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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 3687. Отображено 100.
17-05-2012 дата публикации

Method for producing alkoxy-substituted 1,2-bissilylethanes

Номер: US20120123143A1
Автор: Alfred Popp, Margit Steiner-Langlechner
Принадлежит: Wacker Chemie AG

The invention relates to a method for producing alkoxy-substituted 1,2-bissilylethanes of the general formula 1 (R 1 O) n R 2 (3-n) Si—CH 2 —CH 2 —SiR 2 (3-n) (OR 1 ) n   (1), which comprises reacting, in a first step, a mixture containing compounds of the general formulae 2 and 3 Cl n R 2 (3-n) Si—CH 2 —CH 2 —SiR 2 (3-n) Cl n   (2) Cl n R 2 (3-n) Si—CH═CH—SiR 2 (3-n) Cl n   (3) with an alcohol of the general formula 4 R 1 OH  (4) and, in a second step, subjecting the resultant mixture which contains compounds of the general formula 1 and compounds of the general formula 5 (R 1 O) n R 2 (3-n) Si—CH═CH—SiR 2 (3-n) (OR 1 ) n   (5) to reductive conditions such that the compound of the general formula 5 is converted into a compound of the general formula 1, wherein R 1 and R 2 are monovalent, unsubstituted or halogen-substituted hydrocarbon radicals having 1 to 16 carbon atoms and n is the value 1, 2 or 3.

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Номер записи: 1
28-03-2013 дата публикации

SINTERED CUBIC BORON NITRIDE COMPACT AND SINTERED CUBIC BORON NITRIDE COMPACT TOOL

Номер: US20130079215A1
Автор: Abe Machiko, Kukino Satoru, Okamura Katsumi
Принадлежит: Sumitomo Electric Hardmetal Corp.

It is an object of the present invention to provide a sintered cBN compact having excellent wear resistance and fracture resistance even in machining centrifugally cast iron having a property of being difficult to machine, and to provide a sintered cBN compact tool. A sintered cBN compact of the present invention contains 20% by volume or more and 65% by volume or less of cBN and, as a binder, 34% by volume or more and less than 80% by volume of AlO, at least one selected from the group consisting of nitrides, carbides, carbonitrides, borides, and boronitrides of Zr and solid solutions thereof (hereinafter, referred to as “X”), and ZrO, the total amount of X and ZrObeing 1.0% by volume or more and 6.0% by volume or less, the volume ratio of ZrOto AlO, ZrO/AlO, being 0.010 or more and less than 0.100, in which the ratio I(101)/I(110) is 0.1 or more and 3 or less, where I(101) is the intensity of the (101) plane of tetragonal ZrOand I(110) is the intensity of the (110) plane of αAlOamong X-ray diffraction peaks of the sintered cBN compact. 1. A sintered cBN compact , containing:20% by volume or more and 65% by volume or less of cBN relative to the whole sintered compact; and{'sub': 2', '3, 'as a binder, 34% by volume or more and less than 80% by volume of AlOrelative to the whole sintered compact, at least one selected from the group consisting of nitrides, carbides, carbonitrides, borides, and boronitrides of Zr and solid solutions thereof (hereinafter, referred to as “X”); and'}{'sub': '2', 'ZrO,'}{'sub': 2', '2', '2', '3', '2', '2', '3, 'wherein the total amount of X and ZrObeing 1.0% by volume or more and 6.0% by volume or less relative to the whole sintered compact, the volume ratio of ZrOto AlO, ZrO/AlO, being 0.010 or more and less than 0.100; and'}{'sub': tetragonal ZrO2', 'αAl2O3', 'tetragonal ZrO2', '2', 'αAl2O3', '2', '3, 'wherein the ratio I(101)/I(110) is 0.1 or more and 3 or less, where I(101) is the intensity of the (101) plane of tetragonal ZrOand I( ...

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Номер записи: 2
30-05-2013 дата публикации

PROCESS FOR DEHYDRATION AND ISOMERIZATION OF C4 ALCOHOLS USING AN AMORPHOUS SOLID WITH SUITABLE POROSITY

Номер: US20130137908A1
Автор: COUPARD Vincent, Maury Sylvie, SURLA Karine
Принадлежит: IFP ENERGIES NOUVELLES

The present invention relates to a method of producing C4 olefins, from a feed of C4 monohydric alcohol, in which a reaction of dehydration of the monohydric alcohol to at least one olefin, and a reaction of skeletal isomerization of at least one of the olefins produced in one and the same reaction vessel, are carried out in the presence of an alumina-based catalyst with adapted porosity. 1. Method of producing C4 olefins , by passing a feed of C4 monohydric alcohol over a catalyst , in which a reaction of dehydration of the monohydric alcohol to at least one olefin , and a reaction of skeletal isomerization of at least one of the olefins produced in one and the same reaction vessel , are carried out , said method being characterized in that the reactions of dehydration and of isomerization are carried out in the presence of the catalyst , optionally containing a promoter , said catalyst being based on alumina , free from halogens and having a pore distribution such that the volume of pores with diameter greater than 0.1 μm measured by mercury porosimetry according to standard ASTM D4284-83 is comprised between 10 mL/100 g and 30 mL/100 g.2. Method according to claim 1 , in which the catalyst comprises at least 50 wt. % of gamma alumina.3. Method according to claim 1 , in which said catalyst is in the form of spheroids claim 1 , preferably having an average diameter comprised between 1 and 2.5 mm.4. Method according to claim 1 , in which said catalyst has a surface area Scomprised between 180 and 270 m/g.5. Method according to claim 1 , in which said catalyst has a total pore volume defined by analysis using mercury porosimetry comprised between 0.45 and 0.9 ml/g6. Method according to claim 1 , in which a promoter selected from the group comprising metals of groups 4 claim 1 , 5 claim 1 , 6 and/or 12 is added to said catalyst.7. Method according to claim 6 , in which the promoter is selected from the group comprising Ti claim 6 , V claim 6 , W.8. Method according to ...

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Номер записи: 3
06-06-2013 дата публикации

METHOD AND SYSTEM FOR REDUCING INDUSTRIAL EMISSIONS

Номер: US20130142716A1
Автор: Hooper Barry Neil
Принадлежит: REDEEM CCS PTY LTD

The invention relates to a method adapted for integration with a carbonate absorption/stripping process for removal of carbon dioxide, the method and system including the steps of: converting a source of alkali from a first industry to a non-carbonate alkali; feeding the non-carbonate alkali as makeup to a carbonate absorption system for stripping carbon dioxide from emissions from a second industry; recovering an output from the system for stripping carbon dioxide, and in the process of conversion of the alkali from the first industry, utilising energy from the second industry. 1. A method adapted for integration with a carbonate absorption/stripping process for removal of carbon dioxide , the method and system including the steps of:converting a source of alkali from a first industry to a non-carbonate alkali;feeding the non-carbonate alkali as makeup to a carbonate absorption system for stripping carbon dioxide from emissions from a second industry;recovering an output from the system for stripping carbon dioxide, and in the process of conversion of the alkali from the first industry, utilising energy from the second industry.2. The method according to wherein the source of the alkali is potassium chloride and the non-carbonate alkali is potassium hydroxide.3. The method according to wherein outputs are chosen from the group comprising potassium sulphate claim 1 , potassium nitrate claim 1 , chlorine gas claim 1 , hydrogen and hydrogen chloride and combinations thereof.4. A method adapted for integration with a carbonate absorption process for stripping carbon dioxide claim 1 , the method including the steps of:converting a source of potassium chloride from a first industry to potassium hydroxide, chlorine, hydrogen and hydrogen chloride; recovering at least some of one or more of the chlorine, hydrogen and hydrogen chloride;feeding the potassium hydroxide as makeup to a carbonate absorption system for stripping carbon dioxide from emissions from a second ...

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Номер записи: 4
04-07-2013 дата публикации

Organic templated nanometal oxyhydroxide

Номер: US20130168320A1
Автор: Anshup, Chaudhary Amrita, Mohan Udhaya Sankar, Mundampra Maliyekkal Shihabudheen, THALAPPIL Pradeep
Принадлежит: INDIAN INSTITUTES OF TECHNOLOGY

Disclosed are granular composites comprising a biopolymer and one or more nanometal-oxyhydroxide/hydroxide/oxide particles, along with methods for the preparation and use thereof.

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Номер записи: 5
18-07-2013 дата публикации

Process for obtaining nanocrystalline corundum from natural or synthetic alums

Номер: US20130183527A1
Автор: Joaquín Bastida Cuairán, Maria del Mar Urquila Casas, Pablo Rafael Pardo Ibañez, Rafael Ibanez Puchades
Принадлежит: UNIVERSITAT DE VALENCIA

The present invention relates to a process for obtaining nanocrystalline corundum, characterised in that it comprises a first step of thermal treatment of the raw material used in the process at standard pressure, to a temperature greater than that of the last endothermic accident of the differential thermal analysis record of the raw material, performed to 925° C.; and a second step of fast cooling from the maximum temperature reached in the preceding step to room temperature. Moreover, the present invention relates to the nanocrystalline corundum obtainable from the process described, as well as to multiple uses of said corundum. Furthermore, this material may be disaggregated, for example by means of high-energy grinding, to produce a fine aggregate that may be used as an abrasive or as a functional load in plastic polymers or other types of materials.

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Номер записи: 6
05-09-2013 дата публикации

CATALYST MANUFACTURING METHOD

Номер: US20130230721A1
Автор: Coupland Duncan Roy
Принадлежит: JOHNSON MATTHEY PLC

A method for producing a catalyst using an additive layer method includes: 1. A method for producing a particulate catalyst with a cross-sectional size in the range 1-50 mm and an aspect ratio in the range 0.5 to 5 using an additive layer method comprising:(i) forming a layer of a powdered catalyst or catalyst support material,(ii) binding or fusing the powder in said layer according to a predetermined pattern,(iii) repeating (i) and (ii) layer upon layer to form a shaped unit, and(iv) optionally applying a catalytic material to said shaped unit.2. A method according to wherein the powdered material is a catalyst powder.3. (canceled)4. A method according to or wherein the catalyst powder comprises one or more metals or metal compounds containing metals selected from the group consisting of Na claim 1 , K claim 1 , Mg claim 1 , Ca claim 1 , Ba claim 1 , Al claim 1 , Si claim 1 , Ti claim 1 , V claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Zn claim 1 , Y claim 1 , Zr claim 1 , Nb claim 1 , Mo claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Ag claim 1 , Sn claim 1 , Sb claim 1 , La claim 1 , Hf claim 1 , W claim 1 , Re claim 1 , Ir claim 1 , Pt claim 1 , Au claim 1 , Pb claim 1 , or Ce.510.-. (canceled)11. A method according to wherein the powdered material is a catalyst support powder and the method comprises applying a catalytic material to said shaped unit.1215.-. (canceled)16. A method according to wherein the catalyst support powder comprises an alumina claim 11 , metal-aluminate claim 11 , silica claim 11 , alumino-silicate claim 11 , titania claim 11 , zirconia claim 11 , zinc oxide claim 11 , or a mixture thereof.1720.-. (canceled)21. A method according to wherein the catalytic material applied to the shaped unit comprises a metal claim 11 , metal compound or a zeolite.22. (canceled)23. A method according to wherein the metal claim 21 , metal compound or zeolite is applied to the shaped unit from a solution or ...

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Номер записи: 7
19-09-2013 дата публикации

GAS SENSOR ELEMENT AND ITS MANUFACTURING METHOD

Номер: US20130240354A1
Автор: FUJII Namitsugu, KAJIYAMA Norikazu, SAITOU Masami
Принадлежит: Denso Corporation

A gas sensor element includes a basal body, at least one solid electrolyte portion and a pair of electrodes. The basal body has a bottomed tubular shape and is made of an electrically insulative ceramic material. The basal body has a side wall and a bottom wall. The at least one solid electrolyte portion is formed in the bottom wall or the side wall of the basal body. The pair of electrodes are opposed to each other with the at least one solid electrolyte portion interposed therebetween. The difference in surface level between the basal body and the at least one solid electrolyte portion at a boundary therebetween is less than or equal to 30 μm. 1. A gas sensor element comprising:a basal body that has a bottomed tubular shape and is made of an electrically insulative ceramic material, the basal body having a side wall and a bottom wall;at least one solid electrolyte portion formed in the bottom wall or the side wall of the basal body; anda pair of electrodes that are opposed to each other with the at least one solid electrolyte portion interposed therebetween,whereina difference in surface level between the basal body and the at least one solid electrolyte portion at a boundary therebetween is less than or equal to 3 μm.2. The gas sensor element as set forth in claim 1 , wherein the difference in surface level between the basal body and the at least one solid electrolyte portion at the boundary therebetween is equal to or less than 10 μm.3. The gas sensor element as set forth in claim 1 , wherein the bottom and side walls of the basal body are connected with each other via a curved boundary portion therebetween.4. The gas sensor element as set forth in claim 1 , wherein a major component of the at least one solid electrolyte portion is partially-stabilized zirconia.5. The gas sensor element as set forth in claim 1 , wherein a major component of the electrically insulative ceramic material claim 1 , of which the basal body is made claim 1 , is alumina.6. A method of ...

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Номер записи: 8
19-09-2013 дата публикации

CERAMIC-BODY-FORMING BATCH MATERIALS COMPRISING SILICA, METHODS USING THE SAME AND CERAMIC BODIES MADE THEREFROM

Номер: US20130244860A1
Автор: McCauley Daniel Edward, Rodboum Anthony Nicholas, Tepesch Patrick David, Warren Christopher John
Принадлежит: CORNING INCORPORATED

The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies. 19-. (canceled)10. A method of making a ceramic body , said method comprising:preparing a batch material comprising at least one pore former and inorganic batch components comprising at least one silica source;forming a green body from said batch material; andfiring the green body to obtain a ceramic body;{'sub': breadth', '50, 'wherein the at least one silica source has a particle size distribution with an sDof about 2 or less, and a median particle size (sd) ranging from about 5 μm to 240 μm.'}11. The method of claim 10 , wherein the particle size distribution sDof the at least one silica source is about 1.7 or less.12. The method of claim 10 , wherein the median particle size (sd) of the at least one silica source ranges from about 5 μm to 50 μm.13. The method of claim 10 , wherein said at least one pore former has a median particle size (pd) claim 10 , and the ratio of sdto pdis in the range of from about 0.6 to about 1.5.14. The method of claim 10 , wherein said ceramic body is an aluminum titanate composite ceramic body or a cordierite ceramic body.15. A ceramic body made in accordance with the method comprising:forming a batch material comprising at least one pore former and inorganic batch components comprising at least one source of silica;forming a green body from said batch material; andfiring the green body to obtain the ceramic body;{'sub': breadth', '50, 'wherein the at least one source of silica has a particle size distribution with an sDof about 2 or less, and a median ...

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Номер записи: 9
26-09-2013 дата публикации

CAST BODIES, CASTABLE COMPOSITIONS, AND METHODS FOR THEIR PRODUCTION

Номер: US20130249136A1
Автор: Teiken Justin
Принадлежит: VESUVIUS CRUCIBLE COMPANY

A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications. 1. A castable composition comprising refractory material , wherein the composition comprises:a) a first grain fraction consisting of particles with diameters less than 100 micrometers;b) a second grain fraction consisting of particles with diameters less than 100 micrometers; andc) a plurality of adjacent grain fractions separated by gaps having a particle diameter ratio of the square root of two, the plurality of grain fractions consisting of particles with diameters greater than 100 micrometers.2. A castable composition according to claim 1 , further comprising a third grain fraction consisting of particles with diameters less than 100 micrometers.3. A castable composition according to claim 2 , further comprising a fourth grain fraction consisting of particles with diameters less than 100 micrometers.4. A castable composition according to claim 3 , further comprising a fifth grain fraction consisting of particles with diameters less than 100 micrometers.5. A castable composition according to claim 3 , wherein the first grain fraction claim 3 , the second grain fraction claim 3 , the third grain fraction and the fourth grain fraction comprise a material selected from the group consisting of alumina and Secar cement.6. A castable composition according to claim 1 , wherein the composition consists of more than 4 dry weight percent of particles with diameters less than 100 micrometers.7. A castable composition according to claim 1 , wherein the composition consists of more than 13 dry weight percent of particles with diameters less than 100 micrometers.8. A castable composition ...

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Номер записи: 10
03-10-2013 дата публикации

CERAMICS PASTE AND LAMINATED BODY

Номер: US20130260983A1
Автор: ABE Masahiro, IWATA Koichi, OMORI Takeshi
Принадлежит: NGK Insulators, Ltd.

A NOx sensor is produced by forming a stack with a ceramics paste including ceramic particles, a resin, a solvent, and one or more additives selected from additives of a first group having a first structure containing one or more selected from ether structures, urethane structures, hydroxy group-containing structures, ester structures, and acrylic structures and additives of a second group having any one or more structures of the additives of the first group and a second structure containing one or more selected from imidazoline structures, ethylenediamine structures, and amine structures. The ceramics paste contains any one of the additives of the first group and the second group and thus has an appropriate affinity for a cutting edge at the time of cutting a laminated body before the firing of the NOx sensor 1. a ceramics paste including;ceramic particles,a resin,a solvent, andone or more additives selected from additives of a first group having a first structure containing one or more selected from ether structures, urethane structures, hydroxy group-containing structures, ester structures, and acrylic structures, and additives of a second group having any one or more structures of the additives of the first group and a second structure containing one or more selected from imidazoline structures, ethylenediamine structures, and amine structures.2. The ceramics paste according to claim 1 , wherein each of the additives of the first group contain at least one selected from low-molecular-weight organic compounds containing functional groups with affinities for the ceramic particles claim 1 , high-molecular-weight copolymers containing functional groups with affinities for the ceramic particles claim 1 , block copolymers containing functional groups with affinities for the ceramic particles claim 1 , oligomers containing functional groups with affinities for the ceramic particles claim 1 , and phenol ethoxylate containing functional groups with affinities for the ...

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Номер записи: 11
17-10-2013 дата публикации

Method for producing hydrogen chloride or an aqueous solution thereof using untreated salt water, thus produced product, use of the product and electrodialysis system

Номер: US20130272952A1
Автор: Huss Rainer
Принадлежит: WME Gesellschaft für windkraftbetriebene Meerwasserentsalzung mbH

A method of producing hydrogen chloride, or an aqueous solution thereof, includes the steps: a) furnishing a first electrolyte containing chloride ions; b) carrying out an electrodialysis, wherein the first electrolyte is subjected to a cathodic reduction resulting in a catholyte, wherein the concentration of chloride ions drops in the first electrolyte, the concentration of hydroxide ions increases in the first electrolyte, and a product in the form of hydrogen chloride or an aqueous solution thereof is produced; c) processing of at least a partial quantity of the catholyte, resulting in the first electrolyte, wherein an untreated saline water is used, the concentration of chloride ions increases in the catholyte and the concentration of hydroxide ions drops in the catholyte; and d) at least partial reuse of the catholyte processed according to step c) as the first electrolyte in step b). 122-. (canceled)23. A method of producing hydrogen chloride or an aqueous solution of hydrogen chloride by using an untreated saline water , the method comprising the steps of:furnishing a first electrolyte, wherein the first electrolyte contains chloride ions having an initial concentration of chloride ions; the first electrolyte is subjected to a first cathodic reduction from which results a first catholyte;', 'the concentration of chloride ions drops in the first electrolyte;', 'a concentration of hydroxide ions increases in the first electrolyte; and', 'a first product in a form of hydrogen chloride or an aqueous solution of hydrogen chloride is produced;, 'carrying out a first electrodialysis, wherein the untreated saline water is used;', 'the concentration of chloride ions increases in the first catholyte; and', 'the concentration of hydroxide ions drops in the first catholyte;, 'processing at least a partial quantity of the first catholyte, from which results a second electrolyte, whereinfurnishing a third electrolyte, wherein the third electrolyte contains chloride ions, ...

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Номер записи: 12
19-12-2013 дата публикации

METHOD FOR PREPARING POLYCRYSTALLINE ALUMINUM OXYNITRIDE HAVING ENHANCED TRANSPARENCY

Номер: US20130337993A1
Автор: HAN Bo Hoon, JUNG In Chul, KIM Ji Hye, Lee Jae Hyung
Принадлежит: INDUSTRY-ACADEMIC COOPERATION FOUNDATION YEUNGNAM UNIVERSITY

Disclosed is a method for preparing polycrystalline aluminum oxynitride having enhanced transparency, and preparing polycrystalline aluminum oxynitride by sintering a powder mixture of AlOand AlN under atmospheric pressure, wherein the content of AlN is set to 17 to 26 mol %, a first sintering is performed at 1,575° C. to 1,675° C. so as to enable raw-material powders to have a relative density of 95% or higher, and a second sintering is performed so as to enable the raw-material powders to have a higher relative density. 1. A method for preparing transparent polycrystalline aluminum oxynitride (AlON) , wherein a powder mixture of aluminum oxide (AlO) and aluminum nitride (AlN) is sintered under an atmospheric pressure , the method comprising:performing first sintering at a temperature from 1575° C. to 1675° C. such that a relative density is equal to or higher than 95% and the content of pure AlN is in a range from 17 to 26 mol %; andperforming second sintering at a temperature from 1900° C. to 2050° C. such that a relative density higher than that in the first sintering is obtained,wherein a visible-light transmittance of a specimen having a thickness of 1.5 mm, which is obtained by the second sintering, is equal to or higher than 70%.2. The method of claim 1 , wherein the first sintering and second sintering are performing by adding at least one selected from 0.02 to 0.5 wt % of yttrium oxide (YO) claim 1 , 0.02 to 0.5 wt % of lanthanum oxide (LaO) claim 1 , yttrium (Y) compound corresponding to 0.02 to 0.5 wt % of YO claim 1 , or lanthanum (La) compound corresponding to 0.02 to 0.5 wt % of LaO claim 1 , as a sintering additive.3. The method of claim 2 , the first sintering and second sintering are performing by further adding 0.06 to 0.29 wt % of magnesium oxide (MgO) or magnesium (Mg) compound corresponding to 0.06 to 0.29 wt % of MgO claim 2 , as a sintering additive.4. The method of claim 1 , wherein the first sintering and second sintering are performed in ...

