form of a substrate whose surface is functionalised with a polyelectrolyte which gives it a net electrical charge; andsubjecting said solution to intense agitation in order to cause Au nanoclusters to attach to the surface of the substrate.2. The procedure according to claim 1 , characterised in that the intensive agitation of the solution intended to cause Au nanoclusters to attach to the surface of the substrate is performed by subjecting the solution to ultrasonication.3. The procedure according to claim 1 , characterised in that it includes a prior stage of Au nanocluster formation carried out by subjecting a solution comprising at least one precursor of Au and a polyelectrolyte to ultrasonication.4. The procedure according to claim 1 , characterised in that the substrate comprises one or more of the nanostructured materials.5. The procedure according to claim 4 , characterised in that the substrate comprises inorganic oxide nanoparticles.6. The procedure according to claim 4 , ...

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Номер записи: 56
17-06-2021 дата публикации

METHOD FOR PREPARING CATALYTIC NANOPARTICLES, CATALYST SURFACES, AND/OR CATALYSTS

Номер: US20210178381A1
Автор: Busardo Denis, VENTELON Lionel
Принадлежит:

A method for preparing catalyst particles that includes providing an average atomic number Zavr for a catalyst starting material, providing an ion beam having an ion beam current and selecting an ion beam dose X expressed in ions/g, based on the weight of the catalyst starting material, where X follows the following equations: (7/Zavr)×10ions/g Подробнее

Номер записи: 57
22-09-2022 дата публикации

POROUS COMPOSITE

Номер: US20220297092A1
Автор: HIDAKA Kenichi, IZUMI Yunie, KUBOYAMA Masashi, Nakashima Takuya
Принадлежит: NGK Insulators, Ltd.

A porous composite includes a porous base material, and a porous collection layer provided on a collection surface of the base material (e.g., on inner surfaces of first cells). The collection layer contains catalyst particles of rare-earth oxide or transition-metal oxide situated in pores of the collection surface of the base material. The collection surface has a covered region that is covered with the collection layer and whose total area is 60% or less of the total area of the collection surface. 1. A porous composite comprising:a porous base material; anda porous collection layer provided on a collection surface of said base material,wherein said collection layer contains catalyst particles of rare-earth oxide or transition-metal oxide situated in pores of said collection surface of said base material, andsaid collection surface has a covered region that is covered with said collection layer and whose total area is 60% or less of a total area of said collection surface.2. The porous composite according to claim 1 , wherein{'sub': '2', 'said catalyst particles are made of CeO, lanthanum-manganese-cerium oxide, or lanthanum-praseodymium-cerium oxide.'}3. The porous composite according to claim 1 , whereinsaid catalyst particles have a maximum particle size less than or equal to 10 μm, andsaid catalyst particles have a median diameter less than 1.0 μm.4. The porous composite according to claim 1 , whereina total area of said covered region situated in a region other than the pores of said collection surface is 30% or less of the total area of said collection surface.5. The porous composite according to claim 1 , whereinsaid collection layer in the pores of said collection surface of said base material has a porosity higher than or equal to 20% and lower than or equal to 80%.6. The porous composite according to claim 1 , whereinsaid base material has a honeycomb structure whose interior is partitioned into a plurality of cells by a partition wall, andat least some ...

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Номер записи: 58
23-05-2019 дата публикации

ZSM-5 CATALYST

Номер: US20190151831A1
Автор: Castellano Christopher R., Dowd Brendan Patrick, Gao Xingtao
Принадлежит:

Disclosed in certain embodiments are ZSM-5 zeolite microspheres. Disclosed in certain embodiments is a method of forming ZSM-5 zeolite microspheres including: 1) shaping a mixture into microspheres where the mixture includes a silica material and of particulates selected from at least one high-density material with an absolute bulk density of at least 0.3 g/cc, ZSM-5 zeolite crystals, and combinations thereof; 2) calcining the microspheres; and 3) reacting and subsequently heating the microspheres with at least one alkali solution to form ZSM-5 zeolite in-situ on the microspheres, where the ZSM-5 zeolite microspheres contain substantially no clay or calcined clay material. 150-. (canceled)51. ZSM-5 zeolite microspheres that contain substantially no clay or calcined clay material , wherein the ZSM-5 zeolite microspheres have a ZSM-5 zeolite content of at least 70 wt. %.52. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres have an absolute bulk density of at least 0.5 grams per cubic centimeter (g/cc).53. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres contain substantially no residual spinel or reactive kaolin.54. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres contain inter-bound/inter-growth ZSM-5 crystals with an average crystal size measured by x-ray diffraction of less than 800 angstroms.55. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres have an air jet attrition rate (AJAR) below 5.0.56. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres have a silica/alumina (SiO/AlO) molar ratio (SAR) in a range from 20 to 100.57. The ZSM-5 zeolite microspheres of claim 51 , wherein the ZSM-5 zeolite microspheres have a size of about 10 to 250 microns.58. ZSM-5 zeolite microspheres formed by treating microspheres with at least one alkali solution claim 51 , wherein the ZSM-5 zeolite microspheres contain ...

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Номер записи: 59
07-06-2018 дата публикации

CATALYST SUPPORT AND RELATED PROCESSES

Номер: US20180155458A1
Автор: Barbosa Cesar Augusto Sales, Cardoso Renata da Silva, Fernandes Jonas Alves, Washburger Marcia Regina
Принадлежит: Braskem S.A.

The present invention describes a catalyst support, which is used as an inorganic carrier for a Ziegler-Nata catalyst (ZN), using a modified spray cooling method. Such a catalyst support is prepared from alcoholic solutions of (a) an inorganic compound, in which the inorganic compound is a magnesium compound and (b) an inorganic compound and one or more additives. The solutions are prepared at a temperature below 100° C., carried through a nozzle placed inside a reactor, and sprayed into droplets forming a solid precipitate, which is generally spherical, when in contact with an inert hydrocarbon solvent at low temperature. The obtained catalyst support is reacted with a titanium compound, preferably titanium tetrachloride, in order to produce an active catalyst for olefin polymerization. 1. A catalyst support component comprising an inorganic compound , an alcohol ROH , and an additive.2. The catalyst support component of claim 1 , having at least a first thermal transition peak between 112° C. and 150° C. as shown by DSC.3. The catalyst support component of claim 1 , wherein the alcohol ROH consists of a R chosen from a C1-C18 hydrocarbon group.4. The catalyst support component of claim 1 , wherein the additive is a non-polymeric additive.5. The catalyst support component of claim 4 , wherein the non-polymeric additive is a fluorine-based additive.6. The catalyst support component of claim 1 , wherein the additive is selected from one or more of hydrofluoroalkenes (HFAs) claim 1 , polyaryletherketone (PAEK) derivatives claim 1 , poly(oxy-1 claim 1 ,2-ethanediyl) derivatives claim 1 , aliphatic polyethers claim 1 , polylactic acid claim 1 , or polysorbates.7. The catalyst support component of claim 5 , wherein the additive is fluorine-based and selected from the group consisting of perfluoropentane; 1 claim 5 ,1 claim 5 ,1 claim 5 ,2-tetrafluorethane; 1 claim 5 ,1 claim 5 ,1 claim 5 ,2 claim 5 ,3 claim 5 ,3 claim 5 ,3-heptafluoropentane; 1 claim 5 ,1 claim 5 ,1 ...

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Номер записи: 60
22-09-2022 дата публикации

CORE-SATELLITE MICELLE INCLUDING TETRA-BLOCK COPOLYMER AND PREPARATION METHOD THEREOF

Номер: US20220298284A1
Автор: Ahn Seonghyeon, Kim Jin Kon
Принадлежит:

Proposed are a core-satellite micelle containing a tetra-block copolymer and a preparation method thereof. The core-satellite micelle includes a core, a shell surrounding the core, and a plurality of satellite domains positioned inside the shell. The core-satellite micelle contains a tetra-block copolymer represented by Structural Formula 1 below. The shell includes a first-monomer first block A1 and a first-monomer second block A2, and the satellite domain includes a second-monomer first block B1 and a second-monomer second block B2. The core-satellite micelle is foiled through self-assembly of the tetra-block copolymer, thereby having a larger interfacial contact area than existing block-copolymer micelles. Therefore, the core-satellite micelle can be used in next-generation nanotechnology applications such as drug delivery systems, porous catalyst materials, and sensors. 1. A core-satellite micelle comprising a core , a shell surrounding the core , and a plurality of satellite domains disposed inside the shell ,wherein the core-satellite micelle contains a tetra-block copolymer represented by Structural Formula 1 below,the shell contains a first-monomer first block A1 and a first-monomer second block A2,the satellite domain contains a second-monomer first block B1, and{'b': '2', 'claim-text': {'br': None, 'A1-B1-A2-B2 \u2003\u2003[Structural Formula 1]'}, 'the core contains a second-monomer second block B,'}In Structural Formula 1,A1 is the first-monomer first block,B1 is the second-monomer first block,A2 is the first-monomer second block, andB2 is the second-monomer second block.2. The core-satellite micelle according to claim 1 , wherein the satellite domains surround the core.3. The core-satellite micelle according to claim 2 , wherein the plurality of satellite domains forms a satellite domain layer.4. The core-satellite micelle according to claim 1 , wherein the core-satellite micelle contains the first-monomer second block A2 between the core and the ...

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Номер записи: 61
18-06-2015 дата публикации

CATALYST, METHOD FOR PRODUCING CATALYST, AND METHOD FOR PRODUCING HYDROGEN-CONTAINING GAS USING CATALYST, AND HYDROGEN GENERATING DEVICE, FUEL CELL SYSTEM, AND SILICON-SUPPORTED CEZR-BASED OXIDE

Номер: US20150171448A1
Автор: IKARI Kazumasa, Miyazaki Tatsuro, NAGAOKA Katsutoshi, Ueyama Toshihiko, YANO Takuya
Принадлежит:

The present invention provides a catalyst in which a reaction initiation temperature at which self-heating function is exhibited is low and which is capable of suppressing carbon accumulation even when a reaction is repeated. The catalyst of the present invention includes a CeZr-based oxide, silicon, and a catalytically active metal, wherein the CeZr-based oxide satisfies CeZrO(x+y=1) and the silicon satisfies molar ratios of 0.02≦Si/Zr and 0.01 Подробнее

Номер записи: 62
15-06-2017 дата публикации

Process of preparing 4-methyl-3-decen-5-one

Номер: US20170166504A1
Автор: Alexandra Velty, Amadeo Fernández MIRANDA, Avelino Corma Canos, Jaime Renovell Gomez, Manuel Querol Sans, Sara Iborra Chornet
Принадлежит: International Flavors and Fragrances Inc

A method of preparing 4-methyl-3-decen-5-one. The method includes the step of oxidizing 4-methyl-3-decen-5-ol in the presence of (i) oxygen and (ii) a metal catalyst, wherein the metal catalyst contains a catalytic metal deposited on nanoparticle support.

