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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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Применить Всего найдено 13909. Отображено 100.
10-11-2010 дата публикации

УСТАНОВКА СУХОГО ТУШЕНИЯ КОКСА

Номер: RU0000098994U1
Автор: Коробейников Анатолий Прокопьевич, Костенков Сергей Александрович, Лазарь Валерий Александрович, Филин Александр Николаевич
Принадлежит: Государственное образовательное учреждение высшего профессионального образования "СИБИРСКИЙ ГОСУДАРСТВЕННЫЙ ИНДУСТРИАЛЬНЫЙ УНИВЕРСИТЕТ"

Установка сухого тушения кокса, содержащая камеру тушения, пылеосадительный бункер, котел-утилизатор, основной дымосос, свечу для сброса избыточного газа из накопительной камеры в атмосферу, отличающаяся тем, что дополнительно содержит циклон на выходе пиролизного газа из накопительной камеры, соединенный с рукавными фильтрами и газопроводом прямого коксового газа, подающим коксовый газ из коксовых печей на переработку в химические цеха. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 98 994 (13) U1 (51) МПК C01B 39/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2010100102/22, 11.01.2010 (24) Дата начала отсчета срока действия патента: 11.01.2010 (45) Опубликовано: 10.11.2010 (73) Патентообладатель(и): Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" (RU) U 1 9 8 9 9 4 R U Ñòðàíèöà: 1 ru CL U 1 Формула полезной модели Установка сухого тушения кокса, содержащая камеру тушения, пылеосадительный бункер, котел-утилизатор, основной дымосос, свечу для сброса избыточного газа из накопительной камеры в атмосферу, отличающаяся тем, что дополнительно содержит циклон на выходе пиролизного газа из накопительной камеры, соединенный с рукавными фильтрами и газопроводом прямого коксового газа, подающим коксовый газ из коксовых печей на переработку в химические цеха. 9 8 9 9 4 (54) УСТАНОВКА СУХОГО ТУШЕНИЯ КОКСА R U Адрес для переписки: 654007, Кемеровская обл., г. Новокузнецк, ул. Кирова, 42, СибГИУ, патентный отдел (72) Автор(ы): Коробейников Анатолий Прокопьевич (RU), Филин Александр Николаевич (RU), Костенков Сергей Александрович (RU), Лазарь Валерий Александрович (RU) U 1 U 1 9 8 9 9 4 9 8 9 9 4 R U R U Ñòðàíèöà: 2 RU 5 10 15 20 25 30 35 40 45 50 98 994 U1 Полезная модель относится к коксохимическому производству, а именно к сухому тушению кокса. Известно устройство сухого тушения кокса [1], ...

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Номер записи: 1
05-01-2012 дата публикации

Catalyst for producing para-substituted aromatic hydrocarbon and method for producing para-substituted aromatic hydrocarbon using the same

Номер: US20120004487A1
Автор: Chikanori Nakaoka, Naoharu Igarashi
Принадлежит: JX Nippon Oil and Energy Corp

This invention relates to a novel catalyst which enables an efficient production of a high-purity para-substituted aromatic hydrocarbon even without conducting isomerization step and/or adsorption separation step, and more particularly to a catalyst for producing a para-substituted aromatic hydrocarbon, which is formed by coating an MFI-type zeolite having an SiO 2 /Al 2 O 3 ratio (molar ratio) of 20 to 5000 and a primary particle size of not more than 1 μm with a crystalline silicate and is characterized by having a pKa value as measured by a Hammett indicator of not less than −8.

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Номер записи: 2
08-03-2012 дата публикации

Zeolite-palladium complex, method for producing the same, catalyst containing the complex, and method for producing a coupling compound by using the catalyst

Номер: US20120059191A1
Автор: Hirosuke Matsui, Kazu Okumura, Miki Niwa, Shizuyo Okuda, Takuya Tomiyama, Yoshinori Enmi
Принадлежит: Individual

There is provided a substance having much higher catalytic activity for a Suzuki-Miyaura coupling reaction than conventional heterogenous catalysts. The present invention provides a zeolite-palladium complex including USY-zeolite and Pd supported on the USY-zeolite, the Pd having a Pd—Pd coordination number of 4 or less and an oxidation number of 0.5 or less.