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Номер записи: 13
16-01-2014 дата публикации

CONTAINER FOR HEAT TREATMENT OF LITHIUM-CONTAINING COMPOUND

Номер: US20140017424A1
Автор: Achiha Takashi, KAMIYA Takahiro, Koike Yasuta
Принадлежит: TYK Corporation

A container for heat treatment of a positive-electrode active material of a lithium ion battery to hold raw material powder of the positive-electrode active material of the lithium ion battery when the raw material powder is subjected to heat treatment is provided. The heat treatment container contains 60 to 95 mass % of alumina and 10 to 20 mass % of silica, is free from MgO, ZrOand Li compounds, and has a porosity of 10 to 20%. The heat treatment container suppresses a reaction product from contaminating the raw material powder owing to suppressed reactivity with the raw material powder, and is suppressed from being cracked by thermal shock owing to the porosity in the predetermined range. 1. A container for heat treatment of a positive-electrode active material of a lithium ion battery , comprising:based on a total mass of the container,from 60 to 95 mass % of alumina, andfrom 10 to 20 mass % of silica,wherein,{'sub': '2', 'the container is free from MgO, ZrOand Li compounds,'}the container has a porosity of from 10 to 30% andthe container is suitable for holding raw material powder of the positive-electrode active material of the lithium ion battery when the raw material powder is subject to the heat treatment.2. (canceled)3. The container of claim 1 , wherein the container is formed of alumina and mullite.4. The container of claim 1 , wherein the container comprises from 70 to 90 mass % of alumina.5. The container of claim 1 , wherein the container has a porosity of from 15 to 25%. The present invention relates to a container for heat treatment of a lithium-containing compound to be used in applying heat treatment to the lithium-containing compound.A variety of compounds, especially inorganic compounds are produced through a heat treatment step. In general, heat treatment is carried out by heating a compound (an inorganic compound or a raw material thereof) to be thermally treated with the compound held by a heat-resistant heat treatment container. The heat ...

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Номер записи: 14
16-01-2014 дата публикации

ALKYL-MODIFIED VINYL ACETAL POLYMER, AND COMPOSITION

Номер: US20140018488A1
Автор: KAWAGOE Masako, Nii Shinsuke
Принадлежит: KURARAY CO., LTD.

Provided are a vinyl acetal polymer that has sufficient plasticity and solubility in an alcohol solvent, imparts low viscosity, stability, etc., to a solution thereof, is less likely to cause phase separation from other components, and allows for formation of a slurry superior in dispersibility of particles and thixotropic nature, as well as a sheet superior in strength and flexibility, and the like. An alkyl-modified vinyl acetal polymer obtained by subjecting an alkyl-modified vinyl alcohol polymer to acetalization, in which the alkyl-modified vinyl alcohol polymer comprises a monomer unit represented by the following general formula (I), and has a viscosity average degree of polymerization P of 150 or greater and 5,000 or less, a degree of saponification of 20 mol % or greater and 99.99 mol % or less, and a percentage of alkyl modification S with the monomer unit of 0.05 mol % or greater and 5 mol % or less. 2. The alkyl-modified vinyl acetal polymer of claim 1 , having a degree of acetalization of 1 mol % to 85 mol %.4. A composition comprising the alkyl-modified vinyl acetal polymer of .5. The composition of claim 4 , further comprising a ceramic powder and an organic solvent.6. A ceramic green sheet produced from the composition of .7. A laminated ceramic capacitor produced from the ceramic green sheet of .9. A composition comprising the alkyl-modified vinyl acetal polymer of .10. The composition of claim 9 , further comprising a ceramic powder and an organic solvent.11. A ceramic green sheet produced from the composition of .12. A laminated ceramic capacitor produced from the ceramic green sheet of .13. The composition of claim 5 , which is suitable for use as a slurry composition for producing a ceramic green sheet.14. The composition of claim 10 , which is suitable for use as a slurry composition for producing a ceramic green sheet. The present invention relates to an alkyl-modified vinyl acetal polymer that is superior in plasticity, a composition ...

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Номер записи: 15
06-02-2014 дата публикации

POROUS ALUMINUM OXIDE

Номер: US20140038819A1
Автор: Heinl Roland, Schröter Peter, Stöckl Klaus
Принадлежит: Ceram Tec GmbH

The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-AlO, to methods for producing the substrate material, and to the use of the substrate material. 119-. (canceled)20. A substrate material comprising a mechanically stable , component-penetrating framework structure composed of alpha-AlO , wherein the substrate material is highly porous.21. The substrate material according to claim 20 , wherein the alpha-AlOcomprises up to 30 to 90% by weight based on the sum of all inorganic components of a first alpha-AlOcomponent having a primary crystal grain size of 1 to 3 μm and an agglomerate size of 3 to 5 μm claim 20 , and up to 10 to 70% by weight based on the sum of all inorganic components of a second alpha-AlOcomponent having a primary crystal grain size of 0.3 to 1 μm and an agglomerate size of 0.5 to 1 μm.22. The substrate material according to claim 20 , wherein the alpha-AlOcomprises up to 50% by weight based on the sum of all inorganic components of an AlOcomponent which has been formed in situ from an AlOprecursor material during the production.23. The substrate material according to claim 22 , wherein the AlOprecursor is selected from the group consisting of Al(OH) claim 22 , AlOOH and a transition alumina.24. The substrate material according to claim 23 , wherein the AlOprecursor is Al(OH)having a grain size of 1.3 μm.25. The substrate material according to claim 20 , wherein the substrate material has a multimodal pore structure with high porosity claim 20 , and at the same time has high mechanical strength.26. The substrate material according to claim 20 , wherein the substrate material has a specific surface measured according to the BET method of from 0.5 to 1.3 m/g.27. The substrate material according to claim 26 , wherein the specific surface is from 0.5 to 0.95 m/g.28. The substrate material according to claim 20 , wherein the weight ...

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Номер записи: 16
06-02-2014 дата публикации

POROUS ALUMINUM OXIDE

Номер: US20140038820A1
Автор: Heinl Roland, Schröter Peter, Stöckl Klaus
Принадлежит: Ceram Tec GmbH

The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-AlO, to methods for producing the substrate material, and to the use of the substrate material. 118.-. (canceled)19. A substrate material comprising alpha-AlO , wherein the alpha-AlOcomprises a first alpha-AlOcomponent having a primary crystal grain size of 1 to 3 μm , wherein the substrate material is highly porous and is provided with a mechanically stable , component-penetrating framework structure comprising the alpha-AlO.20. A substrate according to claim 19 , wherein the first alpha-AlOis present in an amount of up to to 30 to 90% by weight based on the sum of all inorganic components.21. A substrate material according to claim 19 , wherein first alpha-AlOcomponent has an agglomerate size of 3 to 5 μm claim 19 , and further comprises up to 10 to 70% by weight based on the sum of all inorganic components of a second alpha-AlOcomponent having a primary crystal grain size of 0.3 to 1 μm and an agglomerate size of 0.5 to 1 μm.22. A substrate material according to claim 19 , wherein the substrate material contains claim 19 , in addition to the first and second alpha-AlOcomponent claim 19 , up to 50% by weight based on the sum of all inorganic components of an AlOcomponent which has been formed in situ from an AlOprecursor material during the production.23. A substrate material according to claim 19 , wherein the AlOprecursor is selected from the group consisting of Al(OH) claim 19 , AlOOH and a transition alumina.24. A substrate material according to claim 19 , wherein the AlOprecursor is Al(OH)having a grain size of 1.3 μm.25. A substrate material according to claim 19 , wherein the substrate material has a multimodal pore structure with high porosity claim 19 , and at the same time has high mechanical strength.26. A substrate material according to claim 19 , wherein the substrate material ...

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Номер записи: 17
27-02-2014 дата публикации

ELECTRODIALYSIS UNIT FOR WATER TREATMENT

Номер: US20140054173A1
Автор: Andersen Aage Bjorn
Принадлежит:

An electrodialysis unit comprises a cathode , an anode , a membrane between the cathode and the anode , a cathode flow path for water flow along the membrane on the cathode side, an anode flow path for water flow along the membrane on the anode side, and a reaction zone formed between the membrane and the cathode where the cathode faces the anode , wherein the cathode flow path is arranged for laminar flow in the reaction zone and wherein the electrodialysis unit comprises flow conditioning elements arranged to promote laminar flow in the incoming water flow to the cathode flow path 1. An electrodialysis unit comprising:a cathode, an anode, a membrane between the cathode and the anode, a cathode flow path for water flow along the membrane on the cathode side, an anode flow path for water flow along the membrane on the anode side, and a reaction zone formed between the membrane and the cathode where the cathode faces the anode, wherein the cathode flow path is arranged for laminar flow in the reaction zone and wherein the electrodialysis unit comprises flow conditioning elements arranged to promote laminar flow in the incoming water flow to the cathode flow path.2. An electrodialysis unit as claimed in claim 1 , wherein the flow conditioning elements are arranged to promote laminar flow in an area preceding the reaction zone and cathode flow path in the reaction zone may be a straight-sided flow path of generally constant dimensions.3. An electrodialysis unit as claimed in claim 1 , wherein areas in the cathode flow path of varying shape and size are outside of the reaction zone claim 1 , and preferably spaced away from the reaction zone.4. An electrodialysis unit as claimed in claim 1 , wherein the cathode flow path is free from obstructions in the reaction zone.5. An electrodialysis unit as claimed in claim 1 , wherein the electrodialysis unit has no spacer element on the cathode side.6. An electrodialysis unit as claimed in claim 1 , wherein the electrodialysis ...

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Номер записи: 18
20-03-2014 дата публикации

CONCENTRATION POLARIZATION IDENTIFICATION AND MITIGATION FOR MEMBRANE TRANSPORT

Номер: US20140076728A1
Автор: Bellman Karen, Prakash Shaurya
Принадлежит: Ohio State Innovation Foundation

Disclosed herein is a membrane separation apparatus with reduced concentration polarization and enhanced permeate flux. Also disclosed is a method for separating permeate from retentate in a fluid using the disclosed membrane separation apparatus. Also disclosed is a method for inhibiting or preventing concentration polarization of a permeable membrane used in membrane separation. 1. A membrane separation apparatus , comprising(a) a feed chamber and a permeation chamber separated by a fluid permeable membrane, wherein the permeable membrane comprises a separation side in contact with the feed chamber and a permeation side in contact with the permeation chamber;(b) a primary electrode positioned at a fluid boundary layer on the separation side of the permeable membrane; and(c) an AC voltage source configured to supply a voltage of between 0.5 and 10 V to the primary electrode.2. The apparatus of claim 1 , wherein the primary electrode is positioned at a location within 100 μm from the separation side of the permeable membrane.3. The apparatus of claim 2 , wherein the primary electrode comprises a conductive mesh.4. The apparatus of claim 1 , wherein the permeable membrane is plated with a conductive material on the separation side that acts as the primary electrode.5. The apparatus of claim 2 , further comprising a counter electrode positioned on the permeation side of the permeable membrane.6. The apparatus of claim 5 , wherein the counter electrode is positioned within the permeation chamber.7. The apparatus of claim 5 , wherein the counter electrode is positioned at a location within 100 μm μfrom the permeation side of the permeable membrane8. The apparatus of claim 7 , wherein the counter electrode comprises a conductive mesh.9. The apparatus of claim 7 , wherein the permeable membrane is plated with a conductive material on the permeation side that acts as the counter electrode.10. The apparatus of claim 1 , wherein the AC voltage source is configured to apply ...

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Номер записи: 19
03-01-2019 дата публикации

Method for the production of new nanomaterials

Номер: US20190001308A1
Автор: Nancy Linder, Nicolas PASTERNAK
Принадлежит: Commissariat a lEnergie Atomique et aux Energies Alternatives CEA, Universite de Cergy-Pontoise

A method for producing new nanomaterials, 80 to 100 mol % of which are composed of TiO2 and 0 to 20 mol % are composed of another metal or semi-metal oxide that has a specific surface of 100 to 300 m2.g−1and 1 to 3 hydroxyl groups per nm2.

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Номер записи: 20
27-01-2022 дата публикации

METHODS OF SYNTHESIZING CANNABIGERGOL, CANNABIGEROLIC ACID, AND ANALOGS THEREOF

Номер: US20220024843A1
Автор: BRUMAR Daniel, FARD Mahmood Azizpour, Geiling Ben, HAGHDOOST MANJILI Mohammadmehdi
Принадлежит: CANOPY GROWTH CORPORATION

Disclosed are methods for preparing cannabigerol (CBG) or a CBG analog, embodiments of the method comprising providing a compound (I); combining the compound (I) with geraniol and a solvent to form a reaction mixture; and combining the reaction mixture with an acid catalyst to form a product mixture comprising the CBG or the CBG homolog. The method may further comprise separating the CBG or the CBG analog from the product mixture and may further comprise purifying the CBG or CBG analog. Methods for preparing cannabigerolic acid (CBGA) or a cannabigerolic acid analog are also disclosed. The present disclosure also provides highly purity CBG, CBGA, and analogs thereof. 2. The method of claim 1 , wherein the acid catalyst is camphorsulfonic acid.3. The method of claim 1 , wherein the acid catalyst is acidic alumina.4. The method of claim 1 , wherein the acid catalyst is montmorillonite K10.5. The method of claim 1 , wherein the acid catalyst is iron (III) perchlorate hydrate.6. The method of claim 1 , wherein the method includes the solvent.7. The method of claim 6 , wherein the solvent is chloroform claim 6 , heptane claim 6 , tert-butylmethyl ether claim 6 , diethyl ether claim 6 , dichloromethane claim 6 , dichloroethane claim 6 , trifluorotoluene claim 6 , hexane claim 6 , cyclohexane claim 6 , pentane claim 6 , toluene claim 6 , or any combination thereof.8. The method of claim 1 , wherein the compound (I) and geraniol are present in a compound (I):geraniol molar ratio of between about 1:1.5 and about 1:3.5.9. The method of claim 8 , wherein the compound (I):geraniol molar ratio is between about 1:1.5 to about 1:2.10. The method of claim 9 , wherein the compound (I):geraniol molar ratio is about 1:1.7.11. The method of claim 1 , wherein the acid catalyst is in an amount of between about 0.001 and about 0.5 molar equivalents with respect to the compound (I).12. The method of claim 1 , wherein Ris C-Calkyl.13. The method of claim 1 , wherein Ris CH.14. The method of ...

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Номер записи: 21
19-01-2017 дата публикации

PURIFICATION PROCESS FOR PARTLY-HYDROLYZED CELLULOSE

Номер: US20170014771A1
Автор: Genders J. David, Lockhart James M., Symons Peter G.
Принадлежит: NORAM Engineering and Constructors Ltd.

A method of recovering purified partly-hydrolyzed cellulose particles from a composition comprising agglomerated partly-hydrolyzed cellulose particles and an acid, using electrodialysis. The invention addresses the problem of reducing the acid to very low levels while avoiding the high capital and operating costs, high water usage and large filtration surface area or dilution time requirements of the prior art processes. Following dilution, concentration by centrifuging or settling, and/or dialysis of the composition, the composition is treated in an electrodialysis cell to remove ions, such as free sulfate from sulfuric acid. The method may include having an anion exchange resin in the feed compartment of the electrodialysis cell, adding a base to the receiving solution in the electrodialysis cell, and a second step of electrodialysis of the purified partly-hydrolyzed cellulose particles. 1. A method of recovering purified partly-hydrolyzed cellulose particles from a composition comprising agglomerated partly-hydrolyzed cellulose particles and free ions , comprising the step of electrodialysis of the composition to produce a stream comprising purified partly-hydrolyzed cellulose particles.2. A method according to claim 1 , wherein the free ions comprise an acid.3. A method according to claim 1 , further comprising pre-treatment of the composition before the electrodialysis to reduce the concentration of the free ions.4. A method according to claim 3 , wherein the free ions comprise an acid.5. A method according to claim 3 , wherein the pre-treatment comprises diluting the composition with a fluid comprising water.6. A method according to claim 3 , wherein the pre-treatment comprises diluting the composition with a fluid comprising water and concentrating the diluted composition.7. A method according to claim 3 , wherein the pre-treatment comprises diluting the composition with a fluid comprising water claim 3 , concentrating the diluted composition claim 3 , and ...

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Номер записи: 22
15-01-2015 дата публикации

ALUMINIUM HYDROXIDE POWDER AND METHOD FOR PRODUCING SAME

Номер: US20150017090A1
Автор: AZUMA Norifumi, Hyojo Ayumi, KAWAKAMI Yoshitaka, Okusako Kensen, YAMAMOTO Koji
Принадлежит: Sumitomo Chemical Company, Limited

The present invention provides an aluminum hydroxide powder having a predetermined cumulative pore volume which falls within a range suited for the production of a high purity alumina, and a method for producing the same. It is possible to produce an aluminum hydroxide powder having high bulk density and high firing efficiency, and an aluminum hydroxide having high shape retention. 1. An aluminum hydroxide powder , wherein a cumulative pore volume V measured by a mercury penetration method is 1.0 mL/g or more , the cumulative pore volume V being cumulated when a pore radius R is within a range of 0.01 μm or more and 1 μm or less.2. The aluminum hydroxide powder according to claim 1 , wherein in a pore distribution curve showing a relation between the pore radius R and a log differential pore volume (dV/d log R) represented by using the pore radius R and the cumulative pore volume V claim 1 , measured by the mercury penetration method claim 1 ,the dV/d log R exceeds 0.6 mL/g when R is within an entire range of 0.01 μm or more and 1 μm or less.3. The aluminum hydroxide powder according to claim 1 , wherein the tamped density is 0.10 g/mL or more and 0.25 g/mL or less claim 1 , and the untamped density is 0.15 g/mL or more and 0.30 g/mL or less.4. The aluminum hydroxide powder according to claim 1 , wherein each amount of Si claim 1 , Na claim 1 , Ca claim 1 , Fe claim 1 , Cu claim 1 , and Mg contained as impurities in the aluminum hydroxide powder is 10 ppm by weight or less when converted in terms of impurities in alumina.5. A method for producing the aluminum hydroxide powder according to claim 1 , comprising:a first hydrolysis step of adding an aqueous alcohol solution having a water concentration of 5% by weight or more and 30% by weight or less to a solution containing an aluminum alkoxide so that a molar ratio of water/aluminum alkoxide falls within a range of 1.5 or more and 2.0 or less to hydrolyze the aluminum alkoxide;a second hydrolysis step of separating ...

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Номер записи: 23
28-01-2021 дата публикации

Method for inhibiting extractant degradation of dsx process through metal extraction control

Номер: US20210024367A1
Автор: Jeon Woong An, Youn Kyu Yi, Young Hun Kim
Принадлежит: Korea Resources Corp

Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.

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Номер записи: 24
04-02-2016 дата публикации

Processes for treating fly ashes

Номер: US20160032421A1
Автор: Denis PRIMEAU, Joel Fournier, Richard Boudreault
Принадлежит: Orbite Technologies Inc

There are provided processes for treating fly ash. For example, the processes can comprise leaching fly ash with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating the solid from the leachate; reacting the leachate with HCl so as to obtain a liquid and a precipitate comprising the aluminum ions in the form of AlCl 3 , and separating the precipitate from the liquid; and heating the precipitate under conditions effective for converting AlCl 3 into Al 2 O 3 and optionally recovering gaseous HCl so-produced.

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Номер записи: 25
17-02-2022 дата публикации

Process of electrodialysis for stabilizing wines with low water consumption

Номер: US20220047994A1
Автор: Rui DE BRITO ESTRELA, Vitor Manuel Geraldes Fernandes
Принадлежит: INSTITUTO SUPERIOR TÉCNICO, Wineinova Lda

The present disclosure relates to a method for reducing water consumption in tartaric stabilization of wine by electrodialysis, comprising the following steps: passing an aqueous stream comprising a weak organic acid between a tank and an electrodialysis module; feeding the electrodialysis module with a stream of wine to be treated so that potassium bitartrate or calcium tartrate pass from the wine to be treated to the aqueous stream which flows between the tank and the electrodialysis module, so that during the passage of the aqueous stream through the electrodialysis module, the potassium bitartrate or calcium tartrate initially present in the wine stream are transferred to the aqueous stream and discarding the aqueous stream when it reaches a certain potassium bitartrate or calcium tartrate saturation point.