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Номер записи: 63
25-06-2015 дата публикации

USE OF CERTAIN MANGANESE-ACCUMULATING PLANTS FOR CARRYING OUT ORGANIC CHEMISTRY REACTIONS

Номер: US20150174566A1
Автор: ESCANDE Vincent, GRISON Claude
Принадлежит:

The use, after heat treatment, of manganese accumulating plants for carrying out chemical reactions. 1Alyxia, Azolla, Beauprea, Beaupreopsis, Bridelia, Crotalaria, Dicranopteris, Dipteris, Eugenia, Gleichenia, Gossia, Macadamia, Maytenus, Pinus, Phytolacca, Spermacone, Stenocarpus, VirotiaGrevillea. A method for preparing a catalyst for organic synthesis reactions , comprising , preparing a composition containing at least one mono- or polymetallic agent , the metal or metals of which are selected from metals originating from , after heat treatment , of a plant or of a part of a plant belonging to one of the genera selected from or that has accumulated manganese (Mn) and optionally a metal or several metals in particular selected from magnesium (Mg) , zinc (Zn) , copper (Cu) , iron (Fe) , calcium (Ca) , cadmium (Cd) , aluminium (Al) , said agent begin a catalyst for implementing organic synthesis reactions involving said agent as catalyst.2Alyxia, Azolla, Beauprea, Beaupreopsis, Bridelia, Crotalaria, Dicranopteris, Dipteris, Eugenia, Gleichenia, Gossia, Helanthius, Macadamia, Maytenus, Pinus, Spermacone, Stenocarpus, VirotiaGrevillea. A method for implementing organic synthesis reaction , comprising providing a composition containing a catalyst for an organic synthesis reaction , said composition prepared by the heat treatment of a plant or of a part of a plant belonging to one of the genera selected from or that has accumulated manganese (Mn) and optionally a metal or several metals in particular selected from magnesium (Mg) , zinc (Zn) , copper (Cu) , iron (Fe) , calcium (Ca) , cadmium (Cd) , aluminium (Al) and containing at least one mono- or polymetallic agent , the metal or the metals of which are selected from the metals originating from said plant , said composition being practically devoid of organic matter , said agent being said catalyst.3Beauprea gracilis, Beauprea montana, Beaupreopsis paniculata, Garcinia amplexicaulis, Grevillea exul, Grevillea ...

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Номер записи: 64
22-06-2017 дата публикации

Composite material used for catalyzing and degrading nitrogen oxide and preparation method and application thereof

Номер: US20170173571A1
Автор: Chen Dongyun, LU Jianmei
Принадлежит:

The invention discloses a composite material used for catalyzing and degrading nitrogen oxide and its preparation method and application thereof. The invention of the hollow g-CNnanospheres/reduced graphene oxide composite-polymer carbonized nanofiber material is prepared as follow: 1) the preparation of silica nanospheres; 2) the preparation of hollow g-CNnanospheres; 3) the preparation of graphene oxide; 4) the preparation of surface modified hollow g-CNnanoparticles preparation; 5) the preparation of composites; 6) the preparation of composite-polymer carbon nanofiber material. The raw materials used in the process is low cost and easy to get; the operation of the invention is simple and convenient without the use of expensive equipment in the whole process; the composite has high adsorption efficiency of ppb level nitrogen oxide with good repeatability. 1. A preparation method of a hollow graphite phase carbon nitride nanosphere/reduction-oxidation graphene composite and polymer carbide nano fiber material , comprises the following steps:(1) preparation of silica nanospheres:in accordance with a mass ratio of concentrated ammonia:ethanol:water:ethyl silicate =1:15˜20:1˜5:1˜2, add ethyl silicate into a mixture of concentrated ammonia, ethanol and water, after mixing, keep standing for 1˜2 hours, then in accordance with a mass ratio of ethyl silicate:a mixture of ethyl silicate and octadecyltrimethoxysilane=1:1-2, add the mixture of ethyl silicate and octadecyltrimethoxysilane, mixing evenly and keep standing for 3˜5 hours, a resulted mixture is centrifugated, dried and calcined for 6˜8 hours at 550˜570° C., and then washed with 1M hydrochloric acid and dried, to obtain the silica nanospheres,(2) preparation of hollow graphite phase carbon nitride nanospheres:under vacuum condition, use the silica nanospheres in the step (1) as a template and mix with cyanamide in accordance with the mass ratio of 1:3˜7 and stir for 3˜5 hours, ultrasonic treat for 2˜3 hours, and ...

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Номер записи: 65
22-06-2017 дата публикации

POLYMER PRODUCT AND METHOD FOR SELECTIVELY METALLIZING POLYMER SUBSTRATE

Номер: US20170175270A1
Автор: MAO BIFENG, Zhou Wei
Принадлежит:

A polymer product with a metal layer coated on the surface thereof is provided. The polymer product includes a polymer substrate and a metal layer formed on at least a part of a surface of the polymer substrate. The surface of the polymer substrate covered by the metal layer is formed by a polymer composition comprising a polymer and a doped tin oxide. A doping element of the doped tin oxide comprises niobium. The doped tin oxide has a coordinate L* value of about 70 to about 100, a coordinate a value of about −5 to about 5, and a coordinate b value of about −5 to about 5 in a CIELab color space. 1. A polymer product comprising:a polymer substrate; anda metal layer formed on at least a part of a surface of the polymer substrate,wherein the surface of the polymer substrate covered by the metal layer is formed by a polymer composition comprising a polymer and a doped tin oxide, andwherein a doping element of the doped tin oxide comprises niobium, and the doped tin oxide has a coordinate L* value of about 70 to about 100, a coordinate a value of about −5 to about 5, and a coordinate b value of about −5 to about 5 in a CIELab color space.2. The polymer product of claim 1 , wherein the doped tin oxide has a light reflectivity of no more than 60% to a light with a wavelength of about 1064 nm.3. The polymer product of claim 1 , wherein based on the total weight of the doped tin oxide claim 1 , the content of the tin oxide is about 70 wt % to about 99.9 wt % claim 1 , and the content of the niobium is about 0.1 wt % to about 30 wt % calculated as NbO.4. The polymer product of claim 1 , wherein the doped tin oxide has an average particle size of about 10 nm to about 10 μm.5. The polymer product of claim 1 , wherein the doped tin oxide is prepared by steps of:providing a powder mixture comprising a tin oxide and at least one compound containing the doping element, andsintering the powder mixture under an oxidizing atmosphere,wherein the compound comprises at least one of an ...

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Номер записи: 66
28-05-2020 дата публикации

LOW-PLATINUM CATALYST BASED ON NITRIDE NANOPARTICLES AND PREPARATION METHOD THEREOF

Номер: US20200164350A1
Автор: Chen Rong, LIAO Shijun, LUO Junming, TIAN Xinlong
Принадлежит: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

The present invention discloses a low-platinum catalyst based on nitride nanoparticles and a preparation method thereof. A component of an active metal of the catalyst directly clades on a surface of nitride particles or a surface of nitride particles loaded on a carbon support in an ultrathin atomic layer form. Preparation steps including: preparing a transition-metal ammonia complex first, nitriding the obtained ammonia complex solid under an atmosphere of ammonia gas to obtain nitride nanoparticles; loading the nitride nanoparticles on a surface of a working electrode, depositing an active component on a surface of the nitride nanoparticles by pulsed deposition, to obtain the low platinum loading catalyst using a nitride as a substrate. The catalyst may be used as an anode or a cathode catalyst of a low temperature fuel cell, has very high catalytic activity and stability, can greatly reduce a usage amount of a precious metal in the fuel cell, and greatly reduces a cost of the fuel cell. The present invention has important characteristics of being controllable in deposition amount, simple and convenient to operate, free of protection of inert atmosphere, and etc., and is suitable for large-scale industrial production. 1. A preparation method of a low-platinum catalyst based on nitride nanoparticles , the preparation method comprises following steps:(1) a preparation of the nitride nanoparticles: dissolving one or more transition metal compounds in a non-aqueous solvent, then introducing ammonia gas for 0.5-1 hour, evaporating the solvent at 50-90° C. in a vacuum drying oven to obtain a transition-metal ammonia complex; high temperature nitriding the transition-metal ammonia complex in ammonia gas atmosphere for 3-5 hours to prepare transition-metal nitride nanoparticles; the transition-metal ammonia complex includes an ammonia complex formed by any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo or Ta, or a binary or ternary ammonia complex formed by two or more of ...

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Номер записи: 67
08-07-2021 дата публикации

CATALYST COMPOSITION FOR OXIDATIVE DEHYDROGENATION OF ALKANE

Номер: US20210205789A1
Автор: DOOSA Hima Bindu, Kapur Gurpreet Singh, Karthikeyani Arumugam Velayutham, LOGANATHAN Kumaresan, PULIKOTTIL Alex Cheru, RAMAKUMAR Sankara Sri Venkata, Sau Madhusudan, Thakur Ram Mohan
Принадлежит: INDIAN OIL CORPORATION LIMITED

The present invention provides a catalyst composition for the production of olefins from lighter alkanes by oxidative dehydrogenation route and methods of making the dehydrogenation catalyst composites. 1. A catalyst composition for production of olefins from lighter alkanes by oxidative dehydrogenation , wherein the catalyst composition comprises:a) a microsphere catalyst support material, wherein the microsphere catalyst support material comprises a binder, a high surface area silica/silica-alumina and a hydrothermally stable alumina;b) a catalytic material; andc) a promoter.2. The catalyst composition as claimed in claim 1 , wherein the binder comprises an inorganic nitrate binder in the form of a solution present in an amount ranging from 1-10%.3. The catalyst composition as claimed in claim 1 , wherein the high surface area silica/silica-alumina is selected from a group consisting of fumed silica claim 1 , spray dried silica from ammonium polysilicate claim 1 , amorphous silica-alumina claim 1 , and combinations thereof.4. The catalyst composition as claimed in claim 1 , wherein the alumina is modified with an f-block element to obtain hydrothermal stability; and wherein the f-block element is selected from a group consisting of lanthanum claim 1 , cerium claim 1 , and combinations thereof.5. The catalyst composition as claimed in claim 4 , wherein lanthanum or cerium is present at a concentration of 0.1 wt % to 5 wt % claim 4 , based on the total weight of the catalyst.6. The catalyst composition as claimed in claim 1 , wherein the catalytic material comprises a vanadium-chromium complex disposed on the microsphere catalyst support material.7. The catalyst composition as claimed in claim 6 , wherein vanadium oxide is present at a concentration of 0.1 wt % to 20 wt % claim 6 , based on the total weight of the catalyst.8. The catalyst composition as claimed in claim 6 , wherein chromium oxide is present at a concentration of 0.5 wt % to 25 wt % claim 6 , based ...