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Номер записи: 3
10-05-2012 дата публикации

Method for preparing molecular sieves

Номер: US20120114552A1
Автор: Adeola Ojo, James N. Ziemer, Stacey I. Zones, Tracy M. Davis
Принадлежит: Chevron USA Inc

A method for synthesizing a molecular sieve comprising providing a reaction mixture sufficient to synthesize the molecular sieve, maintaining the reaction mixture under crystallization conditions, monitoring at least one viscometric parameter of the reaction mixture, and determining an endpoint based on the monitoring of the at least one viscometric parameter.

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Номер записи: 4
19-07-2012 дата публикации

Process for producing zeolite film, and zeolite film obtained by the process

Номер: US20120183759A1
Автор: Makiko Niino, Makoto Miyahara, Shinji Nakamura
Принадлежит: NGK Insulators Ltd

A process for producing a zeolite film is provided in which seed crystals thinly adhere to the surface of a support to form a thin and even zeolite film having fewer defects than conventional zeolite films. Also provided is a zeolite film obtained by the producing process. The process for producing the zeolite film comprises: a particle adhesion step of allowing a slurry, where zeolite particles which become seeds are dispersed, to flow down on the surface of a base material by the self-weight of the slurry, so that the zeolite particles adhere to the base material; and a film formation step of immersing the base material, to which the zeolite particles adhere, into a sol to carry out hydrothermal synthesis, thereby forming the zeolite film on the base material.

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Номер записи: 5
26-07-2012 дата публикации

Molecular Sieve Of MFS Framework Type With Controllable Average Size, Its Method of Making And Use

Номер: US20120190896A1
Автор: Machteld Maria Wilfried Mertens
Принадлежит: ExxonMobil Chemical Patents Inc

A method of making a crystalline molecular sieve of MFS framework type, preferably ZSM-57, from a synthesis mixture comprising at least one source of tetravalent element (Y), at least one source of trivalent element (X), at least one source of alkali metal hydroxide (MOH), at least one structure-directing-agent (R) and water, said alkali metal (M) comprising potassium, and having the following mole composition (expressed in terms of oxide): YO 2 :( p )X 2 O 3 :( q )OH − :( r )R:( s )H 2 O, wherein (p) is in the range from 0.005 to 0.05, (q) is in the range from 0.01 to 3, (r) is in the range from 0.03 to 2 and (s) is in the range from 10 to 75 (based on total weight of said synthesis mixture); wherein the crystals of molecular sieve formed having an average diameter (D) of less than or equal to 1.5 micron and an average thickness (T) of less than or equal to 300 nanometers.

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Номер записи: 6
02-08-2012 дата публикации

Method for producing ddr zeolite

Номер: US20120196739A1
Автор: Makiko Niino, Tetsuya Uchikawa
Принадлежит: NGK Insulators Ltd

Disclosed is a method for producing a DDR zeolite, which can be carried out using materials that are less harmful to the environment. The method for producing a DDR zeolite has a short hydrothermal synthesis time and does not require continuous agitation of the raw material solution. Specifically disclosed is a method for producing a DDR zeolite, which comprises: a raw material solution preparation step in which a raw material solution that contains 1-adamantaneamine, silica (SiO 2 ) and water at a molar ratio 1-adamantaneamine/SiO 2 of 0.002-0.5 and a molar ratio water/SiO 2 of 10-500 but does not contain ethylenediamine is prepared; and a crystal growth step in which hydrothermal synthesis is carried out while having the raw material solution and a DDR zeolite powder in contact with each other, so that crystals of DDR zeolite are grown using the DDR zeolite powder as a seed crystal.

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Номер записи: 7
06-09-2012 дата публикации

Molecular Sieve Composition (EMM-10), Its Method of Making, and Use for Hydrocarbon Conversions

Номер: US20120226084A1
Автор: Douglas Lewis Dorset, Michael Charles Kerby, Mohan Kalyanaraman, Simon Christopher Weston, Thomas Yorke, Wieslaw J. Roth
Принадлежит: ExxonMobil Chemical Patents Inc

This invention relates to a process for hydrocarbon conversion comprising contacting a hydrocarbon feedstock with a crystalline molecular sieve, in its ammonium exchanged form or in its calcined form, under conversion conditions to form a conversion product, said crystalline molecular sieve comprising unit cells with MWW topology and is characterized by diffraction streaking from the unit cell arrangement in the c direction as evidenced by the arced hk0 patterns of electron diffraction pattern.