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Номер записи: 26
31-01-2019 дата публикации

MACROPOROUS CATALYST FOR THE PREPARATION OF ALIPHATIC AMINES

Номер: US20190031596A1
Автор: DIAZ-MAROTO CARPINTERO Javier, Leconte Philippe, OCAMPO Fabien, YE Shengyin
Принадлежит: Rhodia Operations

A process for the preparation of aliphatic amines, comprises reacting an aliphatic alcohol with an aminating agent in the presence of a catalyst. The catalyst contains copper oxide on a support made of porous alumina, wherein the porous alumina has a volume, corresponding to pores greater than 500 Å in diameter, of from 10 ml/100 g to 95 ml/100 g. 2. The process according to claim 1 , wherein the porous alumina has a volume claim 1 , corresponding to pores greater than 500 Å in diameter claim 1 , of from 20 ml/100 g to 95 ml/100 g.3. The process according to claim 1 , wherein the porous alumina has a volume claim 1 , corresponding to pores greater than 500 Å in diameter claim 1 , of from 30 ml/100 g to 95 ml/100 g.4. The process according to claim 1 , wherein the porous alumina has a specific surface area of from 10 m/g to 280 m/g.5. The process according to claim 1 , wherein the porous alumina has a specific surface area of from 50 m/g to 280 m/g.6. The process according to claim 1 , wherein the catalyst further comprises a compound of at least one element selected from Fe claim 1 , Co claim 1 , Zn claim 1 , Ni claim 1 , Cr claim 1 , Mn claim 1 , Mg claim 1 , Ba and rare earth metals.7. The process according to claim 1 , wherein the catalyst comprises from 5 wt % to 50 wt % of copper oxide claim 1 , weight percentage based on the total weight of the catalyst.9. The process according to claim 1 , wherein the aliphatic alcohol and the aminating agent are mixed together with a flow of hydrogen and the mixture is continuously introduced into a reaction zone claim 1 , wherein the molar ratio of the aliphatic alcohol/the aminating agent/the hydrogen is in the range of from 1:1:5 to 1:2:20.10. The process according to claim 9 , wherein the molar ratio of the aliphatic alcohol/the aminating agent/the hydrogen is in the range of from 1:1:5 to 1:1.2:15.11. The process according to claim 1 , wherein the reaction is carried out at a temperature of from 150° C. to 350° C.12. ...

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Номер записи: 27
30-01-2020 дата публикации

THERMAL DECOMPOSITION OF MAGNESIUM CHLORIDE

Номер: US20200032300A1
Автор: BOKHOVE Jeroen, DE HAAN André Banier, LAKSMANA Fesia Lestari
Принадлежит: Purac Biochem BV

A method for conversion of magnesium chloride into magnesium oxide and HCl includes the steps of providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C., withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor. The magnesium chloride compound provided to the thermohydrolysis reactor may be a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl.4HO. 1. Method for conversion of magnesium chloride into magnesium oxide and HCl , said method comprising the steps of:providing a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C.; and,withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing an HCl containing gas stream from the thermohydrolysis reactor,{'sub': 2', '2, 'wherein the magnesium chloride compound provided to the thermohydrolysis reactor is a solid magnesium chloride compound which comprises at least 60 wt. % of MgCl.4HO.'}2. The method according to claim 1 , wherein at least 80 wt. % of the magnesium chloride compound is MgCl.4HO.3. The method according to claim 1 , wherein the magnesium chloride compound comprises less than 30 wt. % of magnesium chloride hexahydrate.4. The method according to claim 1 , wherein the magnesium chloride compound comprises less than 40 wt. % of the total of magnesium chloride anhydrate claim 1 , magnesium chloride monohydrate and magnesium chloride dihydrate.5. The method according to claim 4 , wherein the magnesium chloride compound comprises less than 30 wt. % of the total of magnesium chloride anhydrate claim 4 , magnesium chloride monohydrate and magnesium chloride dihydrate.6. The method according to claim 1 , wherein the magnesium chloride compound comprises less than 30 wt. % of magnesium chloride hexahydrate and less than 40 wt. % of the total of magnesium ...

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Номер записи: 28
01-02-2018 дата публикации

SURFACE-MODIFIED IRON-BASED OXIDE MAGNETIC PARTICLE POWDER, AND METHOD FOR PRODUCING SAME

Номер: US20180033528A1
Автор: KAWAHITO Tetsuya, SAKANE Kenji
Принадлежит:

A surface-modified iron-based oxide magnetic particle powder has good solid-liquid separation property in the production process, has good dispersibility in a coating material for forming a coating-type magnetic recording medium, has good orientation property, and has a small elution amount of a water-soluble alkali metal, and to provide a method for producing the surface-modified iron-based oxide magnetic particle powder. The surface-modified iron-based oxide magnetic particle powder can be obtained by neutralizing a solution containing dissolved therein a trivalent iron ion and an ion of the metal, by which the part of Fe sites is to be substituted, with an alkali aqueous solution, so as to provide a precursor, coating a silicon oxide on the precursor, heating the precursor to provide e-type iron-based oxide magnetic powder, and adhering a hydroxide or a hydrous oxide of one kind or two kinds of Al and Y thereto. 1. A surface-modified iron-based oxide magnetic particle powder comprising iron-based oxide magnetic particle powder containing ε-FeOor ε-FeO , a part of Fe sites of which is substituted by another metal element , having an average particle diameter measured with a transmission electron microscope of 5 nm or more and 30 nm or less , having adhered to a surface thereof a hydroxide or a hydrous oxide of a metal element S forming a precipitate of a hydroxide in an aqueous solution having pH of 7 or more and 12 or less.2. The surface-modified iron-based oxide magnetic particle powder according to claim 1 , wherein the metal element S is one kind or two kinds of Al and Y.3. The surface-modified iron-based oxide magnetic particle powder according to claim 1 , wherein the surface-modified iron-based oxide magnetic particle powder has a molar ratio SIM of 0.02 or more and 0.10 or less claim 1 , wherein M represents a sum of Fe and the substituting metal element contained therein.4. The surface-modified iron-based oxide magnetic particle powder according to claim ...

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Номер записи: 29
01-02-2018 дата публикации

METHOD OF CREATING SPRAY DEVICE FOR SHEATHLESS CE-MS, SPRAY DEVICE FOR SHEATHLESS CE-MS, AND SHEATHLESS CE-MS DEVICE

Номер: US20180033599A1
Автор: Abe Hiroshi, HIRAYAMA Akiyoshi, Soga Tomoyoshi
Принадлежит: KEIO UNIVERSITY

Processing a capillary distal end into acute-angle, an electrophoretic liquid passing hole through which electrophoretic liquid pass is opened in a flexible insulating plate. An electrodialysis-membrane is bonded covering the electrophoretic liquid passing hole; the capillary is securely bonded to the insulating plate portion with no gap therebetween, the portion excluding electrophoretic liquid passing hole on the electrodialysis top-membrane. A crack forms at the capillary portion at the electrophoretic liquid passing hole, with the capillary entirely secured to the insulating plate except portion at the electrophoretic liquid passing hole. The capillary is securely bonded to the insulating plate; reservoir stores electrophoretic liquid on the insulating plate-side to which the capillary is unsecured. An electrode insertion hole into which an electrode is inserted opened in the reservoir upper portion; the electrode is securely inserted into the electrode insertion hole. By this, high-sensitivity measurement is using a spray device for sheathless CE-MS. 1. A method of creating a spray device for sheathless CE-MS , the method comprising:a step of processing a distal end of a capillary to have an acute angle;a step of opening an electrophoretic liquid passing hole, through which an electrophoretic liquid can pass, in a flexible insulating plate;a step of bonding an electrodialysis membrane so as to cover the electrophoretic liquid passing hole;a step of securely bonding the capillary to a portion of the insulating plate with no gap therebetween, the portion excluding the electrophoretic liquid passing hole on top of the electrodialysis membrane;a step of forming a crack at a portion of the capillary at the electrophoretic liquid passing hole, the capillary being entirely secured to the insulating plate except a portion at the electrophoretic liquid passing hole;a step of entirely securely bonding the capillary to the insulating plate;a step of placing a reservoir ...

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Номер записи: 30
04-02-2021 дата публикации

Process For Extracting Values from Lithium Slag

Номер: US20210032724A1
Автор: Hazel LIM, Mirela GHISI, Suzanne Elizabeth MAREE, Yafeng GUO
Принадлежит: Tianqi Lithium Kwinana Pty Ltd

A process for extracting values from lithium slag comprising: (a) hydrothermally treating lithium slag with an aqueous solution of an alkaline compound at selected temperature and duration; (b) performing an ion exchange step on the alkaline treated lithium slag; and (c) recovering values selected from the group consisting of aluminium compounds, silicon compounds and compounds containing silicon and aluminium.

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Номер записи: 31
11-02-2016 дата публикации

POLYCRYSTALLINE TRANSPARENT CERAMICS LAMINATE

Номер: US20160039717A1
Автор: WU Rong-Fu
Принадлежит:

A polycrystalline transparent ceramics laminate includes a polycrystalline ceramics laminate made of polycrystalline transparent ceramics. The polycrystalline transparent ceramics contains aluminum oxide. The polycrystalline ceramics laminate may have flat, curved, or spherical surfaces. The polycrystalline ceramics laminate has a top and a bottom opposite to the top. The polycrystalline transparent ceramics laminate has a density greater than 3.5 g/cm, a surface roughness smaller than or equal to 1 μm, a transparency at a thickness of 1 mm greater than or equal to 60%, and a refractive index between 1.5 and 2.5. 1. A polycrystalline transparent ceramics laminate , comprising:{'sup': '3', 'b': 2', '5, 'a polycrystalline ceramics laminate, being made of polycrystalline transparent ceramics that contains aluminum oxide, and having a top and a bottom opposite to the top, the polycrystalline ceramics laminate having a density greater than 3.5 g/cm, a surface roughness smaller than or equal to 1 μm, a transparency at a thickness of 1 mm greater than or equal to 60%, and a refractive index between 1.5 and ..'}2. The polycrystalline transparent ceramics laminate of claim 1 , wherein crystals in the polycrystalline ceramics laminate are aligned at least two different axes.3. The polycrystalline transparent ceramics laminate of claim 1 , wherein the polycrystalline ceramics laminate is of a lengthwise shape having two opposite long edges and two opposite short edges claim 1 , the polycrystalline ceramics laminate bending from one said long edge toward the other long edge so that the top and the bottom are curved to an identical side claim 1 , thereby defining a radian on a minor axis of the laminate claim 1 , so that the polycrystalline ceramics laminate has a single-axis curved surface.4. The polycrystalline transparent ceramics laminate of claim 2 , wherein the polycrystalline ceramics laminate is of a lengthwise shape having two opposite long edges and two opposite short ...

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Номер записи: 32
15-02-2018 дата публикации

CARBON DIOXIDE SEQUESTRATION WITH MAGNESIUM HYDROXIDE AND REGENERATION OF MAGNESIUM HYDROXIDE

Номер: US20180043307A1
Автор: Jones Joe, Yablonsky Al
Принадлежит:

Embodiments of the present disclosure are directed to systems and methods of removing carbon dioxide from a gaseous stream using magnesium hydroxide and then regenerating the magnesium hydroxide. In some embodiments, the systems and methods can further comprise using the waste heat from one or more gas streams to provide some or all of the heat needed to drive the reactions. In some embodiments, magnesium chloride is primarily in the form of magnesium chloride dihydrate and is fed to a decomposition reactor to generate magnesium hydrochloride, which is in turn fed to a second decomposition reactor to generate magnesium hydroxide. 1. A method for producing magnesium hydroxide from magnesium chloride-containing material comprising:a first stage comprising the steps of introducing said material into a first reactor, passing a steam mixture into the first reactor with the magnesium chloride-containing material at the approximate temperature of 250 to 400° C., to form magnesium hydroxychloride and HCl, anda second stage of conveying the magnesium hydroxychloride into a second reactor, introducing therewith steam to form magnesium hydroxide and HCl,where the magnesium chloride-containing material comprises a water to magnesium chloride ratio of about 2:1.2. The method of claim 1 , where a portion of a steam mixture exiting the second reactor is the steam mixture introduced into the first reactor.3. The method of claim 1 , where at least a portion of the HCl exits the second reactor in the steam mixture that then passes through the first reactor.4. The method of claim 1 , where the magnesium chloride-containing material substantially comprises magnesium chloride dihydrate.5. The method of claim 1 , where a portion of HCl formed in the first reactor exits the first reactor with the steam mixture.6. The method of claim 1 , where the first reactor is at a temperature of 250-350° C.7. The method of claim 6 , transferring heat from a hot gas stream to the first recycling ...

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Номер записи: 33
16-02-2017 дата публикации

LATENT HEAT STORAGE BODY, METHOD FOR PRODUCING LATENT HEAT STORAGE BODY AND HEAT EXCHANGE MATERIAL

Номер: US20170044415A1
Автор: AKIYAMA Tomohiro, Nomura Takahiro, OKINAKA Noriyuki, SAGARA Akihito, Zhu Chunyu
Принадлежит: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

In the latent heat storage body () according to the present invention, the surface of a core particle () composed of a latent heat storage material of a metal or an alloy is coated with an oxidized film of a compositional element of the core particle (). Hence, the step of separately fabricating the core particle and the oxidized film () corresponding to a shell accommodating the core particle and accommodating the core particle inside the shell becomes unnecessary. Further since the core particle exhibits no expansion when transforming from a solid phase to a liquid phase, the component of the melted latent heat storage material stays inside the space covered with the oxidized film and the oxidized film is never damaged. Further, the oxidized film () can be made chemically stable. 1. A latent heat storage body microcapsule , comprising:a core particle comprising a latent heat storage material of an alloy; anda double film, with which a surface of the core particle is coated, and comprising a compact first oxidized film of a compositional element of the core particle, and a second oxidized film, provided on an outer surface of the compact first oxidized film, of a compositional element of the core particle,{'sub': A', 'B', 'A', 'B, 'sup': 0', '0', '0', '0, 'wherein the alloy of the core particle is an A-B alloy of at least one alloy component A selected from the following group A with at least one alloy component B selected from the following group B; and a standard free energy (ΔG) of oxide formation of the alloy component A and a standard free energy (ΔG) of oxide formation of the alloy component B satisfy a relationship of ΔG≧ΔGgroup A: Ca, Si, Bi, Mg, Sb, In, Sn, Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Pd, Ag, Au and Pb; andgroup B: Al, Cr, Mn, Si, Mg, Co and Ni.2. (canceled)3. The latent heat storage body microcapsule according to claim 1 , wherein the alloy of the core particle is an Al—Si alloy wherein the Al—Si alloy is controllable to have a low volume ...

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Номер записи: 34
19-02-2015 дата публикации

IMPROVEMENT IN PROCESS FOR THERMAL FIXATION OF CATALYTICALLY ACTIVE COMPONENT ONTO ALUMINA SUPPORT

Номер: US20150051068A1
Автор: Han Hyun-Sik, HAN Sang Yun, NA Seung Chul
Принадлежит: HEESUNG CATALYSTS CORPORATION

The present invention relates to an improvement in a process for the thermal fixation of a catalytically active component onto an alumina support and, more specifically, to an improvement in a process for the thermal fixation of a catalytically active component onto an alumina support for preparing a thermally stable catalyst for treating exhaust gas from an internal combustion engine, by means of thermally stable dispersion and fixation of the catalytically active component(s) for treating exhaust gas from an internal combustion engine, onto a surface or an internal space of the alumina support. 1. A method of thermally fixing a catalytically active component onto an alumina support , comprising the steps of:a) preparing impregnating powder containing alumina powder and a catalytically active component;b) stirring and heating the impregnating powder in a heating mixer provided on an outer wall thereof with a steam jacket to obtain quasi-dry impregnating powder having a water content of 5% or less;c) introducing the quasi-dry impregnating powder having a water content of 5% or less into a indirect heating-type upright screw reactor;d) carrying the introduced impregnating powder from an upper end of the reactor to a lower end thereof; ande) obtaining an alumina support product from the lower end of the reactor.2. The method of claim 1 , further comprising the step of discharging powder-mixed vapor produced in step b).3. The method of claim 1 , further comprising the step of applying air pressure into the reactor through the upper end of the reactor in step d).4. The method of claim 1 , or claim 1 , further comprising the step of adjusting a feed rate into the reactor between step b) and step c).5. The method of claim 4 , wherein the step of adjusting the feed rate into the reactor is conducted by a horizontal screw feeder.6. The method of claim 1 , wherein the impregnating powder introduced in step d) is carried from the upper end of the reactor to the lower end ...

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Номер записи: 35
14-02-2019 дата публикации

Recovery of cesium from epithermal mineral deposits

Номер: US20190048437A1
Автор: Bill McWILLIAM, Bruce W. DOWNING, David Dreisinger, David L. TRUEMAN, Mohammad MOKMELI
Принадлежит: Cascadero Copper Corp

Hydrometallurgical processes are provided for the recovery of metal values, including cesium, from epithermal mineral deposits, including pharmacosiderite-containing ores. Aspects of the process involve the preferential formation of a cesium alum, and preparation of cesium hydroxide from the cesium alum.

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Номер записи: 36
08-05-2014 дата публикации

THERMAL INSULATING FIREBRICK

Номер: US20140128242A1
Автор: Nagasaki Yasunari, Taniyama Daisuke, Terasawa Akira
Принадлежит: HINOMARU YOGYO CO., LTD.

An object of the invention is to provide, in porous thermal insulating firebricks formed by molding and drying bubble-containing slurry obtained by foaming slurry containing a fire resistant powder and water, a thermal insulating firebrick superior in thermal insulating property in spite of the same composition and porosity. 2. The thermal insulating firebrick according to claim 1 , wherein the fire resistant powder comprises a raw material comprising at least one selected from the group consisting of alumina claim 1 , mullite claim 1 , andalusite claim 1 , kyanite claim 1 , cordierite claim 1 , spinel claim 1 , magnesia claim 1 , and zirconia.3. The thermal insulating firebrick according to claim 2 , whereinthe fire resistant powder is a high purity alumina powder having a purity of 99% or higher, andthe thermal insulating firebrick has a bulk specific gravity of 1.2 or lower.4. The thermal insulating firebrick according to claim 2 , wherein the slurry comprises at least one of alumina cement claim 2 , hydraulic alumina claim 2 , and calcined gypsum.5. The thermal insulating firebrick according to claim 3 , wherein the slurry comprises at least one of alumina cement claim 3 , hydraulic alumina claim 3 , and calcined gypsum. The present invention relates to a thermal insulating firebrick. Specifically, the invention relates to a porous thermal insulating firebrick formed by molding and drying bubble-containing slurry obtained by foaming slurry containing a fire resistant powder and water.A thermal insulating firebrick (ceramic porous body) is a porous lightweight refractory to which not only fire resistance but also thermal insulating property are imparted by forming a lot of bubbles inside a fire resistant material. A thermal insulating firebrick is used independently for a heating surface (for example, inner surface of a furnace) in some cases, and is used in combination with another fire resistant material as lining in other cases.Hitherto, various production ...

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Номер записи: 37
21-02-2019 дата публикации

METHOD FOR PRODUCING AN ALUMINA GEL HAVING A HIGH DISPERSIBILITY AND A SPECIFIC CRYSTALLITE SIZE

Номер: US20190055135A1
Автор: BOUALLEG Malika, LAFON Olivier
Принадлежит: IFP ENERGIES NOUVELLES

Process for preparing alumina gel in a single precipitation step consisting of dissolving an aluminium precursor, aluminium chloride, in water, at a temperature of 10° C. to 90° C. such that the pH of the solution is from 0.5 to 5, for a period of 2 to 60 minutes, then adjusting the pH to 7.5 to 9.5 by adding a basic precursor, sodium hydroxide, to the solution obtained to obtain a suspension, at a temperature of 5° C. to 35° C., and for 5 minutes to 5 hours, followed by a filtration step, said process not comprising any washing steps. Also, novel alumina gel having a high dispersibility index, in particular a dispersibility index of more than 80%, a crystallite dimension of 0.5 to 10 nm, a chlorine content of 0.001% to 2% by weight and a sodium content of 0.001% to 2% by weight, the percentages by weight being expressed with respect to the total weight of the alumina gel. 1. An alumina gel having a dispersibility index of more than 80% , a crystallite dimension , obtained by the Scherrer X ray diffraction formula along the crystallographic directions [020] and [120] , respectively in the range 0.5 to 10 nm and in the range 0.5 to 15 nm , as well as a chlorine content in the range 0.001% to 2% by weight and a sodium content in the range 0.001% to 2% by weight , the percentages by weight being expressed with respect to the total weight of the alumina gel.2. The alumina gel as claimed in claim 1 , having a dispersibility index in the range 85% to 100%.3. The alumina gel as claimed in claim 2 , having a dispersibility index in the range 88% to 100%.4. A process for the preparation of an alumina gel as claimed in claim 1 , in a single precipitation step (a) consisting of dissolving an acidic aluminium precursor claim 1 , aluminium chloride claim 1 , in water claim 1 , at a temperature in the range 10° C. to 90° C. claim 1 , in a manner such that the pH of the solution is in the range 0.5 to 5 claim 1 , for a period in the range 2 to 60 minutes claim 1 , then adjusting ...

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Номер записи: 38
10-03-2016 дата публикации

SINTERED ABRASIVE PARTICLES, METHOD OF MAKING THE SAME, AND ABRASIVE ARTICLES INCLUDING THE SAME

Номер: US20160068729A1
Автор: Erickson Dwight D., Rosenflanz Anatoly Z.
Принадлежит:

A method of making sintered abrasive particles includes passing alumina precursor particles through a flame under conditions such that they are converted to alpha alumina. The precursor particles comprise a precursor of alpha alumina and have an average particle size of less than or equal to 500 microns. Sintered abrasive particles have a cellular microstructure comprising alpha alumina crystal grains of alpha alumina having a maximum dimension of less than about 3 microns are also disclosed. The sintered abrasive particles have an average particle size of less than or equal to 500 microns, and are essentially free of seed particles and alpha alumina grain size modifiers. Abrasive articles comprising a binder and a plurality of the sintered abrasive particles are also disclosed. 115-. (canceled)16. A method of making sintered abrasive particles , the method comprising:passing precursor particles through a flame under conditions such that they are converted into the sintered abrasive particles, wherein the precursor particles comprise a calcined precursor of alpha alumina, and wherein the precursor particles have an average particle size of less than or equal to 500 microns.17. The method of claim 16 , wherein the sintered abrasive particles comprise alpha alumina having a cellular microstructure claim 16 , and the alpha alumina has an areal porosity of less than or equal to 5 percent claim 16 , as measured using image analysis by cross-section at 10 claim 16 ,000 times magnification.18. The method of claim 16 , wherein the precursor particles are essentially free of seed particles.19. The method of claim 16 , wherein the precursor particles are essentially free of alpha alumina grain size modifiers.20. The method of claim 16 , wherein the precursor particles are accelerated through the flame by gravity substantially along a longitudinal axis of the flame.21. The method of claim 16 , wherein the sintered abrasive particles comprise shaped abrasive particles.22. The ...