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Номер записи: 68
08-07-2021 дата публикации

FUNCTIONAL POROUS PARTICLES EMBEDDED/IMMOBILIZED WITHIN POROUS STRUCTURES, FORMATION & USES THEREOF

Номер: US20210205803A1
Автор: Shirman Elijah, SHIRMAN Tanya
Принадлежит:

In one aspect, a composite porous composition is disclosed, which comprises a porous structure including a plurality of pores, and a plurality of functional particles distributed within at least some of said pores of the porous structure, wherein the particles comprise porous particles. 1. A composition , comprising:a macroscopic porous structure including a plurality of pores, anda plurality of functional particles coupled to said macroscopic porous structure,wherein said functional particles comprise porous particles.2. The composition of claim 1 , wherein said pores of said macroscopic porous structure have pore sizes in a range of about 100 nm to about 5 mm.3. The composition of claim 1 , wherein each of said functional porous particles comprises a plurality of pores with sizes in a range of about 0.5 nm to about 100 microns.4. The composition of claim 3 , wherein said functional porous particles have a size in a range of about 50 nm to about 2 mm.5. The composition of claim 1 , wherein said functional porous particles are distributed within at least a portion of the pores of the macroscopic porous structure.6. The composition of claim 5 , wherein at least one of said pores of the macroscopic porous structure comprises a plurality of functional porous particles.7. The composition of claim 1 , wherein at least a portion of said functional porous particles are at least partially embedded in one or more structural elements of said macroscopic porous structure.8. The composition of claim 1 , further comprising at least one functional component coupled to at least one of said functional porous particles.9. The composition of claim 8 , wherein said at least one functional component is deposited on an inner surface of a wall of a pore of said at least one of said functional porous particles.10. The composition of claim 8 , wherein said at least one functional component is embedded at least partially within a wall of a pore of said at least one of said functional porous ...

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Номер записи: 69
09-07-2015 дата публикации

NANOSTRUCTURES HAVING CRYSTALLINE AND AMORPHOUS PHASES

Номер: US20150190785A1
Автор: Chen Xiaobo, Mao Samuel S.
Принадлежит: The Regents of the University of California

The present invention includes a nanostructure, a method of making thereof, and a method of photocatalysis. In one embodiment, the nanostructure includes a crystalline phase and an amorphous phase in contact with the crystalline phase. Each of the crystalline and amorphous phases has at least one dimension on a nanometer scale. In another embodiment, the nanostructure includes a nanoparticle comprising a crystalline phase and an amorphous phase. The amorphous phase is in a selected amount. In another embodiment, the nanostructure includes crystalline titanium dioxide and amorphous titanium dioxide in contact with the crystalline titanium dioxide. Each of the crystalline and amorphous titanium dioxide has at least one dimension on a nanometer scale. 1. A method of making a nanostructure comprising:{'sub': '2', 'providing a titanium dioxide (TiO) crystalline core; and'}{'sub': 2', '2', '2', '2, 'changing a portion of the TiOcrystalline core to a TiOamorphous outer most shell in contact with and completely surrounding the crystalline core, wherein the TiOamorphous outer most shell further comprises a hydrogen dopant and has a composition different than the TiOcrystalline core.'}2. The method of further comprising synthesizing the TiOcrystalline core.3. The method of wherein synthesizing the TiOcrystalline core comprises:providing a precursor; and{'sub': '2', 'processing the precursor to produce the TiOcrystalline core.'}4. The method of wherein the precursor is selected from the group consisting of a gas claim 3 , a liquid claim 3 , a solution claim 3 , a gel claim 3 , and a solid.5. The method of wherein processing the precursor comprises a technique selected from the group consisting of a solution chemistry technique claim 3 , a sol-gel technique claim 3 , a hydrothermal technique claim 3 , a solvothermal technique claim 3 , a thermal technique claim 3 , an electrochemistry technique claim 3 , a chemical vapor deposition technique claim 3 , and a physical vapor ...

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Номер записи: 70
07-07-2016 дата публикации

POROUS SILICA HAVING HIGH PORE VOLUME AND METHODS OF MAKING AND USING SAME

Номер: US20160193588A1
Автор: Datt Ashish, Egger Samuel Michael, Haynes Christy Lynn
Принадлежит:

Silica particles, and methods of making and using silica particles are disclosed herein. In some embodiments, the silica particles are hollow, include an outer shell portion having a mesoporous structure, and have a pore volume of at least 4 cm/g. In some embodiments, the silica particles include an outer shell portion having a mesoporous structure forming a cavity, the silica particles have an average pore diameter of 3 to 100 nm, and at least a portion of the silica particles include one or more core nanoparticles within the cavity. Silica particles as disclosed herein can be useful in a wide variety of applications such as selective separations (e.g., gas separations or purifications) based on structure. 1. Hollow silica particles comprising an outer shell portion having a mesoporous structure , wherein the silica particles have a pore volume of at least 4 cm/g as determined by nitrogen physisorption at partial pressures of P/Pof 0.99.2. The hollow silica particles of claim 1 , wherein the silica particles have an average pore diameter of 3 to 100 nm as determined by Barrett-Joyner-Halenda/Kruk-Jaroniec-Sayari (BJH/KJS) nitrogen physisorption measurements claim 1 , transmission electron microscopy (TEM) claim 1 , and small angle x-ray scattering (SAXS).3. The hollow silica particles of claim 1 , wherein the silica particles have an average particle diameter of 20 to 10 claim 1 ,000 nm as determined by transmission electron microscopy (TEM) claim 1 , and a polydispersity index of 0.005 to 0.200 as determined by dynamic light scattering (DLS).4. The hollow silica particles of claim 1 , wherein the silica particles have an outer shell portion with an average thickness of 3 to 100 nm.5. The hollow silica particles of claim 1 , wherein the silica particles have a surface area of at least 1200 m/g as measured by BET theory.6. The hollow silica particles of claim 1 , wherein the hollow silica particles exhibit a small angle x-ray scattering pattern in which one or more ...

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Номер записи: 71
05-07-2018 дата публикации

Low-platinum catalyst based on nitride nanoparticles and preparation method thereof

Номер: US20180185825A1
Автор: Junming LUO, Rong Chen, Shijun Liao, Xinlong TIAN
Принадлежит: South China University of Technology SCUT

A low-platinum catalyst based on nitride nanoparticles and a preparation method thereof. A component of an active metal of the catalyst directly clades on a surface of nitride particles or a surface of nitride particles loaded on a carbon support in an ultrathin atomic layer form. Preparation steps including: preparing a transition-metal ammonia complex first, nitriding the obtained ammonia complex solid under an atmosphere of ammonia gas to obtain nitride nanoparticles; loading the nitride nanoparticles on a surface of a working electrode, depositing an active component on a surface of the nitride nanoparticles by pulsed deposition, to obtain the low platinum loading catalyst using a nitride as a substrate. The catalyst may be used as an anode or a cathode catalyst of a low temperature fuel cell.

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Номер записи: 72
20-06-2019 дата публикации

PROCESS TO PEPTIZE ALUMINA FOR FLUIDIZABLE CATALYSTS

Номер: US20190184375A1
Автор: Cheng Wu-Cheng, Krishnamoorthy Sundaram, Singh Udayshankar, Ziebarth Michael Scott
Принадлежит: W.R. GRACE & CO.- CONN.

A process for preparing a peptized alumina having increased solids and acid contents and a decreased water content. The process comprising mixing a boehmite or pseudoboehmite alumina and acid with a high intensity, high energy mixer at a ratio of 0.16 to 0.65 moles acid/moles alumina for a time period sufficient to form a substantially free-flowing solid particulate having a solids content of 45 to 65 wt %. When used in catalyst manufacture, peptized alumina produced by the process provides an increased rate in catalyst production and decreased costs due to high solids concentration and the presence of less water to be evaporated. 1. A process comprising:mixing a boehmite alumina and acid at a ratio of about 0.16 to about 0.65 moles acid/moles alumina for a time period and with a mixer having a sufficient energy and intensity to form a substantially free-flowing solid particulate and forming a substantially free-flowing peptized alumina solid particulate having a solids content of about 45 to about 65 wt %.2. The process of wherein the free-flowing solid particulate has a pH of 2.5 to 4.0 when slurried in an aqueous solution at a concentration of 20 wt % solids.3. The process of wherein the ratio acid to alumina is from about 0.20 to about 0.50 moles acid/moles alumina.4. The process of wherein the solids content of the free-flowing solid particulate is 47 to 62 wt %.5. The process of wherein the process is a batch process.6. The process of wherein the process is a continuous process.7. The process of wherein the time period is less than 10 minutes.8. The process of wherein the ratio is 0.20 to 0.50 moles acid/moles alumina.9. The process of wherein the ratio is 0.25 to 0.45 moles acid/moles alumina.10. The process of wherein the ratio is 0.3 to 0.40 moles acid/moles alumina.11. The process of wherein the solids content of the free-flowing peptized alumina solid particulate is from 50 to 60 wt %.12. The process of wherein the mixer is a high intensity mixer for ...