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Номер записи: 8
01-11-2012 дата публикации

Dehydroxylation pretreatment of inorganic materials in mesopore introduction process

Номер: US20120275993A1
Автор: David H. Olson
Принадлежит: Rive Technology Inc

Mesoporous compositions and methods for preparing mesoporous and/or mesostructured materials from inorganic materials are provided. Various embodiments described herein relate to the preparation of mesoporous and/or mesostructured zeolites via a dehydroxylation pretreatment followed by a mesopore introduction step.

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Номер записи: 9
01-11-2012 дата публикации

Double-component modified molecular sieve with improved hydrothermal stability and production method thereof

Номер: US20120275994A1
Автор: Di Li, Dong Ji, Haitao Zhang, Hongchang Duan, Xionghou Gao, Yanbo Sun, Yanqing Ma, YI Su, Yi Wang, Zhengguo Tan, Zhicheng Tang
Принадлежит: Petrochina Co Ltd

A method for producing double-component modified molecular sieve comprises adding molecular sieve to an aqueous solution containing phosphorus to form a mixture, allowing the mixture to react at pH of 1-10, temperature of 70-200° C. and pressure of 0.2-1.2 MPa for 10-200 min, and then filtering, drying and baking the resultant to obtain phosphorus-modified molecular sieve, and then adding the phosphorus-modified molecular sieve to an aqueous solution containing silver ions, allowing the phosphorus-modified molecular sieve to react with silver ions at 0-100° C. in dark condition for 30-150 min, and then filtering, drying and baking. The obtained double-component modified molecular sieve contains 88-99 wt % molecular sieve with a ratio of silica to alumina between 15 and 60, 0.5-10 wt % phosphorus (based on oxides) and 0.01-2 wt % silver (based on oxides), all based on dry matter. A catalyst produced from the double-component modified molecular sieve has improved hydrothermal stability and microactivity.

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Номер записи: 10
31-01-2013 дата публикации

Fluid Filtration Medium

Номер: US20130026103A1
Автор: Ronald L. Coufal, Stephen L. Peterson
Принадлежит: Zeotech Corp

The present application relates to improved filtration of fluids. Particularly, a surfactant-treated zeolite material may be utilized for removing turbid particles from a volume of fluid, such as water.

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Номер записи: 11
11-04-2013 дата публикации

HYDROCRACKING PROCESS USING A ZEOLITE MODIFIED BY BASIC TREATMENT

Номер: US20130090233A1
Автор: Guillon Emmanuelle, SIMON Laurent
Принадлежит: IFP ENERGIES NOUVELLES

The present invention describes a hydrocracking and/or hydrotreatment process using a catalyst comprising an active phase containing at least one hydrogenating/dehydrogenating component selected from the group VIB elements and the non-precious elements of group VIII of the periodic table, used alone or in a mixture, and a support comprising at least one dealuminated zeolite Y having an overall initial atomic ratio of silicon to aluminium between 2.5 and 20, an initial weight fraction of extra-lattice aluminium atoms greater than 10%, relative to the total weight of aluminium present in the zeolite, an initial mesopore volume measured by nitrogen porosimetry greater than 0.07 ml·gand an initial crystal lattice parameter abetween 24.38 Å and 24.30 Å, said zeolite being modified by a) a stage of basic treatment comprising mixing said dealuminated zeolite Y with a basic aqueous solution, and at least one stage c) of thermal treatment. 110-. (canceled)11. A process for modifying a dealuminated zeolite Y comprising a) a stage of basic treatment comprising mixing said dealuminated zeolite Y with a basic aqueous solution , said basic aqueous solution being a solution of basic compounds selected from alkaline bases and strong non-alkaline bases , said stage a) being carried out at a temperature between 40 and 100° C. and for a duration between 5 minutes and 5 h and at least one stage c) of thermal treatment carried out at a temperature between 200 and 700° C.12. A modified dealuminated zeolite Y obtained by the process for modifying according to .13. A modified dealuminated zeolite Y according to characterized in that said zeolite has a final mesopore volume measured by nitrogen porosimetry at least 10% greater relative to the initial mesopore volume of the dealuminated initial zeolite USY claim 12 , a final micropore volume measured by nitrogen porosimetry that must not decrease by more than 40% claim 12 , relative to the initial micropore volume of said dealuminated ...