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Номер записи: 39
11-03-2021 дата публикации

POROUS ALUMINUM HYDRATE

Номер: US20210070623A1
Автор: Hernandez Julien, Larcher Olivier
Принадлежит:

The present invention relates to a porous aluminum hydrate, to a process for preparing same and to the use of same as intermediate in the preparation of an alumina or of a mixed oxide based on aluminum, on cerium and on zirconium. The invention also relates to the alumina obtained from the aluminum hydrate. 1. An aluminum hydrate based on a boehmite , which may optionally comprise at least one additional element selected from lanthanum , praseodymium or a mixture of the two elements , characterized in that , after having been calcined in air at a temperature of 900° C. for 2 h , it has:{'sub': 20 nm', '2', '20 nm', '2, 'claim-text': [{'sub': '2', 'is greater than or equal to 10%×VPT-N;'}, {'sub': '2', 'is less than or equal to 60%×VPT-N; and'}], 'a pore volume in the domain of the pores having a size of less than or equal to 20 nm (denoted by VP-N) such that VP-N{'sub': 40-100 nm', '2', '40-100 nm', '2', '2, 'a pore volume in the domain of the pores having a size of between 40 and 100 nm (denoted by VP-N) such that VP-Nis greater than or equal to 20%×VPT-N;'}{'sub': '2', 'VPT-Ndenoting the total pore volume of the aluminum hydrate after calcination in air at 900° C. for 2 h;'}the pore volumes being determined by the nitrogen porosimetry technique.2. The aluminum hydrate as claimed in claim 1 , characterized in that VPT-Nis between 0.65 and 1.20 ml/g.3. The aluminum hydrate as claimed in claim 1 , characterized in that it is in the form of a mixture of a boehmite and of a phase which is not visible in X-ray diffraction.4. The aluminum hydrate as claimed in claim 1 , characterized by a percentage of crystalline phase which is less than or equal to 60%.5. The aluminum hydrate as claimed in claim 1 , characterized in that the boehmite has a mean size of the crystallites of at most 6.0 nm.6. The aluminum hydrate as claimed in claim 1 , characterized in that claim 1 , after having been calcined in air at 900° C. for 2 h claim 1 , it has a (BET) specific surface area of at ...

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Номер записи: 40
11-03-2021 дата публикации

PREPARATION METHOD FOR CYCLOHEXANE DIMETHANOL HAVING HIGH TRANS CONTENT AND CYCLOHEXANE DIMETHANOL PREPARED THEREBY

Номер: US20210070682A1
Автор: Han Joo Hee, KIM Eun Jeong, KIM Ki Don, Lee Jong Kwon, Nam Ho Seong
Принадлежит: HANWHA SOLUTIONS CORPORATION

Provided is a preparation method for a cyclohexane dimethanol (CHDM), which can have a high trans content through particular conditions, additive addition, or reactant addition, which is controlled in a cyclohexane dicarboxylic acid (CHDA) hydrogenation reaction, and a cyclohexane dimethanol prepared thereby. 1. A method for preparing a cyclohexane dimethanol (CHDM) by performing a hydrogenation reaction of a catalyst and a cyclohexane dicarboxylic acid (CHDA) , wherein a weight ratio of the catalyst to the cyclohexane dicarboxylic acid (CHDA) is 1:1 to 1:5.2. The method of claim 1 , wherein at least one selected from a homogeneous additive and a heterogeneous additive is further included in the hydrogenation reaction.3. The method of claim 2 , wherein the homogeneous additive includes at least one selected from the group consisting of ammonium bicarbonate (NHHCO) claim 2 , sodium hydroxide (NaOH) claim 2 , potassium carbonate (KCO) claim 2 , and sodium borohydride (NaBH) claim 2 , and the heterogeneous additive includes at least one selected from the group consisting of zirconia claim 2 , titania claim 2 , ceria claim 2 , silica claim 2 , and magnesia.4. The method of claim 2 , wherein a weight ratio of the homogeneous additive to the catalyst is 1:0.05 to 1:1.5. The method of claim 2 , wherein a weight ratio of the heterogeneous additive to the catalyst is 1:0.5 to 1:3.6. The method of claim 1 , wherein the hydrogenation reaction of the cyclohexane dicarboxylic acid (CHDA) is performed in a temperature range of 200° C. to 280° C.7. The method of claim 1 , wherein the hydrogenation reaction of the cyclohexane dicarboxylic acid (CHDA) is performed in a pressure range of 50 bar to 150 bar.8. The method of claim 1 , wherein the hydrogenation reaction of the cyclohexane dicarboxylic acid (CHDA) is performed for 1 hour to 8 hours.9. The method of claim 1 , wherein the cyclohexane dicarboxylic acid (CHDA) uses a reactant selected from a cis form claim 1 , a trans form ...

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Номер записи: 41
15-03-2018 дата публикации

OIL FREE CRYSTAL GROWTH MODIFIERS FOR THE BAYER PROCESS

Номер: US20180072583A1
Автор: Anderson Marie E., Stigers Dannon
Принадлежит:

Disclosed herein are methods of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising a crystal growth modifier, which is at least one of an acyclic anhydride or an alkyl or alkenyl succinic anhydride, is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the crystal growth modifier. The process does not require the addition of a defoamer/anti-foam agent in order to control foam generated in the process. 1. A method of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream , the method comprising:adding an aqueous emulsion comprising at least one acyclic anhydride to the alumina trihydrate recovery process stream to allow crystallization of the alumina trihydrate crystals from the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils and fuel oils, thereby providing a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the aqueous emulsion comprising at least one acyclic anhydride.2. The method according to wherein the aqueous emulsion is substantially free of surfactants.3. The method according to wherein the aqueous emulsion is substantially free of defoamers or anti-foam agents.4. The method according to wherein the aqueous emulsion is substantially free of polyalkoxylated non-ionic surfactants claim 1 , fatty acids claim 1 , fatty acid salts or combinations thereof.5. The method according to wherein the aqueous emulsion has a volume average particle ...

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Номер записи: 42
19-03-2015 дата публикации

Reforming catalyst

Номер: US20150080212A1
Автор: Fernando Morales Cano, Jens-Henrik Bak Hansen, Martin Østberg, Martin Skov Skjøth-Rasmussen, Thomas Sandahl Christensen
Принадлежит: Haldor Topsoe AS

An egg-shell catalyst consisting of an active compound in the form of an alloy of nickel and one of iridium, rhodium and ruthenium, on a support comprising alumina, zirconia, magnesia, titania or combinations thereof. The catalyst is used in a process for the steam reforming of hydrocarbons.

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Номер записи: 43
24-03-2016 дата публикации

Electrolyte-Separating Membrane for Selective Transfer of Cations Through the Membrane and Process for Manufacturing Said Membrane

Номер: US20160082395A1
Автор: Boulanger Clotilde, Diliberto Sébastien, Guyot Elodie, Kenzari Samuel Philippe Claude, Lecuire Jean-Marie
Принадлежит:

An electrolyte-separating membrane includes a carrier made of a porous and permeable synthetic thermoplastic material that is larger than 0.8 mm in thickness and an active layer made of a material able to induce insertion and deinsertion reactions for selective transfer of cations through the membrane. The active layer is deposited on the carrier and is hermetic. The material of the active layer may in particular be a molybdenum cluster chalcogenide. The invention aims to provide an electrolyte-separating membrane that is able to transfer cations selectively and that may be manufactured with large dimensions. The invention also relates to a cation transfer method employing this membrane and to a process for manufacturing said membrane, in particular by selective laser sintering of a powdered polymer. 114.-. (canceled)15. A membrane for separating electrolytes comprising a support comprising a porous and pervious material and an active layer of a material able to develop insertion and de-insertion reactions for selective transfer of cations through the membrane , the active layer being deposited on the support and sealed , the sealing being evaluated by the absence of detectable transfer of an aqueous solution from one side to the other of the active layer exposed to the solution for a period of more than 6 hours , the membrane acting as a container for the solution , wherein the support is a thermoplastic synthetic material with a thickness of more than 0.8 mm.16. The membrane according to claim 15 , wherein the porosity of the support is between 20% and 60% of the volume fraction.17. The membrane according to claim 15 , wherein the thermoplastic synthetic material is selected from a group including polyamide claim 15 , amide copolymers claim 15 , polyacetates claim 15 , polyethylenes and polyether-ether-ketone.18. The membrane according to claim 15 , wherein the material of the active layer is a metal chalcogenide.19. The membrane according to claim 18 , wherein ...

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Номер записи: 44
14-03-2019 дата публикации

METAL SUBSTRATE FOR CATALYTIC CONVERTER AND CATALYST CARRIER

Номер: US20190078489A1
Автор: Inaguma Tooru, KAKO Takuzo, KASUYA Masayuki, KAWASOE Shinji, KONYA Shogo, OMIZU Masafumi, TSUMURA Yasuhiro
Принадлежит:

A metal substrate for catalytic converter for purifying an exhaust gas includes a honeycomb core with metal flat foil and corrugated foil stacked in layers, and an oxide film having a thickness of 0.1 μm or more and 10 μm or less is formed in a predetermined range including an exposed end surface exposed toward the gas inlet side. The oxide film contains at least a first alumina including α-alumina and a Fe oxide. The α-alumina contains α-alumina with solid-solved Fe and α-alumina with no solid-solved Fe. In the oxide film, the content of the first alumina is 30% by mass or more and 99.5% by mass or less, the content of the Fe oxide is 0.5% by mass or more and 40% by mass or less, and the content of Fe is more than 7% by mass and 35% by mass or less. 1. A metal substrate for catalytic converter for purifying an exhaust gas , comprising a honeycomb core with metal flat foil and corrugated foil stacked in layers , whereinan oxide film having a thickness of 0.1 μm or more and 10 μm or less is formed in a predetermined range including an exposed end in a comprising α-alumina and a Fe oxide;the α-alumina contains α-alumina with solid-solved Fe and α-alumina with no solid-solved Fe;in the oxide film, a content of the first alumina is 30% by mass or more and 99.5% by mass or less, a content of the Fe oxide is 0.5% by mass or more and 40% by mass or less, and a content of Fe is more than 7% by mass and 35% by mass or less; andthe predetermined range is at least 2 mm from the exposed end surface in a direction in which a gas flows.2. The metal substrate for catalytic converter according to claim 1 , whereinthe oxide film further contains at least one type of a second alumina and a Cr oxide, andthe second alumina comprises at least one or more types of γ, θ, χ, δ, η, and κ aluminas.3. The metal substrate for catalytic converter according to claim 1 , wherein claim 1 , when T (μm) represents a thickness of the oxide film and G (% by mass) represents the content of Fe in the ...

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Номер записи: 45
31-03-2022 дата публикации

METHOD AND SYSTEM FOR REMOVING CARBON DIOXIDE FROM AIR

Номер: US20220097004A1
Автор: MAKARUK Aleksander, Szivacz Johannes
Принадлежит:

The invention relates to a method for removing and obtaining carbon dioxide from ambient air, comprising the continuous execution of the following steps: a) bringing ambient air into contact with an aqueous solution of at least one alkali metal or alkaline earth metal for the purpose of absorbing the carbon dioxide into the solution, forming the bicarbonate or carbonate of the at least one metal; b) electrodialysis of the resulting solution using a combination of bipolar ion-exchange membranes and ion-exchange membranes that are selective for mono- and multivalent anions to obtain one solution enriched in (bi-)carbonate anions and one solution depleted in (bi-)carbonate anions, wherein the solution depleted in (bi-)carbonate anions is recycled to step a); c) thermal desorption of the carbon dioxide from the solution, obtained in step b), enriched in (bi-)carbonate anions by means of steam stripping in order to obtain a carbon dioxide-steam mixture and a solution depleted in COwhich is recycled to step (b), wherein a pH is set there of between 7 and 8.5 or between 8 and 9.5; and d) removing water from the obtained carbon dioxide-steam mixture by cooling to condense the steam, and possibly further drying of the carbon dioxide. 1. A method for separating and recovering carbon dioxide from ambient air , comprising the continuous execution of the following steps:a) bringing ambient air into contact with an aqueous solution of at least one alkali metal or alkaline earth metal cation for absorbing the carbon dioxide into the solution, thus forming the bicarbonate or carbonate of the at least one metal;b) electrodialysis of the resulting solution using a combination of bipolar ion-exchange membranes and ion-exchange membranes that are selective for mono- or multivalent anions to obtain one solution enriched with (hydrogen) carbonate ions and one solution depleted of (hydrogen) carbonate ions, wherein the solution depleted of (hydrogen) carbonate ions is recycled to step a ...

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Номер записи: 46
19-03-2020 дата публикации

SYSTEMS FOR AND METHODS FOR IMPROVING MECHANICAL PROPERTIES OF CERAMIC MATERIAL

Номер: US20200087216A1
Автор: Cui Bai, LU Yongfeng, Nastasi Michael, WANG FEI
Принадлежит: NUtech Ventures

Systems for and methods for improving mechanical properties of ceramic material are provided. The system comprises a heat source for heating the ceramic material to a temperature greater than a brittle-to-ductile transition temperature of the ceramic material; a probe for mounting the ceramic material and configured to extend the ceramic material into the heat source; a plasma-confining medium and a sacrificial layer disposed between the ceramic material and the plasma-confining medium; and an energy pulse generator such as a laser pulse generator. The sacrificial layer is utilized to form plasma between the ceramic material and the plasma-confining medium. The method comprises heating ceramic material to a temperature greater than a brittle-to-ductile transition temperature of the ceramic material and subjecting the ceramic material to energy pulses via a sacrificial layer and a plasma-confining medium whereby a plasma of the sacrificial coating forms between the ceramic material and a plasma-confining medium. 1. A system for imparting fatigue resistance to ceramic material comprising:a heat source for heating the ceramic material to a temperature greater than a brittle-to-ductile transition temperature of the ceramic material;a probe for mounting the ceramic material at a three-dimensional stage, the probe configured to extend the ceramic material into the heat source;a plasma-confining medium and a sacrificial layer, the sacrificial layer disposed between the ceramic material and the plasma-confining medium, the sacrificial layer for forming plasma between the ceramic material and the plasma-confining medium when heated to the temperature greater than the brittle-to-ductile transition temperature of the ceramic material and exposed to laser pulses; anda laser pulse generator for subjecting the ceramic material to laser pulses via the sacrificial layer and the plasma-confining medium such that the laser pulse generator is configured to pulse laser energy through ...

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Номер записи: 47
09-04-2015 дата публикации

SELECTIVE SURFACE IMPREGNATION METHOD FOR CATALYTICALLY ACTIVE MATERIALS ON PARTICULATE CATALYST SUPPORT USING MUTUAL REPULSIVE FORCE AND SOBLUBILITY DIFFERENCE BETWEEN HYDROPHILIC SOLVENT AND HYDROPHOBIC SOLVENT

Номер: US20150099622A1
Автор: AHN Seong Mi, JANG Min Su, Ko Chang Hyun, SEO Gyeong Ju
Принадлежит:

A method for preparing a catalyst having catalytically active materials selectively impregnated or supported only in the surface region of the catalyst particle using the mutual repulsive force of a hydrophobic solution and a hydrophilic solution and the solubility difference to a metal salt precursor between the hydrophobic and hydrophilic solutions. The hydrophobic solvent is a C2-C6 alcohol. The hydrophobic solvent is introduced into the catalyst support and then removed of a part of the pores connected to the outer part of the catalyst particle by drying under appropriate conditions. Then, a hydrophilic solution containing a metal salt is introduced to occupy the void spaces removed of the hydrophobic solvent, and the catalyst particle is dried at a low rate to selectively support or impregnate the catalytically active material or the precursor of the catalytically active material only in the outer part of the catalyst particle. 1. A selective surface supporting method for catalytically active materials using a repulsive force between a hydrophilic solvent and a hydrophobic solvent , the method comprising:{'b': '10', 'a catalyst support preparation step S of preparing a spherical or cylindrical porous inorganic oxide as a catalyst support;'}{'b': '100', 'a first immersion step S of immersing the catalyst support in a hydrophobic, first solvent to fill in surface pores and inner pores of the catalyst support with the hydrophobic, first solvent;'}{'b': '200', 'a first drying step S of performing a drying process to eliminate the hydrophobic, first solvent from the inner pores under the surface of the catalyst support, thus allowing the hydrophobic, first solvent to remain in the pores in an inner central region of the catalyst support;'}{'b': '300', 'a second immersion step S of dissolving catalytically active materials or a precursor of the catalytically active material in a hydrophilic, second solvent to prepare a hydrophilic solution and then immersing the ...

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Номер записи: 48
12-05-2022 дата публикации

ALUMINUM OXIDE-FORMING COMPOSITION AND METHOD FOR PRODUCING SAME, AND POLYOLEFIN-BASED POLYMER NANOCOMPOSITE CONTAINING ZINC OXIDE PARTICLES OR ALUMINUM OXIDE PARTICLES AND METHOD OF PRODUCING SAME

Номер: US20220144657A1
Автор: Haga Kenichi, Inaba Koichiro, Naka Toshio, TANIIKE Toshiaki, Toyota Kouji
Принадлежит:

A method for producing aluminum oxide is provided. The method uses an aluminum-oxide-forming agent containing a partially hydrolyzed aluminum alkyl compound containing an aluminum trialkyl or a mixture thereof, and a solvent. It is thus possible to produce an aluminum oxide thin film or aluminum oxide particles on or in a substrate that is not resistant to polar solvents. A method of producing a polyolefin-based polymer nanocomposite containing zinc oxide particles or aluminum oxide particles using a solution containing a partially hydrolyzed zinc alkyl or a solution containing a partially hydrolyzed aluminum alkyl is also provided. The polyolefin-based polymer nanocomposite contains a polyolefin substrate and zinc oxide particles or aluminum oxide particles, and does not contain a dispersant. The zinc oxide particles or aluminum oxide particles have an average particle size of less than 100 nm. 140.-. (canceled)41. A method for producing a composition for forming a particulate or thin film-shaped aluminum oxide , which is comprised of a solution containing an alkyl aluminum partial hydrolyzate , the method comprising: adding water to a solution containing an alkyl aluminum compound and a non-polar organic solvent at a molar ratio of 0.5 to 1.4 relative to aluminum in the alkyl aluminum compound to produce the solution containing the alkyl aluminum partial hydrolyzate , wherein the alkyl aluminum compound is comprised of a trialkyl aluminum or a mixture thereof , wherein the alkyl groups may be the same or different and have 4 to 12 carbon atoms.43. A composition for forming a particulate or thin film-shaped aluminum oxide , which is comprised of a solution containing an alkyl aluminum partial hydrolyzate and a non-polar organic solvent , wherein the alkyl groups in the alkyl aluminum partial hydrolyzate may be the same or different and have 4 to 12 carbon atoms , the molar ratio of alkyl groups relative to aluminum atoms falls within the range of 0.2 to 2 , and the ...

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Номер записи: 49
12-05-2022 дата публикации

METHOD FOR PRODUCING METHYL ACETATE BY MEANS OF CARBONYLATION OF DIMETHYL ETHER

Номер: US20220144748A1
Автор: LIU Hongchao, Liu Shiping, Liu Yong, Liu Zhongmin, Ma Xiangang, NI Youming, ZHU Wenliang
Принадлежит:

Disclosed by the present application is a method for producing methyl acetate by means of the carbonylation of dimethyl ether. The method comprises: passing dimethyl ether and a feed gas comprising carbon monoxide through a reactor loaded with a solid acid catalyst for reaction so as to produce methyl acetate, the molar ratio of carbon monoxide to dimethyl ether being 0.05:1-0.5:1. The described method has the advantages of a low molar ratio of carbon monoxide to dimethyl ether, a high conversion rate of carbon monoxide, a small gas circulation amount, low operation costs and so on. 1. A method for producing methyl acetate by carbonylation of dimethyl ether comprising , feeding dimethyl ether and a feeding gas containing carbon monoxide into a reactor equipped with a solid acid catalyst to react to produce methyl acetate;wherein, a molar ratio of carbon monoxide to dimethyl ether ranges from 0.05:1 to 0.5:1.2. The method according to claim 1 , wherein the molar ratio of carbon monoxide to dimethyl ether ranges from 0.08:1 to 0.5:1.3. The method according to claim 2 , wherein the molar ratio of carbon monoxide to dimethyl ether ranges from 0.1:1 to 0.5:1.4. The method according to claim 1 , wherein the feeding gas containing carbon monoxide comprises from 15% to 100% carbon monoxide by volume.5. The method according to claim 1 , wherein the feeding gas containing carbon monoxide further comprises at least one of hydrogen claim 1 , nitrogen claim 1 , helium claim 1 , argon claim 1 , carbon dioxide claim 1 , methane and ethane.6. The method according to claim 1 , wherein the solid acid catalyst is at least one of catalysts for carbonylation of dimethyl ether.7. The method according to claim 1 , wherein the solid acid catalyst comprises at least one of a zeolite molecular sieve and a modified zeolite molecular sieve;wherein, a framework type of the zeolite molecular sieve is one of FER, MFI, MOR, ETL, MFS, MTF, and EMT; and a modification refers to at least one of ...