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Номер записи: 73
11-06-2020 дата публикации

PROMOTER METAL CONTAINING PEROVSKITE-TYPE COMPOUND FOR GASOLINE EXHAUST GAS APPLICATIONS

Номер: US20200179908A1
Автор: Simmance Kerry, Thompsett David
Принадлежит:

A three-way catalyst composition, and its use in an exhaust system for internal combustion engines, is disclosed. The composition can comprise a compound of formula (I): AA′BB′Oand a promoter metal component, wherein A is an ion of a metal of group 2 or 3 of the periodic table of elements; wherein A′ is an ion of a metal of group 1, 2, or 3 of the periodic table of elements; wherein B and B′ are ions of metal of groups 4, 6, 7, 8, 9, 10, 11, or 13 of the periodic table of elements; wherein x is from 0.7 to 1; wherein y is from 0 to 0.5; and wherein z is from 0 to 0.5. 1. A composition comprising a perovskite type compound of formula (I): AA′BB′Oand a promoter metal component , wherein A is an ion of a metal of group 2 or 3 of the periodic table of elements; wherein A′ is an ion of a metal of group 1 , 2 , or 3 of the periodic table of elements; wherein B and B′ are ions of metal of groups 4 , 6 , 7 , 8 , 9 , 10 , 11 , or 13 of the periodic table of elements; wherein x is from 0.7 to 1; wherein y is from 0 to 0.5; and wherein z is from 0 to 0.5.2. The composition of claim 1 , wherein A is Y claim 1 , La claim 1 , Nd claim 1 , Ce claim 1 , or Gd.3. The composition of claim 2 , wherein A is La or Y.4. The composition of claim 1 , wherein A′ is Sr claim 1 , Ca claim 1 , Y claim 1 , or Ce.5. The composition of claim 1 , wherein B is Mn claim 1 , Co claim 1 , Fe claim 1 , or Ni.6. The composition of claim 5 , wherein B is Mn or Fe.7. The composition of claim 6 , wherein B is Fe.8. The composition of claim 1 , wherein B′ is Mn claim 1 , Fe claim 1 , Ni claim 1 , Co claim 1 , or Cu.9. The composition of claim 8 , wherein B′ is Cu.10. The composition of claim 1 , wherein x is from 0.8 to 1.11. The composition of claim 1 , wherein y is from 0 to 0.4.12. (canceled)13. The composition of claim 1 , wherein z is from 0 to 0.4.14. (canceled)15. The composition of claim 1 , wherein the specific surface area of the compound of formula (I) is at least 8 m/g.16. The composition of ...

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Номер записи: 74
22-07-2021 дата публикации

ROBUST BIJELS FOR INTERFACIAL CATALYSIS AND INTERPHASE SEPARATIONS

Номер: US20210220791A1
Автор: DI VITANTONIO Giuseppe, Lee Daeyeon, STEBE Kathleen, WANG Tiancheng
Принадлежит:

Methods of making robust bijels include dispersing metal oxide precursors and/or metal salts into at least one phase of a bijel and hydrolyzing and condensing the metal oxide precursors and/or metal salts in a sol-gel reaction to form sintered bridges between interfacially jammed surface-active nanoparticles. The methods can be used with any bijels, including those produced during solvent transfer-induced phase separation (STRIPS) methods and other methods. A robust bijel includes chemically sintered bridges between the interfacially jammed surface-active nanoparticles. Methods of making nanocatalyst-functionalized sintered bijels include adsorbing metal salts to a surface of sintered interfacially jammed nanoparticles of bijels, and reducing the metal precursors on the surface of the sintered nanoparticles. Nanocatalyst-functionalized sintered bijels include catalytically active metal or metal oxide nanocatalysts on a surface of the sintered interfacially jammed surface-active nanoparticles. 1. A method of making a stabilized bijel , comprising:dispersing surface-active nanoparticles into a liquid mixture, the liquid mixture comprising a hydrophilic liquid, a hydrophobic liquid, and a solvent configured to mediate miscibility between the hydrophilic liquid and the hydrophobic liquid;dispersing one or more metal oxide precursors into the liquid mixture;contacting the liquid mixture with water, wherein the surface-active nanoparticles jam at an interface between the hydrophilic liquid and the hydrophobic liquid; andhydrolyzing and condensing the metal oxide precursors in a sol-gel reaction to form metal oxide bridges between the interfacially jammed surface-active nanoparticles, wherein the interfacially jammed surface-active nanoparticles are characterized as sintered.2. The method of claim 1 , further comprising:adding one or more metal salts to the stabilized bijel after hydrolyzing and condensing in the sol-gel reaction;adsorbing the one or more metal salts to a ...

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Номер записи: 75
23-07-2015 дата публикации

METHOD OF PREPARING A CATALYTIC STRUCTURE

Номер: US20150202598A1
Автор: Aref Hasen Mamakhe Mohammed, Becker-Christensen Jacob, Brummerstedt Iversen Bo, Fano Clausen Henrik, Friss Aarup David, Hales Jan, Hojslet Christensen Leif, Kallesøe Christian, LUND-OLESEN Torsten
Принадлежит:

A method of preparing a catalytic structure the method including the steps of: providing a solution of a precursor compound in a solvent at ambient conditions; providing a suspension of a support material having a specific surface area of at least 1 m2/g in a solvent at ambient conditions; mixing the solution of the precursor compound and the suspension of the support material; providing a reactive solvent in a supercritical or subcritical state; admixing the mixture of the solution of the precursor compound and the suspension of the support material in the supercritical or subcritical reactive solvent to form a reaction solution; injecting the reaction solution into a reactor tube via an inlet; allowing a reaction of the precursor compound in the supercritical or subcritical reactive solvent in the reactor tube to form the catalyst nanoparticles on the support material to provide the catalytic structure. 131-. (canceled)32. A method of preparing a catalytic structure having catalyst nanoparticles , the method comprising the steps of;providing a solution of a precursor compound in a solvent at ambient conditions;{'sup': '2', 'providing a suspension of a support material having a specific surface area of at least 1 m/g in a solvent at ambient conditions;'}optionally sonicating the suspension of the support material;mixing the solution of the precursor compound and the suspension of the support material;providing a reactive solvent in a supercritical or subcritical state;admixing the mixture of the solution of the precursor compound and the suspension of the support material in the supercritical or subcritical reactive solvent to form a reaction solution;injecting the reaction solution into a reactor tube via an inlet;allowing a reaction of the precursor compound in the supercritical or subcritical reactive solvent in the reactor tube to form the catalyst nanoparticles on the support material to provide the catalytic structure; andwithdrawing the catalytic structure ...

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Номер записи: 76
23-07-2015 дата публикации

MAGNESIUM STABILIZED ULTRA LOW SODA CRACKING CATALYSTS

Номер: US20150202602A1
Автор: Cheng Wu-Cheng, KUMAR Ranjit, Shu Yuying, Sutovich Kevin J., Wormsbecher Richard F., Ziebarth Michael S.
Принадлежит: W. R. GRACE & CO.-CONN.

A rare earth free, ultra low soda, particulate fluid catalytic cracking catalyst which comprises a reduced soda zeolite having fluid catalytic cracking ability under fluid catalytic cracking conditions, a magnesium salt, an inorganic binder, clay and optionally, a matrix material. The catalytic cracking catalyst is useful in a fluid catalytic cracking process to provide increased catalytic activity, and improved coke and hydrogen selectivity without the need to incorporate rare earth metals. 1. An ultra low soda fluid catalytic cracking catalyst having increased activity and improved selectivity for cracking a hydrocarbon feedstock to lower molecular weight products , the catalyst comprising a particulate composition comprising a zeolite having catalytic cracking activity under fluid catalytic cracking conditions , a magnesium salt , clay , an inorganic binder and optionally at least one matrix material , wherein the catalyst has a NaO content of less than 0.7 wt % NaO , on a zeolite basis , based on the total weight of the catalyst composition.2. The catalyst of wherein the zeolite is a faujasite zeolite.3. The catalyst of wherein the NaO content is less than 0.5 wt % NaO claim 1 , on a zeolite basis claim 1 , based on the total weight of the catalyst.4. The catalyst of wherein the amount of zeolite present in the catalyst ranges from about 10 wt % to about 75 wt % of the total catalyst composition.5. The catalyst of wherein the amount of zeolite present in the catalyst ranges from about 12 wt % to about 55 wt % of the total catalyst composition.6. The catalyst of wherein the binder is selected from the group consisting of silica claim 1 , alumina sol claim 1 , peptized alumina claim 1 , silica alumina and combinations thereof.7. The catalyst of wherein the binder is alumina sol.8. The catalyst of wherein the binder is an acid or base peptized alumina.9. The catalyst of wherein the binder comprises aluminum chlorohydrol.10. The catalyst of wherein the amount of ...

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Номер записи: 77
12-07-2018 дата публикации

ENGINEERING HIGH-PERFORMANCE PALLADIUM CORE MAGNESIUM OXIDE POROUS SHELL NANOCATALYSTS VIA HETEROGENEOUS GAS-PHASE SYNTHESIS

Номер: US20180193820A1
Автор: Cassidy Cathal, SINGH Vidya Dhar, Sowwan Mukhles Ibrahim
Принадлежит: OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION

A novel catalyst includes a plurality of nanoparticles, each nanoparticle including a core made of a catalytic metal and a porous shell surrounding the core, made of metal oxide, the porous shell preserving a catalytic function of the core and reducing reduction of the core and coalescence of the nanoparticles. 1. A catalyst , comprising a plurality of nanoparticles , each nanoparticle comprising:a core made of a catalytic metal; anda porous shell surrounding the core, made of metal oxide, the porous shell preserving a catalytic function of the core and reducing reduction of the core and coalescence of the nanoparticles.2. The catalyst according to claim 1 , wherein the catalytic metal is Pd claim 1 , and the porous shell is made of MgO.3. A catalyst claim 1 , comprising nanoparticles claim 1 , each nanoparticle consisting of:a core made of Pd; anda porous shell made of MgO, surrounding the core, a porosity of the porous shell being such that a catalytic function of Pd is preserved, and reduction of the core and coalescence of the nanoparticles are reduced.4. A method for manufacturing Pd core-MgO shell nanoparticles claim 1 , the method comprising:forming a super-saturated vapor of Mg and a super-saturated vapor of Pd by sputtering using an Mg target and a Pd target in a vacuumed aggregation chamber;transporting the super-saturated vapors of Pd and Mg to a vacuumed deposition chamber so that Pd nucleates and clusters first, followed by Mg nucleation and growth on the clustered Pd, surrounding the Pd cluster; andthereafter, exposing resulting the Pd cluster surrounded by the grown Mg to oxygen to oxidize said surrounding Mg, thereby forming nanoparticles on a substrate in the deposition chamber, each of the nanoparticles consisting of one or more of a core made of Pd and a porous shell made of MgO surrounding said one or more of the core.5. The method according to claim 4 , further comprising changing a sputtering power ratio for Pd and Mg so as to create the ...

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Номер записи: 78
30-07-2015 дата публикации

JOINED STRUCTURE COMPRISING CUBE- OR QUADRATIC PRISM-SHAPED ROCK SALT-TYPE OXIDE NANOPARTICLE AND FINE METAL PARTICLE, AND METHOD OF PRODUCING SAME

Номер: US20150209765A1
Автор: Hirasawa Makoto, Koga Kenji
Принадлежит: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

A method of continuously generating a joined structure: comprising a cube- or quadratic prism-shaped rock salt-type oxide nanoparticle and a metal nanoparticle, and having high crystallinity, in a gas phase, the method is characterized in that alloy nanoparticles composed of a noble metal and a base metal and having a particle size of 1 to 100 nm are generated in an inert gas; and brought into contact with a hot oxidizing gas, while the nanoparticles are heated at a high temperature together with the inert gas, to oxidize a base metal component in the alloy nanoparticles floating in the gas, and to simultaneously allow phase separation of the metal component, whereby the joined structure. 110-. (canceled)11. A method of producing a joined structure comprising a cube- or quadratic prism-shaped rock salt-type oxide nanoparticle and a metal nanoparticle , comprising the steps of:generating, in an inert gas, an alloy nanoparticle, which contains 0.1 to 90 at. % of a noble metal, with the balance being a base metal and inevitable impurities, and which has a particle size of 1 to 100 nm; andheating the alloy nanoparticle and bringing it into contact with a hot oxidizing gas, while the alloy nanoparticle is transported by the inert gas, to oxidize a floating alloy nanoparticle and to allow phase separation into a noble metal-containing metal component and an oxidized base metal component, thereby obtaining the joined structure.12. The method of producing the joined structure according to claim 11 , wherein the alloy nanoparticle further contains a doping element.13. The method of producing the joined structure according to claim 11 , wherein the joined structure comprising the rock salt-type oxide nanoparticle and the metal nanoparticle is obtained in a discrete state.14. The method of producing the joined structure according to claim 11 , wherein thermal oxidation treatment of the alloy nanoparticle is carried out in a gas phase claim 11 , at a temperature of 600° C. or ...

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Номер записи: 79
27-06-2019 дата публикации

CATALYST FOR CATALYZING FORMALDEHYDE OXIDATION AND THE PREPARATION AND USE OF THE SAME

Номер: US20190193055A1
Автор: CAI CHEN, Li Xiaoqiang, WANG Jiangliang
Принадлежит: Lumileds Holding B.V.

The present invention relates to a catalyst comprising manganese oxides wherein the manganese oxides comprise: MnO in an amount of 40-60 mole %, based on mole of Mn; MnOin an amount of 40-60 mole %, based on mole of Mn; and MnOin an amount of 1-10 mole %, based on mole of Mn. The present invention also relates to a method for preparing the catalysts and the use of the catalyst in an air purifier. The catalyst according to the present invention can effectively catalyze formaldehyde oxidation at ambient temperature so as to effectively remove indoor formaldehyde being present in relative low amounts. 1. A catalyst comprising manganese oxides wherein the manganese oxides comprise:MnO in an amount of 40-60 mole %, based on mole of Mn;{'sub': 2', '3, 'MnOin an amount of 40-60 mole %, based on mole of Mn; and'}{'sub': 3', '4, 'MnOin an amount of 1-10 mole %, based on mole of Mn, and wherein the total mole of Mn in the catalyst is 100 mole %.'}2. The catalyst as set forth in claim 1 , wherein the manganese oxides provide Mn and Mn in a mole ratio of (0.92-1.08):1.3. The catalyst as set forth in claim 1 , further comprising a carrier.4. The catalyst according to claim 3 , wherein the catalyst comprises 20-80 wt % of manganese oxides claim 3 , 20-70 wt % carrier and 0-50 wt % adhesive.5. The catalyst as set forth in claim 3 , wherein the carrier is selected from the group consisting of silica claim 3 , alumina claim 3 , active carbon claim 3 , zeolite and molecular sieves.6. The catalyst according to claim 3 , the catalyst further comprising an adhesive being selected from the group consisting of polyvinyl alcohol claim 3 , cellulose polyurethane claim 3 , epoxy and acrylates.7. The catalyst according to claim 3 , the catalyst further comprising an adhesive being selected from the group consisting of carboxymethyl cellulose claim 3 , carboxyethyl cellulose claim 3 , methyl cellulose claim 3 , hydroxymethyl cellulose claim 3 , hydroxyethyl cellulose and hydroxypropyl ...

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Номер записи: 80
27-06-2019 дата публикации

METHOD FOR PRODUCING EXHAUST GAS PURIFYING CATALYST AND EXHAUST GAS PURIFYING CATALYST

Номер: US20190193065A1
Автор: MIURA Masahide, SHIRAKAWA Shogo
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The present disclosure provides a method for producing an exhaust gas purifying catalyst, in which fine Rh—Pd particles exhibiting high catalytic activity are produced such that a variation in the Pd composition can be reduced. The present disclosure relates to a method for producing an exhaust gas purifying catalyst having fine composite metal particles containing Rh and Pd, comprising: preparing a starting material solution containing Rh and Pd, in which the atomic percentage of Pd to the total of Rh and Pd is 1 atomic % to 15 atomic %; and allowing the prepared starting material solution to react with a neutralizer by a super agitation reactor having a rotation number of 500 rpm or more, to generate fine composite metal particles. 1. A method for producing an exhaust gas purifying catalyst having fine composite metal particles containing Rh and Pd , comprising:preparing a starting material solution containing Rh and Pd, in which an atomic percentage of Pd to a total of Rh and Pd (=(number of Pd atoms/(total number of Rh and Pd atoms))×100) is 1 atomic % to 15 atomic %; andallowing the prepared starting material solution to react with a neutralizer by a super agitation reactor having a rotation number of 500 rpm or more, to generate fine composite metal particles.2. The method according to claim 1 , wherein the atomic percentage of Pd to the total of Rh and Pd is 2 atomic % to 5 atomic %.3. The method according to claim 1 , wherein the rotation number of the super agitation reactor is 1000 rpm or more.4. The method according to claim 2 , wherein the rotation number of the super agitation reactor is 1000 rpm or more.5. The method according to claim 1 , wherein the neutralizer is an organic base.6. The method according to claim 2 , wherein the neutralizer is an organic base.7. The method according to claim 3 , wherein the neutralizer is an organic base.8. The method according to claim 1 , wherein the starting material solution is a mixed solution of an Rh nitrate ...

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Номер записи: 81
21-07-2016 дата публикации

SUNLIGHT ACTIVE COMPOSITE PHOTOCATALYST FOR WATER PURIFICATION

Номер: US20160207030A1
Автор: CHANDRASEKARAN SIVARAMAN, INAYATULLAH MOHAMMAD ASLAM, ISMAIL IQBAL M.I., MUHAMMAD ABDUL HAMEED FATEH
Принадлежит:

The sunlight active composite photocatalyst for water purification includes ZnO (zinc oxide) and CoO(cobalt II, III oxide). The composite photocatalyst may, in the presence of natural sunlight, achieve complete mineralization of chemical and biological contaminants in water without leaving any hazardous by-products. The composite photocatalyst may be synthesized by a sol gel route or process. 1. A sunlight active composite photocatalyst for water purification , comprising:ZnO (zinc oxide); and{'sub': 3', '4, 'CoO(cobalt II, III oxide) dispersed on the surface of the ZnO.'}2. A method for producing a sunlight active composite photocatalyst for water purification , comprising the steps of:synthesizing ZnO;{'sub': '2', 'sup': '2+', 'forming a ZnO—Co—(OH)co-gel by mixing the ZnO with Co solution;'}{'sub': '2', 'heating the ZnO—Co—(OH)co-gel to form a slurry;'}drying the slurry to form a powder; andcalcining the powder.3. The method for producing a sunlight active composite photocatalyst according to claim 2 , further comprising the steps of:dissolving zinc acetate in deionized water to form a solution;hydrolyzing the solution with KOH to form a hydrated ZnO gel;heating the gel at 250° C. for 2 his;drying the gel to form ZnO powder; andcalcining the ZnO powder.4. The method for producing a sunlight active composite photocatalyst according to claim 2 , further comprising the step of heating the ZnO—Co—(OH)co-gel to a temperature of about 250° C.5. The method for producing a sunlight active composite photocatalyst according to claim 2 , wherein the slurry is dried in a hot air oven at a temperature of about 100° C.6. A method for purifying water claim 2 , comprising the step of submerging a photocatalyst in water claim 2 , the photocatalyst being a composite having:ZnO (zinc oxide); and{'sub': 3', '4, 'CoO(cobalt II, III oxide) dispersed on the surface of the ZnO.'} 1. Field of the InventionThe present invention relates to water purification, and particularly to a sunlight ...

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Номер записи: 82
18-06-2020 дата публикации

Mixed cerium- and zirconium-based oxide

Номер: US20200188885A1
Автор: Barry William Luke Southward, Julien Hernandez, Lama Itani
Принадлежит: Rhodia Operations SAS

The present invention relates to a mixed oxide of aluminium, of zirconium, of cerium, of lanthanum and optionally of at least one rare-earth metal other than cerium and lanthanum that makes it possible to prepare a catalyst that retains, after severe ageing, a good thermal stability and a good catalytic activity. The invention also relates to the process for preparing this mixed oxide and also to a process for treating exhaust gases from internal combustion engines using a catalyst prepared from this mixed oxide.