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Номер записи: 50
12-05-2022 дата публикации

Aluminum oxide-forming composition and method for producing same, and polyolefin-based polymer nanocomposite containing zinc oxide particles or aluminum oxide particles and method of producing same

Номер: US20220145042A1
Автор: Kenichi Haga, Koichiro Inaba, Kouji Toyota, Toshiaki TANIIKE, Toshio Naka
Принадлежит: Tosoh Finechem Corp

A method for producing aluminum oxide is provided. The method uses an aluminum-oxide-forming agent containing a partially hydrolyzed aluminum alkyl compound containing an aluminum trialkyl or a mixture thereof, and a solvent. It is thus possible to produce an aluminum oxide thin film or aluminum oxide particles on or in a substrate that is not resistant to polar solvents. A method of producing a polyolefin-based polymer nanocomposite containing zinc oxide particles or aluminum oxide particles using a solution containing a partially hydrolyzed zinc alkyl or a solution containing a partially hydrolyzed aluminum alkyl is also provided. The polyolefin-based polymer nanocomposite contains a polyolefin substrate and zinc oxide particles or aluminum oxide particles, and does not contain a dispersant. The zinc oxide particles or aluminum oxide particles have an average particle size of less than 100 nm.

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Номер записи: 51
13-04-2017 дата публикации

Amorphous mesoporous alumina with an optimized pore distribution, and process for its preparation

Номер: US20170101324A1
Автор: Celine Bouvry, Malika Boualleg
Принадлежит: IFP Energies Nouvelles IFPEN

An amorphous mesoporous alumina with a median mesopore diameter by volume of 16 nm or more, a mesopore volume of 0.5 mL/g or more, and a total pore volume of more than 0.75 mL/g. A process for preparing said alumina, comprising: a) precipitating a basic precursor and an acidic precursor, at least one of which comprises aluminium, at a pH of 8.5 to 10.5, a temperature of 20° C. to 90° C. and for 2 minutes to 30 minutes, with a state of advance of 5% to 13%; b) heating the suspension; c) a second precipitating by adding another basic precursor and acidic precursor, at least one of which comprises aluminium, at a pH of 8.5 to 10.5, a temperature of 40° C. to 90° C. and for 2 to 50 minutes, with a state of advance of 87% to 95%; d) filtration; e) drying; f) shaping; g) heat treatment.

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Номер записи: 52
19-04-2018 дата публикации

Method Of Producing Organohalosilanes

Номер: US20180105542A1
Автор: Gohndrone John Michael
Принадлежит:

A method for producing an organohalosilanes comprising reacting an organic compound comprising a halogen-substituted or unsubstituted alkane, a halogen-substituted or unsubstituted alkene, or an aromatic compound and at least one hydridohalosilane of formula RSiHX, wherein each R is independently C--C-hydrocarbyl or C--C-hologen-substituted hydrocarbyl, X is fluoro, chloro, bromo, or iodo, n is 0, 1, or 2, m is 1, 2 or 3, and m+n=1, 2 or 3, in the presence of a heterogeneous catalyst comprising an oxide of one or more of the elements Sc, Y, Ti, Zr, Hf, B, Al, Ga, In, C, Si, Ge, Sn, or Pb, at a temperature greater than 100° C., and at a pressure of at least 690 kPa, to produce a crude reaction product comprising the organohalosilane. 1. A method for producing an organohalosilane , the method comprising:{'sub': n', 'm', '4-m-n', '1', '14', '1', '14, 'reacting an organic compound comprising a halogen-substituted or unsubstituted alkane, a halogen-substituted or unsubstituted alkene, or an aromatic compound and at least one hydridohalosilane of formula RSiHX, wherein each R is independently C-Chydrocarbyl or C-Chologen-substituted hydrocarbyl, X is fluoro, chloro, bromo, or iodo, n is 0, 1, or 2, m is 1, 2 or 3, and m+n=1, 2 or 3, in the presence of a heterogeneous catalyst comprising an oxide of one or more of the elements Sc, Y, Ti, Zr, Hf, B, Al, Ga, In, C, Si, Ge, Sn, or Pb, at a temperature greater than 100° C., and at a pressure of at least 690 kPa, to produce a crude reaction product comprising the organohalosilane.'}2. The method of wherein the heterogeneous catalyst comprises alumina claim 1 , zirconium dioxide claim 1 , an oxide comprising Zr and B claim 1 , an oxide comprising Al and B claim 1 , or an oxide comprising Al and Si.3. The method of claim 1 , wherein the heterogeneous catalyst comprises an oxide of two or more of the elements Sc claim 1 , Y claim 1 , Ti claim 1 , Zr claim 1 , Hf claim 1 , B claim 1 , Al claim 1 , Ga claim 1 , In claim 1 , C claim ...

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Номер записи: 53
20-04-2017 дата публикации

TRANSPARENT CERAMIC WITH COMPLEX GEOMETRY

Номер: US20170107154A1
Автор: DROUIN William J., HAVEN Drew T., ZANELLA Steven A.
Принадлежит:

A ceramic product includes a transparent ceramic panel having a non-planar geometry including a bend having a slippage plane, an increased haze, a non-uniform thickness, or a combination thereof. A method includes providing a transparent ceramic panel, heating the panel, bending the panel to conform to a non-planar geometry. 1. A ceramic product comprising a transparent ceramic panel having a non-planar geometry including a bend , having at the bend a thickness variation , a dislocation density variation , or a combination thereof.2. The ceramic product of claim 1 , wherein the thickness variation includes a thickness that decreases approaching an apex of the bend.3. The ceramic product of claim 1 , wherein the non-planar geometry includes at least two bends.4. The ceramic product of claim 1 , wherein the ceramic product is polished.5. The ceramic product of claim 1 , wherein the ceramic product includes a transparent ceramic material comprising a sapphire claim 1 , an AlON claim 1 , or a spinel.6. The ceramic product or method of claim 5 , wherein the ceramic product includes a transparent ceramic material comprising a sapphire.7. The ceramic product of claim 6 , wherein the sapphire comprises a major surface that lies along an a-plane or a c-plane.8. The ceramic product of claim 1 , wherein the non-planar geometry has a radius of curvature of no greater than 120 cm.9. The ceramic product of claim 1 , wherein the transparent ceramic panel claim 1 , prior to bending claim 1 , has a length of at least 30 cm.10. The ceramic product of claim 1 , wherein the transparent ceramic panel claim 1 , prior to bending claim 1 , has a width of at least 10 cm.11. The ceramic product of claim 1 , wherein the ceramic product includes a region of low dislocation density and a region of high dislocation density claim 1 , wherein the region of high dislocation density has a dislocation density of at least 10dislocation lines per cm.12. The ceramic product of claim 11 , wherein the ...

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Номер записи: 54
09-06-2022 дата публикации

MODIFIED ULTRA-STABLE Y (USY) ZEOLITE CATALYST FOR DEALKYLATION OF AROMATICS

Номер: US20220176357A1
Автор: Hodgkins Robert Peter, KOSEOGLU Omer Refa, Uchida Koji, Watabe Mitsunori
Принадлежит:

The present disclosure relates to a process for the hydrodealkylation of aromatic rich hydrocarbon streams to produce benzene, toluene and mixed xylenes (BTX), with high selectivity towards high value xylenes. The process uses catalysts containing a framework-substituted zirconium and/or titanium and/or hafnium-modified ultra-stable Y (USY) type zeolite. 1. A process for hydrodealkylating a hydrocarbon feed to produce a dealkylated product , the process comprising the step of reacting the hydrocarbon feed with a hydrogen feed in the presence of a dealkylation catalyst , wherein the hydrocarbon feed comprises aromatic hydrocarbons with nine or more carbon atoms (C9+ aromatics; and wherein the dealkylation catalyst is a framework-substituted ultra-stable Y (USY)-type zeolite in which a portion of aluminum atoms constituting a zeolite framework thereof is substituted with zirconium atoms and/or titanium and/or hafnium atoms.2. The process according to claim 1 , further comprising the steps of:introducing a hydrocarbon feed and a hydrogen feed to a dealkylation reactor, wherein the dealkylation reactor comprises a dealkylation catalyst; andreacting the hydrocarbon feed with the hydrogen feed in the presence of the dealkylated catalyst to produce a dealkylated product.3. The process according to claim 1 , wherein the framework-substituted USY-type zeolite in the catalyst comprises zirconium atoms and titanium atoms.4. The process according to claim 1 , wherein the framework-substituted USY-type zeolite in the catalyst comprises from about 0.1 to about 5% by mass zirconium and/or titanium and/or hafnium atoms claim 1 , each calculated as the oxide basis.5. The process according to claim 1 , wherein the framework-substituted USY-type zeolite in the catalyst further includes a support comprising inorganic oxides selected from the group consisting of alumina claim 1 , silica-alumina and combinations thereof.6. The process according to claim 1 , wherein the framework- ...

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Номер записи: 55
30-04-2015 дата публикации

METHOD FOR PRODUCING ALUMINUM COMPOSITE MATERIAL

Номер: US20150119229A1
Автор: MINAKI Hajime, Wakimoto Yoshiki
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

Provided is a method of producing an aluminum composite material, the method including: a decalcification treatment step of eluting a calcium oxide component from cement to form decalcified cement having a reduced content of the calcium oxide component; and an aluminum oxide formation step of bringing molten aluminum into contact with the decalcified cement to replace, among metal oxide components contained in the decalcified cement, metal oxide components other than the calcium oxide component, in particular, a silicon dioxide component, with aluminum oxide. 1. A method of producing an aluminum composite material , the method comprising:performing a decalcification treatment by eluting a calcium oxide component from cement to form decalcified cement having a reduced content of the calcium oxide component; andforming an aluminum oxide by bringing molten aluminum into contact with the decalcified cement to replace, among metal oxide components contained in the decalcified cement, metal oxide components other than calcium oxide with aluminum oxide.2. The method according to claim 1 , wherein the decalcified cement has a ratio of a mass of a silicon dioxide component Wto a sum total of the mass of the silicon dioxide component Wand a mass of the calcium oxide component W claim 1 , (W+W) claim 1 , the ratio being represented as R(=W/(W+W)) claim 1 , of 0.75 or more.3. The method according to claim 1 , wherein the decalcification treatment comprises a step of eluting the calcium oxide component from the cement through acid treatment of the cement.4. The method according to claim 1 , further comprising purifying by heating the decalcified cement to remove impurities attached to a surface of the decalcified cement claim 1 ,wherein the forming of the aluminum oxide comprises contacting the molten aluminum with the decalcified cement in which the impurities are removed from the surface in the purification.5. The method according to claim 1 , wherein claim 1 , in the forming ...

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Номер записи: 56
09-06-2022 дата публикации

PROCESS AND PLANT FOR THERMAL DECOMPOSITION OF ALUMINIUM CHLORIDE HYDRATE INTO ALUMINIUM OXIDE

Номер: US20220177321A1
Автор: PERANDER Linus, SCHNEIDER GUNTER, Sturm Peter, Von Garnier Agnes
Принадлежит:

A process and its relating plant for thermal conversion of aluminum chloride hydrate into aluminum oxide and gaseous hydrogen chloride. In a first step, aluminum chloride hydrate is fed into a decomposition reactor where it is heated to a temperature between 120 and 400° C. Afterwards, the partially decomposed aluminum chloride hydrate is finally calcined to aluminum oxide at a temperature between 850 and 1200° C. in a second reactor. The aluminum chloride hydrate is admixed with aluminum oxide in an intensive mixer with a mass ratio between 1:1 and 10:1 aluminum chloride hydrate to aluminum oxide for using a fluidized bed reactor as a decomposition reactor. 116.-. (canceled)17. A process for thermal conversion of aluminum chloride hydrate into aluminum oxide and gaseous hydrogen chloride by partially decomposing the aluminum chloride hydrate into a decomposition reactor by heating to a temperature between 120 and 400° C. and then calcining the partially decomposed aluminum chloride hydrate in the calcining reactor to aluminum oxide at a temperature between 850 and 1200° C. , wherein the aluminum chloride hydrate is admixed with aluminum oxide in an intensive mixer with a mass ratio between 1:1 and 10:1 aluminum chloride hydrate to aluminum oxide and that the resulting mixture is fed into the decomposition reactor which is a fluidized bed reactor.18. The process according to claim 17 , wherein at least parts of the aluminum oxide from the calcination is recirculated into the decomposition.19. The process according to claim 18 , wherein the recirculated aluminum oxide features a temperature between 600 and 1100° C. into the decomposition reactor.20. The process according to claim 17 , wherein at least parts of the aluminum oxide from the decomposition is recirculated into the decomposition.21. The process according to claim 20 , wherein the recirculated aluminum oxide for the admixing in the mixer has a temperature below 100° C.22. The process according to claim 17 , ...

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Номер записи: 57
13-05-2021 дата публикации

METHOD FOR PRODUCING POROUS METAL OXIDE

Номер: US20210139342A1
Автор: HEPBURN Robert, TSUBOTA Shogo
Принадлежит: FUJIMI INCORPORATED

Provided is a method for producing a porous metal oxide. The method includes: preparing a slurry by mixing a metal source, a pore forming agent and an aqueous solvent; drying the slurry to obtain a metal oxide precursor; and sintering the metal oxide precursor to generate a porous metal oxide. The metal source is an organometallic compound or hydrolyzate thereof containing a metal that makes up the porous metal oxide; the pore forming agent is an inorganic compound that generates a gas by decomposing at a temperature equal to or lower than a temperature at which the metal oxide precursor is sintered; and the slurry is prepared using 50 parts by weight or more of the pore forming agent with respect to 100 parts by weight of the metal source. 1. A method for producing a porous metal oxide , the method comprising:preparing a slurry by mixing a metal source, a pore forming agent and an aqueous solvent;drying the slurry to obtain a metal oxide precursor; andsintering the metal oxide precursor to generate a porous metal oxide, whereinthe metal source is an organometallic compound or hydrolyzate thereof containing a metal that makes up the porous metal oxide;the pore forming agent is an inorganic compound that generates a gas by decomposing at a temperature equal to or lower than the temperature at which the metal oxide precursor is sintered; andthe slurry is prepared using 50 parts by weight or more of the pore forming agent with respect to 100 parts by weight of the metal source.2. The method according to claim 1 , wherein the organometallic compound is a metal alkoxide.3. The method according to claim 2 , wherein the metal alkoxide includes at least one alkoxide selected from the group consisting of aluminum alkoxides claim 2 , zirconium alkoxides and titanium alkoxides.4. The method according to claim 1 , wherein the pore forming agent includes at least one compound selected from the group consisting of ammonium salts claim 1 , carbonate salts and bicarbonate salts.5. ...

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Номер записи: 58
05-05-2016 дата публикации

SPINEL FORMING REFRACTORY COMPOSITIONS, THEIR METHOD OF PRODUCTION AND USE THEREOF

Номер: US20160122249A1
Автор: SOUDIER JEROME
Принадлежит: Calderys France

A particulate composition for use in alumina-magnesia spinel forming dry vibratable mixtures may include, based on the total weight of the particulate composition, from 95 to 99.9 wt % of a mixture of particulate AlOand particulate MgO, and from 0.1 to 5 wt % binding agent, wherein at least a portion of the particles of said mixture of particulate AlOand particulate MgO is present in the particulate composition as a coating of particles on the surface of other particles. Methods of producing and using the particulate composition are also described. 116-. (canceled)17. A particulate composition for use in an alumina-magnesia spinel forming dry vibratable mix , the composition comprising , based on the total weight of the particulate composition:{'sub': 2', '3, 'from 95 to 99.9 wt % of a mixture of particulate AlOand particulate MgO; and'}from 0.1 to 5 wt % binding agent,{'sub': 2', '3, 'wherein at least a portion of the particles of said mixture of particulate AlOand particulate MgO is present in the particulate composition as a coating of particles on the surface of other particles.'}18. The particulate composition of claim 17 , wherein the particulate composition has the following particle size distribution:from 35 to 65 wt % of the particulate composition are particles having a particle size of 1 mm or above;from 45 to 75 wt % of the particulate composition are particles having a particle size of 0.5 mm or above;from 65 to 95 wt % of the particulate composition are particles having a particle size of 0.045 mm or above; andthe balance being made up of binding agent,{'sub': 2', '3', '2', '3, 'wherein at least a portion of the particulate composition are first metal oxide particles selected from AlO, MgO, or both, and having a particle diameter of 0.25 mm or below, which are present in the particulate composition as part of a coating on second metal oxide particles selected from AlOand MgO and having a particle diameter of 0.5 mm or above.'}19. The particulate ...

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Номер записи: 59
07-05-2015 дата публикации

Method of Preparing an Alumina Catalyst Support and Catalyst for Dehydrogenation Reactions, and its Use

Номер: US20150126792A1
Автор: Hooks Patricia A., Kauffman James W., Nair Balamurali Krishna R.
Принадлежит:

A method of forming a dehydrogenation catalyst support is carried out by forming a mixture comprising a bayerite aluminum hydroxide (Al(OH)) and water into a support material. The support material is particulized. The particulized support material is compressed to a pressure of at least 5,000 psig to form a shaped body. The shaped body is calcined in pure steam at a temperature of at least 750° C. for at least 0.25 hours to form a catalyst support having an average pore diameter of 200 Å or greater. The catalyst support can then be treated with a dehydrogenation catalyst component so that the catalyst support contains the dehydrogenation catalyst component to form a dehydrogenation catalyst that can then be used by contacting a hydrocarbon feed with the catalyst within a reactor in the presence of steam under dehydrogenation reaction conditions suitable to form dehydrogenated hydrocarbon products. 1. A method of forming a dehydrogenation catalyst support comprising:{'sub': '3', 'forming a mixture comprising a bayerite aluminum hydroxide (Al(OH)) and water into a support material;'}particulizing the support material;compressing the particulized support material to a pressure of at least 5,000 psig to form a shaped body; andcalcining the shaped body in pure steam at a temperature of at least 750° C. for at least 0.25 hours to form a catalyst support having an average pore diameter of 200 Å or greater.2. The method of claim 1 , wherein:the calcination is conducted at a temperature of from 750° C. to 1000° C.3. The method of claim 1 , wherein:the calcination is conducted from 2 hours to 10 hours at a temperature of from 750° C. to 1000° C.4. The method of claim 1 , wherein:the particulized support material is compressed to a pressure of from 5,000 psig to 40,000 psig.5. The method of claim 1 , wherein:the particulized support material is compressed to a pressure of from 14,500 psig to 15,500 psig; and whereinthe calcination is conducted in pure steam from 0.25 hours to ...

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Номер записи: 60
04-05-2017 дата публикации

AMORPHOUS MESOPOROUS ALUMINA WITH HIGH CONNECTIVITY AND PRODUCTION METHOD THEREOF

Номер: US20170121180A1
Автор: BOUALLEG Malika, Bouvry Celine
Принадлежит: IFP ENERGIES NOUVELLES

An amorphous mesoporous alumina having a connectivity (Z) greater than 2.7 is described. The present invention also relates to the process for preparing the said alumina, comprising at least one precipitation step of at least one aluminium salt, at least one heating step of the suspension obtained, a thermal treatment step to form the alumina gel, a gentle drying step or spray drying step, a moulding step of the powder obtained, and a final thermal treatment step in order to obtain the alumina. 1. Amorphous mesoporous alumina having a connectivity (Z) greater than 2.7 , the connectivity being determined from nitrogen adsorption/desorption isotherms.2. Alumina according to claim 1 , having a connectivity between 3 and 7.3. Alumina according to claim 1 , having a BET specific surface between 50 and 450 m/g.4. Alumina according to claim 1 , having a mesopore volume greater than or equal to 0.5 ml/g measured from the nitrogen saturation adsorption isotherm.5. Process for preparing the said alumina according to claim 1 , the said process comprising at least the following steps:{'sub': 2', '3, 'a) at least one first alumina precipitation step, in an aqueous reaction medium, of 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 precursor comprises aluminium, the relative flow rate of the acidic and basic precursors is chosen so as to obtain a pH of the reaction medium between 8.5 and 10.5, and the flow rate of the acidic and basic precursor or precursors containing aluminium is regulated so as to obtain a rate of progress of the said first step between 40 and 100%, the rate of progress being defined as the proportion of alumina formed as AlOequivalent during the first precipitation step with ...

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Номер записи: 61
04-05-2017 дата публикации

GEL WITH HIGH DISPERSIBILITY AND METHOD FOR PREPARING SAME

Номер: US20170121181A1
Автор: BOUALLEG Malika, Bouvry Celine, EUZEN Patrick
Принадлежит: IFP ENERGIES NOUVELLES

A novel alumina gel is described having an elevated dispersibility index, and in particular a dispersibility index greater than %, a crystallite size between and nm, and a sulphur content between % and % by weight, and a sodium content between % and % by weight, the weight percentages being expressed in relation to the total mass of alumina gel. 1. Alumina gel having a dispersibility index greater than 70% , a crystallite size between 1 and 35 nm , and a sulphur content between 0.001% and 2% by weight , and a sodium content between 0.001% and 2% by weight , the weight percentages being expressed in relation to the total mass of alumina gel.2. Alumina gel according to having a dispersibility index between 80 and 100%.3. Method of preparing the alumina gel according to claim 1 , said method comprising at least the following steps:{'sub': 2', '3, 'a) at least a first step of precipitating alumina, in an aqueous reaction medium, of at least one basic precursor selected from sodium aluminate, potassium aluminate, ammonia, sodium hydroxide and potassium hydroxide and of 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 includes aluminium, the relative feed rate of the acidic and basic precursors is chosen so as to obtain a pH of the reaction medium between 8.5 and 10.5 and the feed rate of the acidic and basic precursor(s) containing aluminium is adjusted so as to obtain a progression rate of said first step between 40 and 100%, the progression rate being defined as the proportion of alumina formed in AlOequivalent during said first precipitation step relative to the total quantity of alumina formed at the end of the precipitation step(s), said first step taking place at a temperature between 10 and 50° C., and for a duration of between 2 minutes and 30 minutes,'}b) a step of heat treating the suspension obtained ...

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Номер записи: 62
04-05-2017 дата публикации

CALCINATION PROCESSES FOR PREPARING VARIOUS TYPES OF ALUMINA

Номер: US20170121182A1
Автор: ALIZADEH Ebrahim, BOUFFARD Jonathan, DUMONT Hubert
Принадлежит: ORBITE TECHNOLOGIES INC.