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Номер записи: 83
21-07-2016 дата публикации

ELONGATED TITANATE NANOTUBE, ITS SYNTHESIS METHOD, AND ITS USE

Номер: US20160207789A1
Автор: Chen Xiaodong, Chen Zhong, DONG Zhili, Tang Yuxin, Zhang Yanyan
Принадлежит:

The invention relates to a method of forming high aspect ratio titanate nanotubes. In particular, the formation of elongated nanotubes having lengths more than 10 μm involves a modified hydrothermal method. The method allows formation of an entangled network of the elongated nanotubes for use as free-standing membranes or powder form for use in various applications such as water treatment. The elongated nanotubes may also be used for forming electrodes for batteries. 1. A method of forming titanate nanotubes each having a length of at least 10 μm , the method comprising:heating a closed vessel containing a titanate precursor powder dispersed in a base, wherein content in the closed vessel is simultaneously stirred with a magnetic stirrer during the heating.2. The method of claim 1 , wherein the closed vessel is heated at 130° C. or below.3. The method of claim 2 , wherein the closed vessel is heated at between 80° C. and 130° C.4. The method of any one of to claim 2 , wherein the closed vessel is heated for 24 h or less.5. The method of claim 4 , wherein the closed vessel is heated for 16 h to 24 h.6. The method of any one of to claim 4 , wherein the closed vessel is heated in an oil bath or an apparatus adapted to provide a constant heating temperature.7. The method of claim 6 , wherein the closed vessel is heated in a silicon oil bath claim 6 , an oven claim 6 , or a furnace.8. The method of any one of to claim 6 , wherein the content in the closed vessel is stirred at 400 rpm or more.9. The method of claim 8 , wherein the content in the closed vessel is stirred at 400 rpm to 1 claim 8 ,000 rpm.10. The method of any one of to claim 8 , wherein concentration of the titanate precursor powder in the base is about 1:300 g/ml or more.11. The method of any one of to claim 8 , wherein concentration of the titanate precursor powder in the base is in the range of about 1:150 g/ml to about 1:50 g/ml.12. The method of any one of to claim 8 , further comprising collecting the ...

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Номер записи: 84
20-07-2017 дата публикации

Acid-Resistant Alloy Catalyst

Номер: US20170203283A1
Автор: Liu Jing, Prakash Indra, Qi Hongbin, Ren Haiyu, SHI YU
Принадлежит:

Disclosed is an acid-resisting alloy catalyst comprising nickel, one or more rare earth elements, stannum and aluminum. The acid-resistant alloy catalyst is low-cost and stable, and does not need a carrier, and can be stably used in continuous industrial production, thus achieving a low production cost. 1. An acid-resistant alloy catalyst comprising nickel , one or more rare earth elements , tin and aluminum.2. The acid-resistant alloy catalyst of comprising in parts by weight claim 1 , 10-90 parts nickel claim 1 , 1-5 parts rare earth element claim 1 , 1-60 parts tin and 5-9 parts aluminum.3. The acid-resistant alloy catalyst of claim 1 , further comprising tungsten.4. The acid-resistant alloy catalyst of comprising claim 3 , in parts by weight claim 3 , 10-90 parts nickel claim 3 , 1-5 parts rare earth element claim 3 , 1-60 parts tin claim 3 , 5-9 parts aluminum and 1-90 parts tungsten.5. The acid-resistant alloy catalyst of claim 1 , further comprising tungsten and molybdenum.6. The acid-resistant alloy catalyst of comprising claim 5 , in parts by weight claim 5 , 10-90 parts nickel claim 5 , 1-5 parts rare earth element claim 5 , 1-60 parts tin claim 5 , 5-9 parts aluminum claim 5 , 1-90 parts tungsten and 0.5-20 parts molybdenum.7. The acid-resistant alloy catalyst of claim 1 , further comprising tungsten claim 1 , molybdenum claim 1 , and one of boron or phosphorus.8. The acid-resistant alloy catalyst of comprising claim 7 , in parts by weight claim 7 , 10-90 parts nickel claim 7 , 1-5 parts rare earth element claim 7 , 1-60 parts tin claim 7 , 5-9 parts aluminum claim 7 , 1-90 parts tungsten claim 7 , 0.5-20 parts molybdenum claim 7 , and 0.01-5 parts boron or phosphorus.9. The acid-resistant alloy catalyst of claim 1 , wherein the rare earth element is selected from the group consisting of lanthanum (La) claim 1 , cerium (Ce) and samarium (Sm). The present invention relates to an alloy catalyst, in particular to an acid-resistant alloy catalyst.Due to their ...

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Номер записи: 85
27-07-2017 дата публикации

BIOCATALYTIC MICROCAPSULES FOR CATALYZING GAS CONVERSION

Номер: US20170209859A1
Автор: BAKER Sarah, Stolaroff Joshuah K., Ye Congwang
Принадлежит:

According to one embodiment, a microcapsule for selective catalysis of gases, the microcapsule comprising: a polymeric shell permeable to one or more target gases; and at least one biocatalyst disposed in an interior of the polymeric shell. In more embodiments, methods of forming such microcapsules include: emulsifying at least one biocatalyst in a polymer precursor mixture; emulsifying the polymer precursor mixture in an aqueous carrier solution; crosslinking one or more polymer precursors of the polymer precursor mixture to form a plurality of microcapsules each independently comprising: a polymeric shell permeable to one or more target gases; and at least one biocatalyst disposed in an interior of the polymeric shell. In further embodiments, corresponding methods of using the inventive microcapsules for catalyzing one or more target gases using include: exposing a plurality of the biocatalytic microcapsules to the one or more target gases. 1. A microcapsule for selective catalysis of gases , the microcapsule comprising:a polymeric shell permeable to one or more target gases; andat least one biocatalyst disposed in an interior of the polymeric shell.2. The microcapsule as recited in claim 1 , comprising a buffer disposed in the interior of the polymeric shell claim 1 , wherein the at least one biocatalyst is suspended in the buffer.3. The microcapsule as recited in claim 2 , wherein the buffer comprises a reducing agent.4. The microcapsule as recited in claim 1 , the at least one biocatalyst comprising one or more biocatalytic components selected from: one or more enzymes configured to catalyze the one or more target gases; one or more enzyme cofactors; one or more cell membrane fragments; one or more cytosolic cell components; and reconstituted whole cells.5. The microcapsule as recited in claim 1 , the one or more target gases each independently being a C1-C3 compound.6. The microcapsule as recited in claim 5 , the one or more target gases being selected from: ...

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Номер записи: 86
13-08-2015 дата публикации

METHOD FOR PREPARING METAL CATALYST FOR PREPARING CARBON NANOTUBES AND METHOD FOR PREPARING CARBON NANOTUBES USING THE SAME

Номер: US20150224479A1
Автор: Cho Shinje, CHOI Young Chul, KANG Hana, Kim Young Kwang, Park Su Young
Принадлежит: Hanwha Chemical Corporation

A method of preparing a metal catalyst for preparing carbon nanotubes and a method of preparing carbon nanotubes using same. In one embodiment, a deposition-precipitation method is used. The method includes preparing a support dispersion solution in which a solid support is dispersed in a solvent; and injecting a metal precursor salt solution and a pH adjusting solution into the dispersion solution to prepare a mixed solution and adsorbing metal oxides or metal hydroxides formed therefrom on a surface of the solid support to prepare a catalyst particle. 1. A method for preparing a metal catalyst for preparing carbon nanotubes , the method comprising:preparing a support dispersion solution in which a solid support is dispersed in a solvent; andinjecting a metal precursor salt solution and a pH adjusting solution into the dispersion solution to prepare a mixed solution and adsorbing metal oxide or metal hydroxide formed therefrom on a surface of the solid support to prepare a catalyst particle.2. The method of claim 1 , wherein in the metal precursor salt solution claim 1 , 30 to 100 parts by weight of a transition metal precursor is dissolved therein based on 100 parts by weight of a solvent.3. The method of claim 2 , wherein the transition metal precursor is one or at least two selected from a group consisting of metal salts including iron claim 2 , cobalt claim 2 , nickel claim 2 , yttrium claim 2 , molybdenum claim 2 , copper claim 2 , platinum claim 2 , palladium claim 2 , vanadium claim 2 , niobium claim 2 , tungsten claim 2 , chromium claim 2 , iridium claim 2 , and titanium.4. The method of claim 1 , wherein the pH adjusting solution contains 5 to 50 parts by weight of a pH adjusting agent based on 100 parts by weight of a solvent.5. The method of claim 4 , wherein the pH adjusting agent is one or a mixture of at least two selected from a group consisting of sodium carbonate claim 4 , sodium bicarbonate claim 4 , potassium carbonate claim 4 , potassium ...

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Номер записи: 87
02-08-2018 дата публикации

FERRITE-BASED CATALYST COMPOSITE, METHOD OF PREPARING THE SAME, AND METHOD OF PREPARING BUTADIENE USING THE SAME

Номер: US20180214854A1
Автор: CHA Kyong Yong, CHOI Dae Heung, HAN Jun Kyu, Han Sang Jin, Hwang Sun Hwan, HWANG Ye Seul, KANG Jun Han, KIM Seong Min, KO Dong Hyun, LEE Joo Hyuck, NAM Hyun Seok, SUH Myung Ji
Принадлежит:

The present invention relates to a ferrite-based catalyst composite, a method of preparing the same, and a method of preparing butadiene using the same. More particularly, the present invention provides a ferrite-based catalyst composite having a shape that allows effective dispersion of excess heat generated in a butadiene production process and prevention of catalyst damage and side reaction occurrence by reducing direct exposure of a catalyst to heat, a method of preparing the ferrite-based catalyst composite, and a method of preparing butadiene capable of lowering the temperature of a hot spot and reducing generation of Cox by allowing active sites of a catalyst to have a broad temperature gradient (profile) during oxidative dehydrogenation using the ferrite-based catalyst composite, and thus, providing improved process efficiency. 1. A ferrite-based catalyst composite , comprising 20 to 99% by weight of inert binder particles and 1 to 80% by weight of ferrite-based catalyst granules dispersed and inserted into the inert binder particles.2. The ferrite-based catalyst composite according to claim 1 , wherein the ferrite-based catalyst granules are derived from an oxide of a trivalent iron and a divalent metal claim 1 , wherein the divalent metal is at least one ferrite catalyst selected from the group consisting of zinc (Zn) claim 1 , magnesium (Mg) claim 1 , manganese (Mn) claim 1 , and cobalt (Co).3. The ferrite-based catalyst composite according to claim 1 , wherein an average particle diameter of the ferrite-based catalyst granules is 0.1 to 1.25 mm.4. The ferrite-based catalyst composite according to claim 1 , wherein the inert binder is one or more selected from the group consisting of an aluminum compound claim 1 , a silica compound claim 1 , and a silica aluminum compound.5. The ferrite-based catalyst composite according to claim 1 , wherein the catalyst composite has a spherical shape having a diameter of 1 to 20 mm and a circular or irregular cross ...

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Номер записи: 88
20-08-2015 дата публикации

SUPPORTED GOLD NANOPARTICLE CATALYST AND METHOD FOR PRODUCING SAME

Номер: US20150231610A1
Автор: Kiuchi Masato, Koga Kenji, Sakurai Hiroaki
Принадлежит: National Institute of Advanced Industrial Science and

The main problem addressed by the present invention is to provide a supported gold nanoparticle catalyst and having high catalytic activity. The above-mentioned problem can be solved by a supported catalyst comprising: a carrier having a reducing power; and gold nanoparticle with an average particle diameter of 100 nm or less, and preferably with an average particle diameters of 5 nm or less supported on the carrier. The present invention also provides a method for producing the supported catalyst. 1. A supported catalyst comprising: a carrier having a reducing power; and gold nanoparticles with an average particle size of 100 nm or less supported on the carrier.2. The supported catalyst according to claim 1 , wherein the gold nanoparticles have an average particle size of 10 nm or less.3. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is a porous material.4. The supported catalyst according to claim 2 , wherein the carrier having a reducing power is a porous material.5. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is a carbon material or a metal oxide.6. The supported catalyst according to claim 2 , wherein the carrier having a reducing power is a carbon material or a metal oxide.7. The supported catalyst according to claim 3 , wherein the carrier having a reducing power is a carbon material or a metal oxide.8. The supported catalyst according to claim 4 , wherein the carrier having a reducing power is a carbon material or a metal oxide.9. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is at least one selected from the group consisting of powdered activated carbon claim 1 , fibrous activated carbon claim 1 , titanium oxide claim 1 , cobalt oxide claim 1 , and manganese oxide.10. A method for producing a supported catalyst comprising supported gold nanoparticles with an average particle size of 100 nm or less claim 1 , the method ...

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Номер записи: 89
19-08-2021 дата публикации

SEGREGATION INDUCED CORE-SHELL STRUCTURE

Номер: US20210252487A1
Автор: KRUMDICK Gregory K., PUPEK Krzysztof, Stamenkovic Vojislav, Wang Rongyue
Принадлежит: UCHICAGO ARGONNE, LLC

A process for synthesis of PtNi high surface area core/shell particles. The processing including formation of PtNi nanoparticles, exposure of the PtNi nanoparticles to oxygen to form a nickel oxide coating on the nanoparticles at the same time the segregation of Ni to surface induces a Pt-skin with PtNi core structure, removal of the nickel oxide coating to form PtNi core/Pt shell (or Pt-skin) structure. 1. A method of synthesizing Pt shell PtNi core nanoparticle comprising the steps of:forming a reaction mixture comprising a nickel precursor, a reducing agent, and a surfactant comprising one part oleic acid to two parts oleylamine, a platinum precursor, and a polar solvent;reacting the reaction mixture at between 195° C. and 205° C. for at least 10 minutes forming a PtNi nanoparticle solution;isolating PtNi nanoparticles from the PtNI nanoparticle solution; andexposing the PtNi nanoparticles to oxygen;forming nickel oxide by reaction of nickel of the PtNi nanoparticles with the oxygen;removing the nickel oxide from at a portion of the PtNi nanoparticles.2. The method of claim 1 , wherein isolation of the PtNi nanoparticles comprisessonicating the PtNi nanoparticle solution with substrate in chloroform solution,adding hexane to the sonicated chloroform solution,precipitating PtNi nanoparticles, andcollecting the PtNi nanoparticles by filtration.3. The method of claim 1 , wherein exposing the PtNi nanoparticles comprises exposure at a temperature of 150° C. to 400° C.4. The method of claim 3 , wherein exposing the PtNi nanoparticles comprises exposure at a temperature of 150° C. to 300° C.5. The method of claim 3 , wherein the exposing the PtNi nanoparticles is for 1 to 20 hours.6. The method of claim 1 , wherein removing the nickel oxide is by acid leaching.7. The method of claim 6 , wherein the acid leaching is by exposure of an equal volume of acid to nanoparticle.8. The method of claim 6 , wherein the acid leaching is by exposure to HClO9. A method of ...

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Номер записи: 90
18-07-2019 дата публикации

CATALYST PRE-CONTACT DEVICE FOR CONTINUOUS POLYMERIZATION OF OLEFINS AND METHOD FOR CATALYST PRE-CONTACT

Номер: US20190218314A1
Автор: Liu Yuexiang, Xia Xianzhi, Zhang Tianyi, Zhao Jin
Принадлежит:

Disclosed is a catalyst pre-contact method for the continuous polymerization of an olefin, wherein a primary catalyst, a co-catalyst and, optionally, an external electron donor are mixed and then undergo a pre-contact reaction, with the pre-contact reaction temperature being −30° C. to 35° C. and adjustable, and the pre-contact reaction time being 0.5 min to 10 min and adjustable, and the pre-contacted catalyst is brought into a catalyst prepolymerization system and then into a catalyst polymerization system, or is directly brought into the catalyst polymerization system. Further disclosed is a catalyst pre-contact device for the continuous polymerization of an olefin, which can adjust the pre-contact time and pre-contact temperature of the catalyst so that the performance of the catalyst achieves a better level according to the process. 1. A catalyst pre-contact method for continuous polymerization of olefins , characterized in that a main catalyst , a cocatalyst and an optional external electron donor are combined to conduct a pre-contact reaction , with a pre-contact temperature being in a range of from −30° C. to 40° C. and adjustable , a pre-contact time being in a range of from 0.5 min to 70 min and adjustable , and a pre-contacted catalyst entering pre-polymerization system and then catalyst polymerization system or , alternatively , directly entering polymerization system , depending on polymerization process requirements.2. The catalyst pre-contact method of claim 1 , wherein the polymerization system utilizes a liquid phase bulk polymerization process claim 1 , the pre-contact time is in a range of from 1 min to 20 min claim 1 , and the pre-contact temperature is in a range of from −25° C. to 15° C.3. The catalyst pre-contact method of claim 1 , wherein the polymerization system utilizes a gas phase polymerization process claim 1 , the pre-contact time is in a range of from 1 min to 20 min claim 1 , and the pre-contact temperature is in a range of from −30 ...

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Номер записи: 91
03-09-2015 дата публикации

CATALYST FOR HYDROCARBON REFORMING, METHOD OF MANUFACTURING THE SAME, AND METHOD OF MANUFACTURING SYNTHESIS GAS

Номер: US20150246342A1
Автор: Higashimura Hideyuki, NAGAOKA Katsutoshi, Nagashima Kazuro, Sato Katsutoshi
Принадлежит:

There is provided a catalyst for hydrocarbon reforming having a high deposition suppressing effect with respect to a carbonaceous material on the catalyst surface even in a case where a reforming material including carbon dioxide, in particular, formed of only carbon dioxide is used in a reforming reaction, a method of manufacturing the same, and a method of manufacturing a synthesis gas using the catalyst. Specifically, there is provided a catalyst for hydrocarbon reforming which is a catalyst for reforming used for reforming hydrocarbons by a reaction of the hydrocarbons and a reforming material including carbon dioxide in which at least one type of metal particles selected from cobalt particles and nickel particles is supported on a support formed of magnesia in which an aluminum-containing component is segregated on the surface; and a method of manufacturing a synthesis gas in which using the catalyst for hydrocarbon reforming, a synthesis gas including carbon monoxide and hydrogen is obtained from a reforming material including hydrocarbons and carbon dioxide. 1. A catalyst for hydrocarbon reforming , which is used for reforming hydrocarbons by a reaction of the hydrocarbons and a reforming material including carbon dioxide ,wherein at least one type of metal particles selected from cobalt particles and nickel particles is supported on a support formed of magnesia in which an aluminum-containing component is segregated on the surface.2. The catalyst for hydrocarbon reforming according to claim 1 ,wherein the amount of the metal particles is 0.001% by mass to 20% by mass with respect to the support.3. The catalyst for hydrocarbon reforming according to claim 1 ,wherein the amount of aluminum in the support is 0.001% by mass to 10% by mass.4. The catalyst for hydrocarbon reforming according to claim 1 ,wherein the magnesia before the metal particles are supported is in the form of a powder.5. A method of manufacturing the catalyst for hydrocarbon reforming ...

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Номер записи: 92
26-08-2021 дата публикации

Method for synthesizing high-purity carbon nanocoils based on composite catalyst formed by multiple small-sized catalyst particles

Номер: US20210261418A1
Автор: Lujun Pan, Yongpeng Zhao
Принадлежит: Dalian University of Technology

The present invention provides a method for synthesizing high-purity carbon nanocoils based on a composite catalyst formed by multiple small-sized catalyst particles, and belongs to the technical field of material preparation. In the present invention, Fe—Sn—O nanoparticles with sizes of less than 100 nm prepared by chemical or physical methods are used as catalysts, and stacked and made into contact in a simple manner, and then carbon nanocoils are efficiently synthesized from the prepared catalysts by a thermal chemical vapor deposition method. The method provided by the present invention has simple process and low cost. In addition, the preset invention discloses a novel carbon nanocoil growth mechanism, which makes the prepared catalyst for carbon nanocoil growth more efficient and easier for industrialized mass production.

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Номер записи: 93
24-08-2017 дата публикации

PROCESS FOR SYNTHESIZING A METAL-DOPED ALUMINOGALLATE NANOCOMPOSITE AND METHODS OF USE THEREOF

Номер: US20170239648A1
Автор: Khalid Alhooshani, Zahir Md Hasan
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite. 1: A process for producing a finely divided metal-doped aluminogallate nanocomposite comprising: [{'sub': 2', '3, 'GaO;'}, {'sub': 2', '3, 'AlO; and'}, 'at least one metal oxide dopant comprising a metal selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Au, Pd, Pt, Ru, Rh, In, Ir, Tl, Ge, and Sn; and, 'mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite synthesized by a process selected from the group consisting of co-precipitation, sol-gel, and hydrothermal to form a bulk metal-doped aluminogallate slurry, wherein the bulk metal-doped aluminogallate nanocomposite comprisesatomizing the bulk metal-doped aluminogallate slurry using a collision to produce the finely divided metal-doped aluminogallate nanocomposite;wherein the carrier solvent is at least one selected from the group consisting of deionized water, ethanol, butanol, isopropyl alcohol, diacetone alcohol, diglycol, triglycol, acetone, methyl ethyl ketone, ethyl acetate, butyl acetate, toluene, and xylene.2: The process of claim 1 , wherein the bulk metal-doped aluminogallate is synthesized by a hydrothermal process comprising:adding a precipitating agent to an aqueous solution comprising a gallium salt, an aluminum salt, and a metal dopant salt to form a metal-doped aluminogallate suspension with a pH of 8-12; andheating the metal-doped aluminogallate suspension to a hydrothermal reaction temperature ...