There are provided processes for converting alumina into α-AlOor transition alumina that comprise heating the alumina at a temperature of about 900° C. to about 1200° C. in the presence of steam and optionally at least one gas under conditions suitable to obtain the α-AlOor transition alumina. For example, the alumina can comprise a transition alumina (such as γ-AlO), an amorphous alumina or a mixture thereof. 1. A process for converting alumina into α-AlOor transition alumina , said process comprising heating said alumina at a temperature of about 950° C. to about 1150° C. in the presence of steam and optionally at least one gas chosen from air , argon , nitrogen , carbon dioxide , hydrogen and hydrochloric acid , under conditions suitable to obtain said α-AlOor transition alumina.2. The process of claim 1 , wherein said alumina is heated at a temperature of about 950° C. to about 1100° C.3. The process of claim 1 , wherein said alumina is heated at a temperature of about 1100° C. to about 1150° C.4. The process of claim 1 , wherein said alumina is heated at a temperature of about 1050° C. to about 1080° C.5. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 10 hours.6. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 8 hours.7. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 6 hours.8. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 4 hours.9. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 3 hours.10. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 2 hours.11. The process of any one of to claim 1 , wherein said alumina is heated at said temperature for less than about 1 hour.12. The process of any one ...

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Номер записи: 63
04-05-2017 дата публикации

THERMAL DECOMPOSITION OF MAGNESIUM CHLORIDE

Номер: US20170121739A1
Автор: BOKHOVE Jeroen, DE HAAN André Banier, LAKSMANA Fesia Lestari
Принадлежит: Purac Biochem BV

A method for conversion of magnesium chloride into magnesium oxide and HCl, comprising the steps of 1. Method for conversion of magnesium chloride into magnesium oxide and HCl , comprising the steps ofproviding a magnesium chloride compound to a thermohydrolysis reactor, the reactor being at a temperature of at least 300° C.,{'sub': 2', '2, 'withdrawing MgO from the thermohydrolysis reactor in solid form, and withdrawing a HCl containing gas stream from the thermohydrolysis reactor, wherein the magnesium chloride compound provided to the thermohydrolysis reactor is a solid magnesium chloride compound which comprises at least 50 wt. % of MgCl.4HO.'}2. Method according to claim 1 , wherein the magnesium chloride compound consists for at least 60 wt. % of MgCl.4HO.3. Method according to claim 1 , wherein the magnesium chloride compound comprises less than 30 wt. % of magnesium chloride hexahydrate and/or less than 40 wt. % of the total of magnesium chloride anhydrate claim 1 , magnesium chloride monohydrate claim 1 , and magnesium chloride dihydrate.4. Method according to claim 1 , wherein the thermohydrolysis reactor is at a temperature of at least 350° C. and/or at a temperature below 1000° C.5. Method according to claim 1 , wherein the themohydrolysis is carried out in the presence of a gas stream.6. Method according to claim 1 , wherein the thermohydrolysis reactor is a tube reactor wherein the magnesium chloride compound enters the reactor at or near one end of the reactor claim 1 , further indicated as the feed end claim 1 , and product magnesium oxide is withdrawn at or near the other end of the reactor claim 1 , further indicated as the product end claim 1 , while a gas stream enters the reactor at or near the product end claim 1 , and a gas stream comprising HCl is withdrawn at or near the feed end.7. Method according to claim 1 , comprising the steps of{'sub': 2', '2, 'subjecting a magnesium chloride solution to a drying step at a temperature of 100-160° C. ...

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Номер записи: 64
14-05-2015 дата публикации

COMPOSITE COMPOSITION FOR TURBINE BLADE TIPS, RELATED ARTICLES, AND METHODS

Номер: US20150132605A1
Автор: Gray Dennis Michael, Krishnamurthy Anand, Kumar Sundeep, Onal Kivilcim, Parakala Padmaja, Subramanian Pazhayannur Ramanathan
Принадлежит: GENERAL ELECTRIC COMPANY

A composite composition that includes an MCrAlX alloy and a nano-oxide ceramic is disclosed. In the formula, M includes nickel, cobalt, iron, or a combination thereof, and X includes yttrium, hafnium, or a combination thereof, from about 0.001 percent to about 2 percent by weight of the alloy. The amount of the nano-oxide ceramic is greater than about 40 percent, by volume of the composition. A protective covering that includes the composite composition is also disclosed. The protective covering can be attached to a tip portion of a blade with a braze material. A method for joining a protective covering to a tip portion of a blade, and a method for repair of a blade, are also provided. 1. A composite composition , comprising:an MCrAlX alloy, wherein M comprises nickel, cobalt, iron, or a combination thereof, and X comprises, by weight of the alloy, from about 0.001 percent to about 2 percent yttrium, hafnium, or a combination thereof; anda nano-oxide ceramic in an amount greater than about 40 percent, by volume of the composition.2. The composite composition of claim 1 , wherein the nano-oxide ceramic comprises alumina claim 1 , zirconia claim 1 , hafnia claim 1 , yttria claim 1 , titania claim 1 , tantala claim 1 , terbia claim 1 , ytterbia claim 1 , dysprosia claim 1 , or a combination thereof.3. The composite composition of claim 1 , wherein the nano-oxide ceramic is present in an amount claim 1 , by volume of the composition claim 1 , from about 50 percent to about 95 percent.4. The composite composition of claim 1 , wherein the nano-oxide ceramic comprises particles of an average particle size less than about 200 nanometers.5. The composite composition of claim 4 , wherein the average particle size ranges between about 5 nanometers to about 100 nanometers.6. The composite composition of claim 1 , wherein the nano-oxide ceramic comprises particles having a bimodal particle size distribution.7. The composite composition of claim 1 , wherein X comprises from about ...

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Номер записи: 65
11-05-2017 дата публикации

Amorphous mesoporous and macroporous alumina with an optimized pore distribution, and process for its preparation

Номер: US20170129781A1
Автор: Celine Bouvry, Malika Boualleg
Принадлежит: IFP Energies Nouvelles IFPEN

The invention concerns a process for the preparation of an amorphous mesoporous and macroporous alumina, comprising at least one step for dissolving an acidic precursor of aluminium, a step for adjusting the pH by adding at least one basic precursor to the suspension obtained in step a), a step for co-precipitation of the suspension obtained at the end of step b) by adding at least one basic precursor and at least one acidic precursor to the suspension, a filtration step, a drying step, a shaping step and a heat treatment step. The invention also concerns an amorphous mesoporous and macroporous alumina with a bimodal pore structure having: a specific surface area S BET of more than 100 m 2 /g; a median mesopore diameter, by volume determined by mercury intrusion porosimetry, of 18 nm or more; a median macropore diameter, by volume determined by mercury intrusion porosimetry, in the range 100 to 1200 nm, limits included; a mesopore volume, as measured by mercury intrusion porosimetry, of 0.7 mL/g or more; and a total pore volume, as measured by mercury porosimetry, of 0.8 mL/g or more.

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Номер записи: 66
02-05-2019 дата публикации

OLIGOMERIZATION PROCESS INVOLVING CRYSTALLINE MOLECULAR SIEVE

Номер: US20190127293A1
Автор: CHELLIAHN BENNET, Ravishankar Raman, Sriganesh Gandham, SUDARSHAN REDDY RAGIREDDY, VENKAT CHALAPATHY RAO PEDDY
Принадлежит: HINDUSTAN PETROLEUM CORPORATION LTD.

A process for oligomerization of olefins includes contacting a feedstock with a zeolite catalyst under conditions of oligomerization at pressure between 8-20 bars and temperature in the range of 60-100° C. to obtain oligomers, wherein, the zeolite catalyst has a pentagonal sheet morphology. 1. A process for oligomerization of olefins , said process comprising contacting a feedstock with a zeolite catalyst under conditions of oligomerization at pressure between 8-20 bars and temperature in the range of 60-100° C. to obtain oligomers , wherein , the zeolite catalyst has a pentagonal sheet morphology.2. The process as claimed in claim 1 , wherein the feedstock comprises aliphatic hydrocarbons.3. The process as claimed in claim 2 , wherein the aliphatic hydrocarbons is a mixture of at least one alkane and at least one alkene.4. The process as claimed in claim 3 , wherein the aliphatic hydrocarbons is a mixture of C-Calkane and C-Calkene.5. The process as claimed in claim 3 , wherein the oligomer is formed due to dimerization and trimerization of at least one alkene.6. The process as claimed in claim 1 , wherein the zeolite catalyst is ZSM-57.7. The process as claimed in claim 6 , wherein the zeolite catalyst is loaded on alumina extrudates.8. The process as claimed in claim 7 , wherein ZSM-57 to alumina extrudates ratio in the range of 20:80-60:40.9. The process as claimed in claim 7 , wherein ZSM-57 to alumina extrudates ratio of 40:60.10. The process as claimed in claim 1 , wherein the contacting step is carried out at a weight hourly space velocity (WHSV) in the range of 1-4 h.11. The process as claimed in claim 5 , wherein the contacting step is carried out at an alkene space velocity in the range of 1-4 h.12. The process as claimed in claim 5 , wherein the alkene percentage conversion is in the range of 35-92% claim 5 , based on the alkene weight in the feedstock.13. The process as claimed in claim 5 , wherein the oligomerization selectivity for the dimerization ...

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Номер записи: 67
23-04-2020 дата публикации

EFFECT PIGMENTS

Номер: US20200123388A1
Автор: ANDES Stephanie, FRITSCHE Kirsten, JUNGNITZ Michael, Plueg Carsten, Schlueter Stefan, SCHOEN Sabine, Schoenefeld Ulrich
Принадлежит: Merck Patent GmBH

Effect pigments based on AlOflakes with high weather resistance and less photoactivity and to their use thereof in paints, industrial coatings, automotive coatings, printing inks, cosmetic formulations. The effect pigments have a ratio of the amount by weight of AlOof the AlOflake and the amount by weight of the metal oxide(s) of the coating layer(s) in the range of from 27:73 to 83:17 based on the total weight of the effect pigment. 1. An effect pigment based on an AlOflake which comprises an AlOflake coated with one or more layers of a metal oxide and/or a metal oxide mixture:{'sub': 2', '3', '2', '3, 'wherein the ratio of the amount by weight of AlOof the AlOflake to the amount by weight of the metal oxide(s) of the coating layer(s) is in the range of from 27:73 to 83:17 based on the total weight of the effect pigment;'}{'sub': 2', '2', '3', '3', '4', '2', '2', '2', '3, 'wherein one or more layers of a metal oxide and/or a metal oxide mixture comprise one or more layers of metal oxides selected of TiO, FeO, FeO, SnO, ZrOor CrO; and'}{'sub': 2', '3', '2, 'wherein the thickness of each metal oxide and/or a metal oxide mixture layer on the AlOflakes is 20-400 nm with the exception of any SnOlayer, which has a layer thickness of 1-400 nm.'}2. The effect pigment according to wherein the AlOflake is coated on the surface with one or two metal oxide layers.3. The effect pigment according to claim 1 , wherein the AlOflake is doped with TiO claim 1 , ZrO claim 1 , SiO claim 1 , SnO claim 1 , InOor ZnO or a combination thereof.4. The effect pigment according to claim 3 , wherein the amount of doping is 0.01-5% by weight based on the AlOflake.5. The effect pigment according to claim 1 , wherein the AlOflake is doped with TiOor ZnO.6. The effect pigment according to claim 1 , wherein the particle thickness of the AlOflake is in the range of 130-500 nm.7. The effect pigment according to claim 1 , wherein the AlOflake has a standard deviation of thickness distribution of less ...

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Номер записи: 68
21-05-2015 дата публикации

ADVANCED CATALYSTS FOR AUTOMOTIVE APPLICATIONS

Номер: US20150141236A1
Автор: Biberger Maximilian A., QI XIWANG, Yin Qinghua
Принадлежит:

Embodiments of present inventions are directed to an advanced catalyst. The advanced catalyst includes a honeycomb structure with an at least one nano-particle on the honeycomb structure. The advanced catalyst used in diesel engines is a two-way catalyst. The advanced catalyst used in gas engines is a three-way catalyst. In both the two-way catalyst and the three-way catalyst, the at least one nano-particle includes nano-active material and nano-support. The nano-support is typically alumina. In the two-way catalyst, the nano-active material is platinum. In the three-way catalyst, the nano-active material is platinum, palladium, rhodium, or an alloy. The alloy is of platinum, palladium, and rhodium. 121-. (canceled)22. A method of making a catalytic converter comprising:loading feed material into a plasma reactor, the feed material comprising active material and a support material;vaporizing the active material and the support material in the plasma reactor thereby forming a vapor cloud of active material and support material;condensing the vapor cloud of active material and support material, thereby forming solidified nanoparticles comprising nano-active material and nano-support material; andapplying a wash coat comprising the solidified nanoparticles comprising nano-active material and nano-support material to a substrate to produce a catalytic converter.23. (canceled)24. The method of claim 22 , wherein the nano-active material comprises platinum.25. The method of claim 22 , wherein the nano-active material comprises palladium.26. The method of claim 22 , wherein the nano-active material comprises rhodium.27. The method of claim 22 , wherein the nano-active material is an alloy.28. The method of claim 22 , wherein the nano-support comprises alumina.29. The method of claim 22 , wherein the nano-support comprises a partially reduced alumina surface claim 22 , the partially reduced alumina surface configured to limit movement of the nano-active material on a ...

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Номер записи: 69
18-05-2017 дата публикации

MESOPOROUS AND MACROPOROUS CATALYST WITH A CO-MIXED ACTIVE PHASE, THE PREPARATION PROCESS THEREOF AND THE USE THEREOF IN HYDROTREATING OF RESIDUES

Номер: US20170137725A1
Автор: BOUALLEG Malika, GUICHARD Bertrand
Принадлежит: IFP ENERGIES NOUVELLES

Mesoporous and macroporous hydroconversion catalyst: 1. Process for the preparation of a catalyst with a co-mixed active phase , comprising at least one metal of group VIB of the periodic table , optionally at least one metal of group VIII of the periodic table , optionally phosphorus and a predominantly calcined alumina oxide matrix , comprising the following steps:{'sub': 2', '3, 'a) a first step of precipitation, in an aqueous reaction medium, of at least one basic precursor selected from sodium aluminate, potassium aluminate, ammonia, sodium hydroxide and potassium hydroxide and of 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 is selected so as to obtain a pH of the reaction medium comprised between 8.5 and 10.5 and the flow rate of the acidic and basic precursor or precursors containing aluminium is adjusted so as to obtain a degree of conversion of the first step comprised between 5 and 13%, the degree of conversion being defined as the proportion of alumina formed in AlOequivalent during said first precipitation step relative to the total quantity of alumina formed at the end of step c) of the preparation process, said step taking place at a temperature comprised between 20 and 90° C. and for a duration comprised between 2 minutes and 30 minutes;'}b) a step of heating the suspension at a temperature comprised between 40 and 90° C. for a duration comprised between 7 minutes and 45 minutes,{'sub': 2', '3, 'c) a second step of precipitation of the suspension obtained at the end of the heating step b) by adding, to the suspension, 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 ...

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Номер записи: 70
08-09-2022 дата публикации

METHODS OF SYNTHESIZING CANNABIGERGOL, CANNABIGEROLIC ACID, AND ANALOGS THEREOF

Номер: US20220281790A1
Автор: BRUMAR Daniel, FARD Mahmood Azizpour, Geiling Ben, HAGHDOOST MANJILI Mohammadmehdi
Принадлежит: CANOPY GROWTH CORPORATION

Disclosed are methods for preparing cannabigerol (CBG) or a CBG analog, embodiments of the method comprising providing a compound (I); combining the compound (I) with geraniol and a solvent to form a reaction mixture; and combining the reaction mixture with an acid catalyst to form a product mixture comprising the CBG or the CBG homolog. The method may further comprise separating the CBG or the CBG analog from the product mixture and may further comprise purifying the CBG or CBG analog. Methods for preparing cannabigerolic acid (CBGA) or a cannabigerolic acid analog are also disclosed. The present disclosure also provides highly purity CBG, CBGA, and analogs thereof. 117-. (canceled)19. The method of claim 18 , wherein the solvent is chloroform claim 18 , heptane claim 18 , tert-butylmethyl ether claim 18 , diethyl ether claim 18 , dichloromethane claim 18 , dichloroethane claim 18 , trifluorotoluene claim 18 , hexane claim 18 , cyclohexane claim 18 , pentane claim 18 , toluene claim 18 , or any combination thereof.20. The method of claim 18 , wherein Ris C-Calkyl.21. The method of claim 18 , wherein Ris CH.22. The method of claim 18 , wherein Ris CH.23. The method of claim 18 , wherein Ris CH.24. The method of claim 18 , wherein the compound (I) and geraniol are present in a compound (I):geraniol molar ratio of between 10:1 and 1:10.25. The method of claim 18 , wherein the compound (I) and geraniol are present in a compound (I):geraniol molar ratio of between 10:1 and 1:1.26. The method of claim 18 , wherein the reacting step is performed with heating.28. The method of claim 27 , which comprises one or both of the chromatography step and the distillation step; and comprises the crystallization step.29. The method of claim 27 , wherein the solvent is chloroform claim 27 , heptane claim 27 , tert-butylmethyl ether claim 27 , diethyl ether claim 27 , dichloromethane claim 27 , dichloroethane claim 27 , trifluorotoluene claim 27 , hexane claim 27 , cyclohexane claim 27 ...

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Номер записи: 71
30-04-2020 дата публикации

METHOD FOR THE PRODUCTION OF ETHYLENEAMINES

Номер: US20200131111A1
Автор: BECKER Barbara, Heidemann Thomas, KOCH Eva, Luyken Hermann, Melder Johann-Peter
Принадлежит:

The present invention relates to a process for preparing alkanolamines and/or ethyleneamines in the liquid phase, by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst comprising Co, Ru and Sn. 1. A process for preparing alkanolamines and/or ethyleneamines in the liquid phase , by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst comprising Co , Ru and Sn.2. The process according to claim 1 , wherein the amination catalyst is obtained by reducing a catalyst precursor.3. The process according to claim 2 , wherein the catalyst precursor comprises 0.01% to 20% by weight of catalytically active components of Ru claim 2 , calculated as RuO; and 1% to 50% by weight of catalytically active components of Co claim 2 , calculated as CoO; and 0.1% to 5% by weight of catalytically active components of Sn claim 2 , calculated as SnO.4. The process according to claim 1 , wherein the catalyst precursor comprises one or more added catalyst elements selected from the group consisting of Cu claim 1 , Ni claim 1 , Zr and Al.5. The process according to claim 4 , wherein the catalyst precursor comprises(i) 0.2% to 5% by weight of catalytically active components of Sn, calculated as SnO,(ii) 1% to 35% by weight of catalytically active components of Co, calculated as CoO,{'sub': 2', '3', '2, '(iii) 10% to 80% by weight of catalytically active components of Al and/or Zr, calculated as AlOand ZrOrespectively;'}(iv) 1% to 35% by weight of catalytically active components of Cu and/or 1% to 35% by weight of catalytically active components of Ni, calculated as CuO and NiO respectively; and(v) 0.01% to 20% by weight of catalytically active components of Ru, calculated as RuO.6. The process according claim 1 , wherein the catalyst precursor comprises a support material.7. The process according to claim 6 , wherein the support material is aluminum oxide claim 6 , zirconium oxide or mixtures ...

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Номер записи: 72
15-09-2022 дата публикации

MOLYBDENUM-VANADIUM-BERYLLIUM-BASED OXIDATIVE DEHYDROGENATION CATALYST MATERIALS

Номер: US20220288564A1
Автор: Barnes Marie, Kim Yoonhee, Sebastiao Elena, Simanzhenkov Vasily, Sullivan David
Принадлежит:

This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum. 1. A catalyst material , comprising:molybdenum;vanadium;beryllium; andoxygen, a molar ratio of molybdenum to vanadium is from 1:0.25 to 1:0.65;', 'a molar ratio of molybdenum to beryllium is from 1:0.25 to 1:0.85; and', 'oxygen is present at least in an amount to satisfy the valency of any present metal oxides., 'wherein2. The catalyst material of claim 1 , wherein the molar ratio of molybdenum to vanadium is from 1:0.35 to 1:0.55.3. (canceled)4. The catalyst material of claim 1 , wherein the molar ratio of molybdenum to beryllium is from 1:0.35 to 1:0.75.5. (canceled)6. The catalyst material of claim 1 , wherein the catalyst material has a 35% conversion temperature of from about 300° C. to about 400° C.78.-. (canceled)9. The catalyst material of claim 1 , wherein the catalyst material has a selectivity to ethylene of from about 65% to 99%.1011.-. (canceled)12. The catalyst material of claim 1 , wherein the catalyst material has an amorphous phase of from 45 wt. % to 75 wt. %.13. (canceled)14. The catalyst material of claim 1 , wherein the catalyst material has an average crystallite size of greater than 50 nm.1516.-. (canceled)17. The catalyst material of claim 1 , wherein the catalyst material has a mean particle size from 0.5 μm to 10 μm.1819.-. (canceled)20. The catalyst material of claim 1 , wherein the catalyst material has at least one XRD diffraction peak (2θ degrees) selected from the group consisting of 6.5±0.2 claim 1 , 7.8±0.2 claim 1 , 8.9±0.2 claim 1 , 10.8±0.2 claim 1 , 13.2±0.2 claim 1 , 14.0±0.2 claim 1 , 22.1±0.2 claim 1 , 23.8±0.2 claim 1 , 25.2±0.2 claim 1 , 26.3±0.2 claim 1 , 26.6±0.2 claim 1 , 27.2±0.2 claim 1 , 27.6±0.2 claim 1 , 28.2±0.2 claim 1 , 29.2±0.2 claim 1 , 30.5±0.2 claim 1 , and 31.4±0.2 claim 1 , and wherein the XRD is obtained using CuKα radiation.21. A catalyst material claim 1 , ...