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Номер записи: 94
30-08-2018 дата публикации

METHOD FOR PREPARING ACETIC ACID BY CARBONYLATION OF METHANOL

Номер: US20180244599A1
Автор: LIU Hongchao, Liu Yong, Liu Zhongmin, NI Youming, Shi Lei, ZHU Wenliang
Принадлежит: Dalian Institute of Chemical Physics, Chinese Academy of Science

The present invention provides a method for preparing acetic acid by carbonylation of methanol, which comprises: passing a raw material containing methanol, carbon monoxide and water through a reaction region loaded with a catalyst containing an acidic molecular sieve with an adsorbed organic amine, and carrying out a reaction under the following conditions to prepare acetic acid. The method in the present invention offers high acetic acid selectivity and good catalyst stability. The catalyst in the present invention does not contain noble metals such as rhodium or iridium, and does not need additional agent containing iodine, and thus does not generate a strong corrosive hydroiodic acid and the like. 1. A method for preparing acetic acid by carbonylation of methanol , which comprises: passing a raw material containing methanol , carbon monoxide and water through a reaction region loaded with a catalyst containing an acidic molecular sieve with an adsorbed organic amine , and carrying out a reaction under the following conditions to prepare acetic acid;wherein the acidic molecular sieve is one or two molecular sieves selected from the group consisting of molecular sieves with MOR framework and molecular sieves with FER framework;{'sub': '1-3', 'the organic amine is one or more organic amines selected from the group consisting of pyridine, phenylamine, cyclohexylamine, piperidine, substituted pyridines with one or more substituents, substituted phenylamines with one or more substituents, substituted cyclohexylamines with one or more substituents and substituted piperidines with one or more substituents; and the substituents are independently selected from halogen or Calkyl group;'}the reaction region is constituted by one or more reactors which are connected in series and/or in parallel;{'sup': −1', '−1, 'the reaction conditions are listed as follows: the reaction temperature is in a range from 150° C. to 350° C.; and the reaction pressure is in a range from 0.5 MPa ...

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Номер записи: 95
31-08-2017 дата публикации

ONE-STEP METHOD FOR THE SYNTHESIS OF HIGH SILICA CONTENT ZEOLITES IN ORGANIC-FREE MEDIA

Номер: US20170247261A1
Автор: Conato Marlon T., OLEKSIAK Matthew D., RIMER Jeffrey D.
Принадлежит: UNIVERSITY OF HOUSTON SYSTEM

In an embodiment, the present disclosure pertains to a composition comprising a zeolite with high silica content. In some embodiments, the silica to aluminum ratio (SAR) for the zeolite is 2:1. In some embodiments, the zeolite comprises Zeolite HOU-2 (LTA-type). In some embodiments, the silica to aluminum ratio (SAR) for the zeolite is >3. In some embodiments, the zeolite comprises Zeolite HOU-3 (FAU type). In some embodiments, the zeolite is synthesized using a one-step method. In some embodiments, the zeolite is synthesized without the use of an organic structure-directing agent (OSDA). In some embodiments, the zeolite is synthesized without the use of post-synthesis dealumination. In some embodiments, the zeolite is synthesized without the use crystal seeds. In some embodiments, the zeolite is used in commercial ion exchange. In some embodiments, the zeolite is used for catalysis reaction. In some embodiments, the zeolite is highly thermostable. 1. A one-step organic-free method for the synthesis of LTA-type zeolites comprising:preparing a zeolite growth solution comprising an alumina source and a hydroxide source;adding a silica source to the zeolite growth solution to form an initial gel mixture;crystallization of the initial gel mixture;collecting products formed; andisolating the zeolites formed from the crystalline products, wherein the synthesis of the zeolites is without the use of organic structure-directing agents, wherein the synthesis of the zeolite is without the use of crystal seeds, wherein the silicon-to-hydroxide ratio in the initial gel mixture is greater than about 1 and less than about 1.5, and wherein the synthesized zeolite has a silicon-to-aluminum ratio of at least 2:1.2. The method of further comprising adding a cation as an extra-framework counterion in the zeolite growth solution.3. The method of claim 2 , wherein the extra-framework cation is an alkali metal.4. The method of claim 2 , wherein the extra-framework cation is Na.5. The ...

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Номер записи: 96
17-09-2015 дата публикации

Methods and systems for producing alcohols and amides from carbon dioxide

Номер: US20150259268A1
Автор: AROCKIADOSS Thevasahayam
Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Methods and systems for producing butanol from carbon dioxide, and water are disclosed. In one embodiment, a method of producing butanol from carbon dioxide and water involves contacting carbon dioxide with a reaction mixture containing water and a catalyst, and heating the carbon dioxide and reaction mixture by fluctuating magnetic field. In some embodiments, the catalyst used may be FeAl 2 O 3 .

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Номер записи: 97
15-09-2016 дата публикации

CATALYST FOR ENHANCING LIQUID YIELD IN THERMAL COKING PROCESS

Номер: US20160263556A1
Автор: CHIDAMBARAM Velusamy, Kasliwal Pankaj Kumar, Kumar Brijesh, Malhotra Ravinder Kumar, PRABHU Kuvettu Mohan, PULIKOTTIL Alex Cheru, Rajagopal Santanam, Sarkar Biswanath
Принадлежит:

The present invention provides a catalyst product comprising of (a) porous acidic clay material and (b) binder and matrix to shape the catalyst to either microspheres, pellet, tablet, extrudate and ring and suitable for enhancing the crack-ability of heavy feed material derived from atmospheric and vacuum distillation bottoms; FCC bottoms, coker bottoms and hydrocracker bottoms. The invention particularly relates to a catalyst cum heat supply product suitable for thermal coking process either in a batch mode or continuous coking process. 1. A catalyst for cracking heavy hydrocarbons , wherein the catalyst comprises a clay material , binder and matrix , wherein the catalyst is having surface area between 100-200 m/gm , ABD of 0.7 to 1 g/cc and average pore diameter in the range of 630 to 680 A°.2. The catalyst according to claim 1 , wherein the clay is selected from kaolinite claim 1 , bentonite claim 1 , illite claim 1 , vermiculite claim 1 , smectite claim 1 , montmorillonite claim 1 , sepiolite and hectorite.31. The catalyst according to claim of claim 1 , wherein binder is an alumina or a silica material.43. The catalyst according to claim of claim 1 , wherein the alumina selected from alumina gel claim 1 , pseudoboehmite claim 1 , aluminum trihydrate claim 1 , eta claim 1 , theta and gamma.53. The catalyst according to claim of claim 1 , wherein the silica is a colloidal silica.6. The catalyst according to claim 1 , where in alumina is present from 40 to 70 wt % and silica is present from 20 to 50 wt %.7. The catalyst according to claim 1 , wherein the catalyst is having shape selected from microspheroidal claim 1 , pellet claim 1 , extrudate claim 1 , tablet claim 1 , ring and irregular having from 20 to 200 micron size.8. A process of preparing the catalyst according to claim 1 , wherein the process comprises the steps of:a) optionally, calcining a clay;b) reacting an alumina and silica with an acid to obtain an alumina slurry;c) mixing the alumina slurry of ...

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Номер записи: 98
07-10-2021 дата публикации

Catalytic Microgelators for Decoupled Control of Gelation Rate and Rigidity of Biological Gels

Номер: US20210308064A1
Автор: HONG Yu-Tong, KONG Hyunjoon, SEO Yongbeom
Принадлежит: The Board of Trustees of the University of Illinois

Provided herein are stimulus-responsive polymer microgelator particles that can activate fibrin fiber formation from their surfaces by actively ejecting thrombin to form an interconnected fibrin network with an increased elastic modulus and desirable microstructure. The use of the microgelators enables the decoupling of gelation rate and gel rigidity.

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Номер записи: 99
15-08-2019 дата публикации

AN IMPROVED PROCESS FOR THE PREPARATION OF BIMETALLIC CORE-SHELL NANOPARTICLES AND THEIR CATALYTIC APPLICATIONS

Номер: US20190247918A1
Автор: BHARATHAN Vysakh Alengattil, Prabhakaran Vinod Chathakudath
Принадлежит:

The present invention disclosed an improved process for the preparation of bimetallic core-shell nanoparticles by using facile aqueous phase synthesis strategy and their application in catalysis such as selective hydrogenation of alkynes into alkenes or alkanes and CO hydrogenation to hydrocarbons. 1. An improved process for the preparation of bimetallic core-shell nanoparticles comprising the steps of:a) Adding a solution of reducing agent in water to an aqueous solution of gold precursor with constant stirring to afford gold nanoparticles followed by stirring for 10 to 15 minutes;b) Adding a transition metal precursor to the solution of step (a) followed by addition of a capping agent and heating at temperature in the range of 60 to 70° C.; andc) Adding a mixture of hydrazine hydrate and sodium hydroxide to the solution of step (b) to afford the bimetallic core-shell nanoparticles, whereina core of the core-shell nanoparticles is made up of the gold,a shell of the core-shell nanoparticles is made up of the transition metal, and said process is carried in an aqueous medium.2. The process as claimed in claim 1 , wherein said reducing agent is selected from the group consisting of sodium borohydride claim 1 , ascorbic acid claim 1 , tri sodium citrate and hydrazine.3. The process as claimed in claim 1 , wherein said transition metal precursor is selected from the group consisting of nickel claim 1 , cobalt claim 1 , copper and iron.4. The process as claimed in claim 1 , wherein said capping agent is selected from the group consisting of cetyltrimethylammoniumbromide (CTAB) claim 1 , cetyltrimethylammonium chloride (CTAC) claim 1 , Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) claim 1 , PEG-PPG-PEG claim 1 , poly vinyl pyrollidone (PVP) and trisodiumcitrate.5. The process as claimed in claim 1 , wherein said bimetallic core-shell nanoparticles are used for selective hydrogenation of alkynes into alkenes or alkanes.6. The process as ...

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Номер записи: 100