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Номер записи: 73
07-05-2020 дата публикации

METHOD FOR THE OXIDATION AND HYDROTHERMAL DISSOCIATION OF METAL CHLORIDES FOR THE SEPARATION OF METALS AND HYDROCHLORIC ACID

Номер: US20200141014A1
Автор: Harris Bryn, White Carl
Принадлежит:

A process is disclosed for the oxidation and thermal decomposition of metal chlorides, leading to an efficient and effective separation of nuisance elements such as iron and aluminum from value metals such as copper and nickel. In the first instance, oxidation, especially for iron, is effected in an electrolytic reactor, wherein ferrous iron is oxidised to ferric. In a second embodiment, the oxidised solution is treated in a hydrothermal decomposer reactor, wherein decomposable trivalent metal chlorides form oxides and divalent metal chlorides form basic chlorides. The latter are soluble in dilute hydrochloric acid, and may be selectively re-dissolved from the hydrothermal solids, thereby effecting a clean separation. Hydrochloric acid is recovered from the hydrothermal reactor. 1. A process for the oxidation of ferrous iron in chloride solutions and recovery of hydrochloric acid , comprising:i. feeding a solution containing ferrous chloride and hydrochloric acid into a reactor having an anode and a cathode;ii. applying a current to the anode and cathode to cause oxidation of the hydrochloric acid forming reactive monatomic chlorine, which immediately reacts with the ferrous iron oxidising it to ferric;iii. heating of the so-formed ferric chloride-containing solution to effect hydrothermal decomposition of the metal chlorides contained in the solution, evolving hydrochloric acid and forming a mixture of metal oxides and basic chlorides;iv. quenching of the so-formed decomposition slurry in dilute hydrochloric acid, wherein the basic metal chlorides re-dissolve; andv. proceeding with solid-liquid separation of the quench slurry for the recovery of metal oxides.2. The process of claim 1 , wherein in (i) claim 1 , a molar ratio of ferrous iron to hydrochloric acid is >1.3. The process of claim 2 , wherein an excess hydrochloric acid is used to maintain the pH <2.0 to prevent subsequent ferric iron hydrolysis.4. The process of claim 1 , wherein in (ii) claim 1 , a ...

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Номер записи: 74
21-08-2014 дата публикации

Copper-Zirconia Catalyst and Method of use and Manufacture

Номер: US20140235890A1
Автор: Madon Rostam Jai, NAGEL Peter, Thakur Deepak S.
Принадлежит: BASF CORPORATION

Catalysts and methods for their manufacture and use for the dehydrogenation of alcohols are disclosed. The catalysts and methods utilize a highly dispersible alumina, for example, boehmite or pseudoboehmite, to form catalysts that exhibit high dehydrogenation activities. Specifically, the catalysts include Cu that is highly dispersed by reaction of an alumina formed by peptizing of boehmite or pseudoboehmite and precursors of ZrO2, ZnO and CuO. 17-. (canceled)8. A dehydrogenation catalyst comprising about 10 to about 75 weight % CuO , about 5 to about 50 weight % ZnO , about 1 to about 30 weight % ZrO , and about 5 to about 40 weight % alumina prepared by peptizing dispersible alumina with a dispersibility of at least about 50% or greater and reacting the alumina with precursors of CuO , ZnO , and ZrO , wherein the nondispersible alumina is selected from γ-alumina , η-alumina , χ-alumina , other transitional aluminas , boehmite , pseudoboehmite , gibbsite , bayerite , and mixtures thereof.9. A process of preparing a dehydrogenation catalyst according to comprising:a) forming a slurry by peptizing a dispersible alumina in an acid at a pH between 2 and 5 and a temperature of about 20° C. to 30° C.10. The process of claim 9 , further comprising:b) forming a slurry of zirconyl nitrate and water at a pH of less than about 1.5 and a temperature in the range of about 20° C. to 30° C.,c) mixing the slurry of a) with the slurry of b) to provide a mixed slurry and maintaining the pH of the mixed slurry at less than about 1.5 and a temperature in the range of about of about 20° C. to 30° C.11. The process of claim 10 , further comprising:d) forming a solution of copper nitrate and zinc nitrate at a pH of less than about 1.5 and at a temperature in the range of about 30° C. to 50° C.,e) mixing the solution of d) with the mixed slurry of c) and maintaining the pH at less than about 1.5 and raising the temperature to a range of about 30° C. to 50° C. to create an acidic slurry ...

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Номер записи: 75
07-06-2018 дата публикации

METHOD OF PRODUCING HIGH-PURITY NANO ALUMINA

Номер: US20180155206A1
Автор: BAE Sang Cheol
Принадлежит:

A method of producing a high-purity nano alumina powder, in which general aluminum hydroxide is dissolved in a sodium hydroxide solution to give a sodium aluminate solution, most insoluble impurities other than sodium are removed using a micro filter to give a pure sodium aluminate solution. A seed is added thereto so as to precipitate nano aluminum hydroxide as a nano slurry under optimal precipitation conditions. The nano aluminum hydroxide slurry is filtered, dried, disintegrated, and then calcined at a low temperature of 900° C. or less, thus achieving the mass production of high-purity nano alumina having a particle size of 200 nm or less, whereby high-purity alumina nanoparticles can be produced in an environmentally friendly manner at low cost. 1. A method of producing high-purity nano alumina , comprising:preparing a sodium aluminate mother solution by dissolving and aging aluminum hydroxide;removing impurities from the mother solution by filtering the mother solution through a filter membrane;precipitating a nano slurry by adding an aluminum hydroxide seed to the mother solution having no impurities;performing classification by separating a grown particle slurry and a non-grown particle slurry, filtering the grown particle slurry to give a solid and a filtrate and using the non-grown particle slurry as the seed, and washing and drying the solid and using the filtrate as a solvent for dissolving the aluminum hydroxide;preparing calcined alumina by calcining the washed and dried solid; andobtaining high-purity nano alumina by dispersing the calcined alumina in ultrapure water in order to remove a trace amount of impurities from the calcined alumina and to disperse particles and then performing filtration and drying.2. The method of claim 1 , wherein the preparing the mother solution comprises:dissolving aluminum hydroxide in a sodium hydroxide (NaOH) solution to give a sodium aluminate mother solution, andaging the sodium aluminate mother solution so as to ...

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Номер записи: 76
14-05-2020 дата публикации

CHROMIUM-ON-ALUMINA DEHYDROGENATION CATALYSTS AND METHODS FOR PREPARING AND USING THEM

Номер: US20200147588A1
Автор: FRIDMAN Vladimir Z., MONROE Adam
Принадлежит:

The present disclosure relates to chromium-on-alumina dehydrogenation catalyst materials, to methods for making such catalysts, and to methods for dehydrogenating hydrocarbons using such catalysts. In one aspect, the disclosure provides a method for preparing a dehydrogenation catalyst material, the method comprising impregnating a chromium-on-alumina material with ascorbic acid, one or more of sodium, lithium and potassium (e.g., sodium), and chromium; and calcining the impregnated material to provide the dehydrogenation catalyst material comprising chromium in the range of 2.5 wt. % to about 35 wt. % and having no more than 100 ppm chromium(VI). 1. A method for preparing a dehydrogenation catalyst material , the method comprisingproviding a porous chromium-on-alumina material;impregnating the chromium-on-alumina material with ascorbic acid, one or more of sodium, lithium and potassium (e.g., sodium), and chromium; andcalcining the impregnated material to provide the dehydrogenation catalyst material having chromium in the range of 2.5-35 wt. % and having no more than 100 ppm chromium(VI).2. A method according to claim 1 , wherein the chromium-on-alumina catalyst material before the impregnating step comprises at least about 50 wt. % alumina claim 1 , e.g. claim 1 , at least about 75 wt. % claim 1 , at least about 90 wt. % claim 1 , or at least about 95 wt. % alumina claim 1 , calculated as AlO.3. A method according to claim 1 , wherein chromium is present in the chromium-on-alumina catalyst material before the impregnating step in an amount within the range of about 2.5 wt. % to about 35 wt. % claim 1 , calculated as CrO.4. A method according to claim 1 , wherein the chromium-on-alumina catalyst material before the ascorbic acid impregnating step comprises at least about 100 ppm chromium(VI) on an elemental mass basis claim 1 , e.g. claim 1 , at least about 500 ppm claim 1 , at least about 1 claim 1 ,000 ppm claim 1 , or at least about 5 claim 1 ,000 ppm chromium( ...

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Номер записи: 77
23-05-2019 дата публикации

ALUMINA AND METHOD FOR PRODUCING AUTOMOTIVE CATALYST USING SAME

Номер: US20190152795A1
Автор: KAWAKAMI Yoshitaka, Sogabe Kohei, Umeda Tetsu
Принадлежит: Sumitomo Chemical Company, Limited

An alumina having a multimodal particle size distribution wherein at least one of the particle sizes giving local maximum values in the particle size distribution is less than 10 μm, and wherein the alumina comprises 1 to 5 wt % of at least one of La and Ba. 1. An alumina having a multimodal particle size distribution wherein at least one of the particle sizes giving local maximum values in the particle size distribution is less than 10 μm , and wherein the alumina comprises 1 to 5 wt % of at least one of La and Ba.2. The alumina according to claim 1 , having a BET specific surface area of 90 to 500 m/g.3. The alumina according to claim 1 , having a pore volume of 0.4 to 1.8 ml/g by Nadsorption measurement.4. The alumina according to claim 1 , having an untamped bulk density of 0.1 to 1.1 g/ml.5. The alumina according to claim 1 , having a content of Fe claim 1 , Si and Na in total of 10 ppm or less.6. The alumina according to claim 1 , comprising La and Ba claim 1 , and satisfying the following expression (1):{'br': None, '0.0001≤[La]/[Ba]≤10000 \u2003\u2003(1)'}wherein [La] represents a content of La (wt %), and [Ba] represents a content of Ba (wt %).7. A method for producing an automotive catalyst comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a step of producing a slurry containing at least the alumina according to , a binder, a dispersion medium, and a noble metal;'}a step of coating a substrate with the slurry; anda step of heat-treating the substrate coated with the slurry to sinter the alumina. The present disclosure relates to alumina and a method for producing an automotive catalyst prepared by using the same.Alumina, which is excellent in heat resistance, insulation, abrasion resistance, corrosion resistance, etc., is widely used in various applications. Examples of specific applications of alumina include exhaust gas treatment from internal combustion engines of automobiles and motorcycles, and exhaust gas treatment at a high temperature ...

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Номер записи: 78
14-06-2018 дата публикации

METHOD OF MANUFACTURING HIGH-DENSITY BEADS OF HIGH-PURITY ALUMINA

Номер: US20180162739A1
Автор: BAE Hyeon Cheol
Принадлежит:

A method of manufacturing high-density beads of high-purity alumina, in which general aluminum hydroxide is dissolved in a sodium hydroxide solution. Insoluble impurities are removed to thus manufacture a pure sodium aluminate solution. High-purity aluminum hydroxide is manufactured. The manufactured high-purity aluminum hydroxide is subjected to a hydrothermal reaction, thus removing both crystal water and sodium. Sulfuric acid and ammonia are not used, raw material powder uncontaminated with impurities is manufactured by performing atomization using pulverizing media, and the powder as a raw material and ultrapure water are used to manufacture seeds. While the atomized powder and the ultrapure water are put onto a rotating plate, steps are performed until a desired size is obtained, thus manufacturing highly densified beads. A sintering process is performed in order to maintain a molding shape and to increase a density, followed by a classification process. 1. A method of manufacturing high-density beads of high-purity alumina , the method comprising:a mother-solution preparation step of putting general aluminum hydroxide and a sodium hydroxide solution into a dissolver and performing heating to thus form a supersaturated liquid;{'sub': 2', '3', '2, 'a purification step that includes a first filtration process for filtering a mother solution using a filter cloth to thus remove insoluble impurities and transferring the purified mother solution to a precipitator, a precipitation process for adding high-purity aluminum hydroxide seeds to the mother solution of the precipitator, thus precipitating high-purity aluminum hydroxide, a second filtration process for separating the precipitated high-purity aluminum hydroxide and the sodium hydroxide solution, which includes a part of the aluminum hydroxide dissolved therein, transferring a filtrate back to the process and washing a solid matter, a hydrothermal process for mixing the washed high-purity aluminum hydroxide with ...

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Номер записи: 79
25-06-2015 дата публикации

Method for producing alumina

Номер: US20150175435A1
Автор: Aleksandr Sergeevich SENYUTA, Andrey Vladimirovich PANOV
Принадлежит: Rusal Engineering and Technological Center LLC

The invention relates to metallurgy, in particular to acidic methods for producing alumina, and can be used in processing low-grade aluminum-containing raw material. The method for producing alumina comprises roasting an aluminum-containing raw material, treating said material with hydrochloric acid, salting out aluminum chloride by saturating the clarified chloride solution with gaseous hydrogen chloride, calcining aluminum chloride to produce aluminum oxide, and pyrohydrolyzing the mother liquor, with the return of hydrogen chloride to the acid treatment and salting out stages. To improve the quality of the alumina and to reduce energy consumption, the aluminum chloride, precipitated during the salting-out process, is treated with aqueous ammonia, the resulting precipitate is sent to calcination, and the ammonium chloride solution is mixed with said aluminum-containing raw material before or during the roasting thereof, ammonia released during the roasting is dissolved in water, and the resulting aqueous ammonia is sent to the treatment of aluminum chloride. The ammonium chloride solution, prior to mixing with the aluminum-containing raw material, may be subjected to stepwise evaporation with the repeated use of heating steam. The ammonium chloride released during the evaporation can be mixed with the aluminum-containing raw material.

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Номер записи: 80
01-07-2021 дата публикации

High Activity Reforming Catalyst Formulation and Process for Low Temperature Steam Reforming of Hydrocarbons to Produce Hydrogen

Номер: US20210197178A1
Автор: Ahmed Shakeel, Albuali Mohammed, Draze Mohammed, Harale Aadesh, Katikaneni Sai P., LEE Kunho
Принадлежит:

A method for producing a hydrogen rich gas from a heavy hydrocarbon feed comprising the steps of introducing the hydrocarbon feed to a reactor, the reactor comprising a low temperature reforming catalyst, the low temperature reforming catalyst comprising an amount of praesodymium, 12 wt % nickel, and an aluminum oxide component, contacting the low temperature reforming catalyst with the hydrocarbon feed in the reactor, wherein the reactor operates at a temperature between 500° C. and 600° C., wherein the reactor operates at a pressure between 3 bar and 40 bar, and producing the hydrogen rich gas over the low temperature reforming catalyst, wherein the hydrogen rich gas comprises hydrogen. 1. A method for producing a hydrogen rich gas from a hydrocarbon feed , the method comprising the steps of: an amount of praesodymium,', '12 wt % nickel, and', 'an aluminum oxide component;, 'introducing the hydrocarbon feed to a reactor, the reactor comprising a low temperature reforming catalyst, the low temperature reforming catalyst comprisingintroducing a steam feed to the reactor, wherein the steam feed comprises steam, wherein a ratio of steam to carbon is in the range between 2.8 and 4.2;contacting the low temperature reforming catalyst with the hydrocarbon feed in the reactor, wherein the reactor operates at a temperature between 500° C. and 600° C., wherein the reactor operates at a pressure between 3 bar and 40 bar; andproducing the hydrogen rich gas over the low temperature reforming catalyst, wherein the hydrogen rich gas comprises hydrogen.2. The method of claim 1 , wherein the amount of praseodymium is present in an amount between 1 wt % and 9 wt %.3. The method of claim 1 , wherein the amount of praseodymium is 3 wt %.4. The method of claim 1 , wherein the hydrocarbon feed comprises methane.5. The method of claim 1 , wherein the hydrogen rich gas comprises an additional gas selected from the group consisting of carbon dioxide claim 1 , carbon monoxide claim 1 , ...

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Номер записи: 81
11-09-2014 дата публикации

Method of making highly porous, stable aluminum oxides doped with silicon

Номер: US20140256543A1
Автор: Baiyu Huang, Brian F. Woodfield, Calvin H. Bartholomew, Maryam Khosravi-Mardkhe
Принадлежит: BRIGHAM YOUNG UNIVERSITY

The present invention relates to a method for making high surface area and large pore volume thermally stable silica-doped alumina (aluminum oxide) catalyst support and ceramic materials. The ability of the silica-alumina to withstand high temperatures in presence or absence of water and prevent sintering allows it to maintain good activity over a long period of time in catalytic reactions. The method of preparing such materials includes adding organic silicon reagents to an organic aluminum salt such as an alkoxide in a controlled quantity as a doping agent in a solid state, solvent deficient reaction followed by calcination. Alternatively, the organic silicon compound may be added after calcination of the alumina, followed by another calcination step. This method is inexpensive and simple. The alumina catalyst support material prepared by the subject method maintains high pore volumes, pore diameters and surface areas at very high temperatures and in the presence of steam.

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Номер записи: 82
21-06-2018 дата публикации

Side stream removal of impurities in electrolysis systems

Номер: US20180171496A1
Автор: Amit Shah
Принадлежит: Chemetics Inc

A side stream subsystem can be used to remove impurity species from the recirculating alkali metal chloride solution in certain electrolysis systems. Silicon and/or aluminum species can be removed via precipitation after introducing an alkali metal hydroxide and magnesium chloride in a side stream line in the subsystem. The invention can allow for a substantial reduction in raw material and capital costs.

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Номер записи: 83
06-06-2019 дата публикации

Effect pigments

Номер: US20190169439A1
Автор: CARSTEN Plueg, Kirsten Fritsche, Michael Jungnitz, Sabine Schoen, Stefan Schlueter, Stephanie Andes, Ulrich Schoenefeld
Принадлежит: Merck Patent GmBH

Effect pigments based on Al 2 O 3 flakes with high weather resistance and less photoactivity and to their use thereof in paints, industrial coatings, automotive coatings, printing inks, cosmetic formulations. The effect pigments have a ratio of the amount by weight of Al 2 O 3 of the Al 2 O 3 flake and the amount by weight of the metal oxide(s) of the coating layer(s) in the range of from 27:73 to 83:17 based on the total weight of the effect pigment.

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Номер записи: 84
18-09-2014 дата публикации

ALUMINA-ZIRCONIA CERAMIC IMPLANTS AND RELATED MATERIALS, APPARATUS, AND METHODS

Номер: US20140265064A1
Автор: Bock Ryan, Lakshminarayanan Ramaswamy, McEntire Bryan J.
Принадлежит: Amedica Corporation

Embodiments of apparatus, systems, and methods relating to biomedical implants and other devices made up of unique and improved alumina-zirconia ceramic materials. In an example of a method according to an implementation of the invention, a slurry is prepared, compressed, and fired to obtain a fired ceramic piece comprising at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide. Some embodiments and implementations may comprise selected concentrations of one or more such compounds to yield certain preferred results. 1. A method for manufacturing a ceramic biomedical implant , the method comprising the steps of:preparing a first feedstock by mixing ingredients comprising at least aluminum oxide and strontium carbonate or ingredients selected to yield aluminum oxide and strontium carbonate;preparing a second feedstock by mixing ingredients comprising at least aluminum oxide and calcium carbonate or ingredients selected to yield aluminum oxide and calcium carbonate;preparing a slurry comprising materials from the first feedstock, materials from the second feedstock, and further comprising additional ingredients configured to yield at least a portion of a ceramic biomedical implant comprising at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide;forming a compact derived from the slurry;firing the compact to obtain a fired piece;after the step of firing the slurry, compressing the fired piece; andreoxidizing the fired piece, wherein, following the step of reoxidizing the fired piece, the fired piece comprises at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide.2. The method of claim 1 , wherein the fired piece comprises aluminum oxide in a concentration of at least about 74% by weight.3. The method of claim ...

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Номер записи: 85
21-06-2018 дата публикации

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF PRODUCING NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Номер: US20180175377A1
Автор: Hirose Takakazu, KAMO Hiromichi
Принадлежит: SHIN-ETSU CHEMICAL CO., LTD.

A negative electrode active material for a non-aqueous electrolyte secondary battery, includes: negative electrode active material particles that contain a silicon compound (SiO: 0.5≤x≤1.6) containing a Li compound, wherein the silicon compound is at least partially coated with a carbon coating, and at least a part of a surface of the silicon compound, a surface of the carbon coating, or both of them are coated with a composite layer that contains a composite composed of amorphous metal oxide and metal hydroxide. This provides a negative electrode active material for a non-aqueous electrolyte secondary battery that is highly stable in aqueous slurry, having a high capacity, favorable cycle performance and first efficiency. 113-. (canceled)14. A negative electrode active material for a non-aqueous electrolyte secondary battery , comprising:{'sub': 'x', 'negative electrode active material particles that contain a silicon compound (SiO: 0.5≤x≤1.6) containing a Li compound,'}wherein the silicon compound is at least partially coated with a carbon coating, andat least a part of a surface of the silicon compound, a surface of the carbon coating, or both of them is coated with a composite layer that contains a composite composed of amorphous metal oxide and metal hydroxide.15. The negative electrode active material for a non-aqueous electrolyte secondary battery according to claim 14 , wherein the metal oxide and the metal hydroxide contain at least one element selected from the group consisting of aluminum claim 14 , magnesium claim 14 , titanium claim 14 , and zirconium.16. The negative electrode active material for a non-aqueous electrolyte secondary battery according to claim 14 , wherein the composite layer has a thickness of 10 nm or less.17. The negative electrode active material for a non-aqueous electrolyte secondary battery according to claim 15 , wherein the composite layer has a thickness of 10 nm or less.18. The negative electrode active material for a non- ...

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Номер записи: 86
11-06-2020 дата публикации

A Bioactive Micro-nano Pore Gradient Oxide Ceramic Film

Номер: US20200179564A1
Автор: Li Tingkai, Shen Zhijian, Tao Li, Zhang Jie, Zhao Wuyuan
Принадлежит:

The invention discloses micron-nano pore gradient oxide ceramic films with biological activity, which are prepared by the following methods: The surface structures are biomedical engineering materials; Inorganic precursor coating solutions or the organic precursor coating solutions are prepared with or without micron and nanopore additives; The surface structures of the substrate are treated in the following steps: (1) The surfaces of the substrate are coated by the inorganic precursor coating solutions or the organic precursor coating solutions with or without micron and nanopore additives; (2) The substrate with coatings are dried, sintered, naturally cooled, and cleaned. (3) The biomedical engineering materials with the micron-nanopore gradient oxide ceramic films, especially biomimetic micro-nanoporous gradient alumina film, yttrium partially stabilized zirconia film, and alumina doped yttrium partially stabilized zirconia films in this invention greatly improve biocompatibility and biological activity. 120-. (canceled)21. A method for forming a biomimetic micro-nano porous gradient oxide ceramic film , the method comprising:providing a biomedical surface structure;coating the surface structure with an inorganic precursor coating solution selected from the group consisting of nanometer alumina suspension slurry, yttrium partially stabilized zirconia suspension slurry, or alumina-doped yttrium partially stabilized zirconia suspension slurry;drying and sintering the coated surface structure;cooling the coated surface structure; and,forming a film selected from the group consisting of a single film having a nanopore outer layer or a double film having a micropore inner layer and a nanopore outer layer.22. The method of wherein coating the surface structure with nanometer alumina suspension slurry includes coating using a method selected from the group consisting of liquid phase coprecipitation or hydrothermal-hydrolysis.23. The method of wherein coating the surface ...

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Номер записи: 87
11-06-2020 дата публикации

SYSTEM AND METHOD FOR DESULFURIZATION AND DENITRIFICATION INTEGRATED TREATMENT AND RECYCLING OF FLUE GAS BY USING RED MUD

Номер: US20200179872A1
Автор: JIA Lijuan, Li Bin, Li Bo, LI Shaoming, Ning Ping, YIN Liangtao, YIN Zaifei, ZHANG Qiulin
Принадлежит:

The present invention relates to a system and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud, and belongs to the recycling and environmental protection technology field. The system includes a desulfurization spray tower, an ozone generator, a denitration spray tower, a slurry mixing tank, a slurry storage tank, a vacuum filter, an ammonia water neutralization tank, an aluminum hydroxide precipitation tank, an ammonia water tank, an aluminum hydroxide storage tank, a filter press, an ammonia distillation tower, a dephlegmator, a cooler, a concentrated ammonia water storage tank, a gypsum precipitation tank, and an anaerobic biochemical pool. In the present invention, red mud slurry is used for desulfurization and denitrification treatment of flue gas to remove SOand NO in the flue gas, so that SOand NO in the flue gas reach an emission standard. 1. A system for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud , comprising a desulfurization spray tower , an ozone generator , a denitration spray tower , a slurry mixing tank , a slurry storage tank , a vacuum filter , an ammonia water neutralization tank , an aluminum hydroxide precipitation tank , an ammonia water tank , an aluminum hydroxide storage tank , a filter press , an ammonia distillation tower , a dephlegmator , a cooler , a concentrated ammonia water storage tank , a gypsum precipitation tank , and an anaerobic biochemical pool , whereinan air blower is arranged at a flue gas inlet end at the bottom of the desulfurization spray tower; a liquid outlet end at the bottom of the desulfurization spray tower is communicated with a spray nozzle communication pipeline at the top of the desulfurization spray tower through a circulation pipeline I; a circulating pump I is arranged on the circulation pipeline I; a flue gas outlet end at a top end of the desulfurization spray tower is communicated with a ...

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Номер записи: 88
22-07-2021 дата публикации

Method for Extracting Lithium from Salt Lake Brine and Simultaneously Preparing Aluminum Hydroxide

Номер: US20210221697A1
Автор: XU Xiang, XUE Duan
Принадлежит: Beijing University of Chemical Technology

The present disclosure relates to a method for extracting lithium from salt lake brine and simultaneously preparing aluminum hydroxide. This method includes: a. adding an aluminum salt to the brine to obtain a mixed salt solution A, adding an alkali solution to the mixed salt solution A for co-precipitation reaction, then subjecting to crystallization reaction and solid-liquid separation at the end of the reaction to obtain magnesium-aluminum hydrotalcite solid product and lithium-containing brine, wherein in step a, the alkali solution is an alkali solution free of carbonate ion; b. evaporating and concentrating the lithium-containing brine to obtain a lithium-rich brine, adding an aluminum salt to the lithium-rich brine to obtain a mixed salt solution B, adding an alkali solution dropwise to the mixed salt solution B to perform a co-precipitation reaction and solid-liquid separation after the end of the reaction to obtain a lithium-containing liquid and a lithium-containing layered material filter cake, wherein in step b, the alkali solution is an alkali solution free of carbonate ion; c. dispersing the lithium-containing layered material filter cake in deionized water to form a suspension slurry, then adjusting the pH value of the suspension slurry so as to carry out a lithium deintercalation reaction; d. filtering the slurry obtained after the lithium deintercalation reaction to obtain a lithium-containing solution and aluminum hydroxide filter cake; e. washing the aluminum hydroxide filter cake with deionized water and drying to obtain aluminum hydroxide solid.

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Номер записи: 89
30-07-2015 дата публикации

CATION EXCHANGE MEMBRANCE AND METHOD FOR PRODUCING SAME

Номер: US20150209732A1
Автор: Higa Mitsuru, Jikihara Atsushi, NAKASHIMA Takahiro, Wakui Takashi
Принадлежит:

Provided is a cation exchange membrane having a stable ion exchange performance during usage, being excellent in basic properties such as membrane resistance and ion transportation as well as strength, and useful for electrodialysis and a method for producing the same. The cation exchange membrane is composed of a polyvinyl alcohol copolymer including an anionic group-containing anionic polymer segment and a vinyl alcohol polymer segment, and having a microphase separation structure having a domain size (X) in a range from 0 nm Подробнее

Номер записи: 90
29-07-2021 дата публикации

CATALYST CARRIER FOR DRY REFORMING PROCESSES

Номер: US20210229991A1
Автор: ALSOLAMI Bandar H., BAMAGAIN Rami, FADHEL Bandar A.
Принадлежит: Saudi Arabian Oil Company

Methods for dry reforming with a red mud catalyst support composition, one method including providing a methane feed and carbon dioxide feed to react over the red mud catalyst support composition at increased temperature and increased pressure to produce synthesis gas comprising Hand CO, the composition comprising red mud material produced from an alumina extraction process from bauxite ore. 1. A method for dry reforming with a red mud catalyst support composition , the method comprising the steps of:{'sub': '2', 'providing a methane feed and carbon dioxide feed to react in a dry reforming reaction over the red mud catalyst support composition at a temperature between about 500° C. to about 1000° C. and a pressure between about 5 bar and about 20 bar to produce synthesis gas comprising Hand CO, the red mud catalyst support composition comprisingcaustic red mud waste material produced from an alumina extraction process from bauxite ore, where the methane conversion rate via dry reforming is at least about 4% for at least about 6 hours.2. The method according to claim 1 , where the red mud catalyst support composition further comprises at least one added catalytic metal claim 1 , the added catalytic metal not being present at greater than about 1 wt. % in the caustic red mud waste material produced from the alumina extraction process from bauxite ore.3. The method according to claim 2 , where the at least one added catalytic metal is a Periodic Table Group 3-12 metal.4. (canceled)5. The method according to claim 1 , where the increased temperature is between about 600° C. to about 800° C.6. The method according to claim 1 , where the increased temperature is between about 700° C. to about 750° C.7. (canceled)8. The method according to claim 1 , where the increased pressure is between about 7 bar and about 15 bar.9. The method according to claim 1 , where the increased pressure is about 14 bar.10. The method according to claim 1 , where the methane conversion rate is ...

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Номер записи: 91
19-07-2018 дата публикации

Ion Exchange Membranes

Номер: US20180201746A1
Автор: Hessing Jacko, IKEDA Morihito
Принадлежит:

A composite ion exchange membrane obtainable by a process comprising reacting an ionically-charged membrane with a composition comprising: (a) a monofunctional ethylenically unsaturated monomer having an ionic charge opposite to the charge of the ionically-charged membrane; and (b) a crosslinking agent comprising two or more ethylenically unsaturated groups; wherein the molar ratio of (b):(a) is lower than 0.04 or is zero. 1. A composite ion exchange membrane obtainable by a process comprising reacting an ionically-charged membrane with a composition comprising:(a) a monofunctional ethylenically unsaturated monomer having an ionic charge opposite to the charge of the ionically-charged membrane; and(b) a crosslinking agent comprising two or more ethylenically unsaturated groups;wherein the molar ratio of (b):(a) is lower than 0.04 or is zero.2. The composite membrane according to wherein the molar ratio of (b):(a) is zero.3. The composite membrane according to wherein the ionically-charged membrane has been obtained by a process comprising the polymerisation of a composition comprising a crosslinking agent and a monofunctional ethylenically unsaturated monomer having an ionic charge.4. The composite membrane according to wherein the composition further comprises (d) a radical initiator.5. The composite membrane according to wherein component (a) has an anionic charge and partially or wholly forms a salt with a polyvalent counter ion.6. The composite membrane according to wherein the polyvalent counter ion comprises a diamine and/or a triamine.7. The composite membrane according to wherein the molar ratio of the counter ion to component (a) is from 0.1 to 0.6.8. The composite membrane according to wherein the composition further comprises an inert solvent and the weight ratio of the total amount of components (a) and (b) to the inert solvent (c) is at least 0.20.9. The composite membrane according to wherein the composition further comprises an inert solvent (c) and ...

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Номер записи: 92
27-07-2017 дата публикации

Method for Catalytic Deoxygenation of Natural Oils and Greases

Номер: US20170210996A1
Автор: Krishnamoorthy Sundaram, Schmidt Stephen Raymond
Принадлежит: W. R. GRACE & CO.-CONN.

A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof containing triglycerides or free fatty acids includes the steps of: providing a catalyst comprising a support predominantly comprised of alumina with metal compounds provided on the support based on Mo and at least one selected from the group consisting of Ni and Co, and at least one selected from the group consisting of Cu and Cr, and contacting the renewable oils with the catalyst under conditions sufficient to deoxygenate the renewable oils. 1. A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof comprising triglycerides or free fatty acids , comprising the steps of: a support predominantly comprised of alumina,', 'metal compounds provided on the support, the metal compounds based on Mo and at least one selected from the group consisting of Ni and Co, and', 'at least one promoter selected from the group consisting of Cu and Cr; and', 'contacting the renewable oils with the catalyst under conditions sufficient to promote deoxygenation of the renewable oils., 'providing a catalyst comprising2. The method of claim 1 , wherein the promoter metal is Cu.3. The method of claim 1 , wherein the promoter metal is Cr.4. The method of claim 1 , wherein the promoter metal is present in the catalyst formulation in an amount calculated as an oxide between about 1.4 wt % and about 3.0 wt %.5. The method of claim 1 , wherein the promoter metal is introduced prior to the extrusion stage of the catalyst manufacturing process.6. The method of claim 1 , wherein the support comprises at least one additional oxide from the group comprising silica claim 1 , titanic and zirconia.7. The method of claim 1 , wherein the support comprises silica.8. The method of claim 1 , wherein the catalyst comprises phosphorus.9. The method of claim 1 , wherein the renewable oils in the feedstock comprise triglycerides.10. The method of claim 1 , wherein ...

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Номер записи: 93
26-07-2018 дата публикации

Precipitated Alumina and Method of Preparation

Номер: US20180208478A1
Автор: RABAIOLI Maria Roberta
Принадлежит:

A process for producing alumina, the process having a seeding phase and a precipitation phase. During the seeding phase a seed mixture is produced by adding an aluminium salt to an aqueous solution and then adding an alkaline metal aluminate to the mixture while maintaining the seed mixture at generally neutral pH. The precipitation phase produces precipitated alumina by simultaneously adding aluminium salt and alkaline metal aluminate to the seed mixture while maintaining a pH from 6.9 to 7.8. The recovered precipitated alumina has at least one, preferably all the following characteristics: i) a crystallite size of 33-42 Ang.: in the (120) diagonal plane (using XRD).; ii) a crystallite d-spacing (020) of between 6.30-6.59 Ang.; iii) a high porosity with an average pore diameter of 115-166 Ang.; iv) a relatively low bulk density of 250-350 kg/m; v) a surface area after calcination for 24 hours at 1100° C. of 60-80 m/g; and vi) a pore volume after calcination for one hour at 1000° C. 0.8-1.1 m/g. 1. A process for producing alumina , comprising the following steps:i) preparing an alumina mixture by adding an aluminum salt to an aqueous solution; the alumina mixture having a pH of 3 to 4;ii) adding an alkaline metal aluminate to the alumina mixture to form a seed mixture, wherein the addition of the alkaline metal aluminate occurs at a rate to maintain the pH of the seed mixture from 6.0 to 7.5;iii) aging the seed mixture;iv) adding to the seed mixture additional aluminum salt and additional alkaline metal aluminate, said addition being at a rate to produce a precipitated mixture comprising a precipitated alumina and to maintain the pH of the precipitated mixture from 6.9 to 7.8,;v) heating the precipitated mixture comprising the precipitated alumina whilst increasing the pH from a pH of 8.8 to a pH of 9.3; andvi) recovering the precipitated alumina.2. The process of wherein the aluminum salt added in step i) and step iv) of the process comprises aluminum sulfate claim ...

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Номер записи: 94
05-08-2021 дата публикации

COPPER/CERAMIC BONDED BODY, INSULATING CIRCUIT SUBSTRATE, COPPER/CERAMIC BONDED BODY PRODUCTION METHOD, AND INSULATING CIRCUIT SUBSTRATE PRODUCTION METHOD

Номер: US20210238102A1
Автор: Terasaki Nobuyuki
Принадлежит: MITSUBISHI MATERIALS CORPORATION

A copper/ceramic bonded body includes: a copper member made of copper or a copper alloy; and a ceramic member made of an aluminum oxide, wherein the copper member and the ceramic member are bonded to each other, a magnesium oxide layer is provided on a ceramic member side of an interface between the copper member and the ceramic member; and a Mg solid solution layer is provided between the magnesium oxide layer and the copper member and contains Mg in a state of a solid solution in a Cu primary phase. 1. A copper/ceramic bonded body , comprising:a copper member made of copper or a copper alloy; anda ceramic member made of an aluminum oxide,wherein, the copper member and the ceramic member are bonded to each other,a magnesium oxide layer is provided on a ceramic member side of an interface between the copper member and the ceramic member, anda Mg solid solution layer is provided between the magnesium oxide layer and the copper member and contains Mg in a state of a solid solution in a Cu primary phase.2. The copper/ceramic bonded body according to claim 1 ,wherein, in a region from a bonding surface of the ceramic member to 50 μm toward a copper member side, an area ratio of an intermetallic compound phase is 15% or less.3. An insulating circuit substrate claim 1 , comprising:a copper sheet made of copper or a copper alloy; anda ceramic substrate made of an aluminum oxide,wherein, the copper sheet is bonded to a surface of the ceramic substrate,a magnesium oxide layer is provided on a ceramic substrate side of an interface between the copper sheet and the ceramic substrate, anda Mg solid solution layer is provided between the magnesium oxide layer and the copper sheet and contains Mg in a state of a solid solution in a Cu primary phase.4. The insulating circuit substrate according to claim 3 ,wherein, in a region from a bonding surface of the ceramic substrate to 50 μm toward a copper sheet side, an area ratio of an intermetallic compound phase is 15% or less.5. A ...

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Номер записи: 95
10-08-2017 дата публикации

OIL-FREE CRYSTAL GROWTH MODIFIERS FOR ALUMINA RECOVERY

Номер: US20170225962A1
Автор: Anderson Marie E., ANDRUSZKIEWICZ Krzysztof, CHEN Haunn-Lin Tony, FARINATO Raymond Salvatore, GRIFFIN Scott
Принадлежит:

Disclosed herein is a method of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising an alkyl or alkenyl succinic anhydride is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the aqueous emulsion of an alkyl or alkenyl succinic anhydride. 1. A method of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream , the method comprising:adding an aqueous emulsion comprising an alkyl or alkenyl succinic anhydride to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils and fuel oils; andcrystallizing the alumina trihydrate crystals from the alumina trihydrate recovery process stream,thereby providing a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the aqueous emulsion of an alkyl or alkenyl succinic anhydride.2. The method according to wherein the aqueous emulsion is substantially free of surfactants.3. The method according to wherein the aqueous emulsion is substantially free of polyalkoxylated non-ionic surfactants claim 1 , fatty acids claim 1 , fatty acid salts or combinations thereof.4. The method according to wherein the aqueous emulsion has a volume average particle diameter of about 1 to about 100 micrometers.5. The method according to wherein the aqueous emulsion has a volume average particle diameter of about 1 to about 50 micrometers.7. The method according to wherein the alkyl or alkenyl succinic anhydride is a C-Calkenyl succinic ...

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Номер записи: 96
18-08-2016 дата публикации

Method of making highly porous, stable aluminum oxides doped with silicon

Номер: US20160236176A1
Автор: Baiyu Huang, Brian F. Woodfield, Calvin H. Bartholomew, Maryam Khosravi-Mardkhe
Принадлежит: BRIGHAM YOUNG UNIVERSITY

The present invention relates to a method for making high surface area and large pore volume thermally stable silica-doped alumina (aluminum oxide) catalyst support and ceramic materials. The ability of the silica-alumina to withstand high temperatures in presence or absence of water and prevent sintering allows it to maintain good activity over a long period of time in catalytic reactions. The method of preparing such materials includes adding organic silicon reagents to an organic aluminum salt such as an alkoxide in a controlled quantity as a doping agent in a solid state, solvent deficient reaction followed by calcination. Alternatively, the organic silicon compound may be added after calcination of the alumina, followed by another calcination step. This method is inexpensive and simple. The alumina catalyst support material prepared by the subject method maintains high pore volumes, pore diameters and surface areas at very high temperatures and in the presence of steam.

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Номер записи: 97
18-08-2016 дата публикации

CATALYST FOR THE PRODUCTION OF SYNTHESIS GAS AND PROCESS FOR OBTAINING IT

Номер: US20160236183A1
Автор: FONSECA BIDART Antonio Marcos, MENEZES PASSARELLI Fabio, PONTES BITTENCOURT Roberto Carlos
Принадлежит: PETROLEO BRASILEIRO S.A. - PETROBRAS

This invention is aimed at making viable a catalyst and the process for obtaining it that besides having a higher resistance to the deposition of coke on the catalyst surface, does not introduce limitations to the process variables, maintains acceptable levels of activity throughout the steam reforming process and has a lower cost of production. The aforementioned objective is achieved by means of a catalyst formed by an inorganic oxide support, a mixture of Nickel, Lanthanum and Cerium and a promoter element. 1. A catalyst for the production of synthesis gas , nickel-based , to be used in a steam reforming process , with greater resistance to the deposition of coke on its surface and catalytic activity , comprising:an inorganic oxide support;{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3, 'a mixture of Nickel, Lanthanum and Cerium oxides, in the form of their oxides (NiO, LaOand CeO), which are impregnated simultaneously on the inorganic oxide support; the ratio between the mixture of NiO and LaOis comprised in a range of values between 6:1 (w/w) and 15:1 (w/w); the ratio of mixture of CeOand LaOcomprised in a range of values between 2:1 (w/w) and 4:1 (w/w) and the total content of NiO in a range comprised between values between 5% (w/w) and 50% (w/w), preferably between 7% (w/w) and 30% (w/w); and'}a promoter element comprised in a range of values between 0.3% (w/w) and 2.0% (w/w).2. The catalyst for the production of synthesis gas according to claim 1 , wherein the inorganic oxide of low surface acidity is selected from the group consisting of alumina claim 1 , calcium aluminate claim 1 , magnesium aluminate claim 1 , silica claim 1 , titanium oxide claim 1 , and mixtures of these compounds claim 1 , with a shape selected from spheres claim 1 , cylinders or cylinders with a central hole.3. The catalyst for the production of synthesis gas according to claim 1 , wherein the promoter element is selected from the group consisting of boron claim 1 , silver ...

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Номер записи: 98
27-08-2015 дата публикации

Alpha-alumina particles and method for manufacturing the same

Номер: US20150239746A1
Автор: Hiroshi Kinoshita, Jianjun Yuan
Принадлежит: DIC Corp

The present invention aims to provide a simple and efficient method for manufacturing α-alumina particles, main component particles of which each have a crystal face other than the face [001] as a main crystal face and a polyhedral shape other than a hexagonal bipyramidal shape. According to the method for manufacturing α-alumina particles of the present invention, when an aluminum compound is calcined in the presence of a specific content of a metal compound, α-alumina particles each having a particle diameter of 50 μm or less, a degree of α crystallization of 90% or more, and a polyhedral shape can be obtained.

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Номер записи: 99
25-07-2019 дата публикации

Oil free crystal growth modifiers for the bayer process

Номер: US20190225283A1
Автор: Dannon STIGERS, Marie E. Anderson
Принадлежит: Cytec Industries Inc

Disclosed herein are methods of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising a crystal growth modifier, which is at least one of an acyclic anhydride or an alkyl or alkenyl succinic anhydride, is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the crystal growth modifier. The process does not require the addition of a defoamer/anti-foam agent in order to control foam generated in the process.

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Номер записи: 100