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Номер записи: 12
11-04-2013 дата публикации

Organotemplate-Free Synthetic Process For The Production Of A Zeolitic Material Of The LEV-Type Structure

Номер: US20130090234A1
Автор: Müller Ulrich, Pfaff Meike, XIAO Feng-Shou, Xie Bin, Yilmaz Bilge, Zhang Haiyan
Принадлежит: BASF SE

Described is an organotemplate-free synthetic process for the production of a zeolitic material having an LEV-type framework structure comprising YOand optionally comprising XO, wherein said process comprises: 139-. (canceled)40. An organotemplate-free synthetic process for the production of a zeolitic material having an LEV-type framework structure comprising YOand optionally comprising XO , wherein said process comprises the steps of{'sub': '2', '(1) preparing a mixture comprising seed crystals and one or more sources for YO; and'}(2) crystallizing the mixture obtained in step (1);wherein Y is Si, and X is a trivalent element,wherein the zeolitic material optionally comprises one or more alkali metals M, andwherein the seed crystals comprise zeolitic material having an LEV-type framework structure.41. The process of claim 40 , wherein the mixture in step (1) further comprises one or more sources for XO.42. The process of claim 41 , wherein X is selected from the group consisting of Al claim 41 , B claim 41 , In claim 41 , Ga claim 41 , and mixtures of two or more thereof.43. The process of claim 40 , wherein the seed crystals comprise one or more zeolites selected from the group consisting of Levyne claim 40 , LZ-132 claim 40 , NU-3 claim 40 , RUB-1 claim 40 , ZK-20 claim 40 , ZSM-45 claim 40 , RUB-50 claim 40 , and mixtures of two or more thereof.44. The process of claim 40 , wherein the one or more sources for YOcomprises silica.45. The process of claim 41 , wherein the one or more sources for XOcomprises at least one aluminate salt.46. The process of claim 45 , wherein the one or more sources for XOcomprises sodium and/or potassium aluminate.47. The process of claim 41 , wherein the YO:XOmolar ratio of the mixture according to step (1) ranges from 0.5 to 300.48. The process of claim 40 , wherein the amount of seed crystals in the mixture according to step (1) ranges from 0.01 to 30 wt.-% based on 100 wt.-% of YOin the at least one source for YO.49. The process ...

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Номер записи: 13
18-04-2013 дата публикации

PROCESS FOR PRODUCING PHOSPHORUS MODIFIED ZEOLITE CATALYSTS

Номер: US20130096358A1
Автор: HAMILTON MERCI A., LAI WENYIH FRANK, McCarthy Stephen J.
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

In a process for producing a phosphorus-modified zeolite catalyst, an aqueous reaction mixture comprising a source of silica and a source of an organic directing agent effective to direct the synthesis of a desired zeolite is heated at a temperature and for a time sufficient to produce crystals of the desired zeolite. Wet zeolite crystals can then be separated from the reaction mixture and, without removing all the water from the wet zeolite crystals, the zeolite can be converted into the ammonium form by ion exchange, and the crystals can be treated with a phosphorus compound. The phosphorus-treated, ammonium-exchanged zeolite can then be formed into a catalyst to be heated in one or more stages to remove the water and organic directing agent from the zeolite crystals and to convert the zeolite to the hydrogen form. 1. A process for producing a phosphorus-modified zeolite catalyst , said process comprising:(a) heating an aqueous reaction mixture comprising a source of silica and a source of an organic directing agent effective to direct the synthesis of a desired zeolite from said mixture, said heating being conducted at a temperature and for a time sufficient to produce crystals of the desired zeolite;(b) separating wet zeolite crystals from the mixture produced in (a); (i) converting the zeolite into the ammonium form by ion exchange; and', '(ii) treating the crystals with a phosphorus compound;, '(c) without removing all the water from the wet zeolite crystals, effecting the steps of(d) forming the phosphorus-treated, ammonium-exchanged zeolite from (c) into a catalyst; and(e) heating the catalyst in one or more stages to remove the water and organic directing agent from the zeolite crystals and to convert the ammonium form zeolite to the hydrogen form.2. The process of claim 1 , wherein said reaction mixture also comprises a source of alumina.3. The process of claim 2 , wherein a molar ratio of silica to alumina in the reaction mixture is from about 20 to about ...

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Номер записи: 14
25-04-2013 дата публикации

Process For The Production Of A Core/Shell Zeolitic Material Having A CHA Framework Structure

Номер: US20130101503A1
Автор: Bao Xinhe, De Vos Dirk, Gies Hermann, IMAI Hiroyuki, Müller Ulrich, Ren Limin, Tatsumi Takashi, Tijsebaert Bart, XIAO Feng-Shou, Yang Chengguan, Yilmaz Bilge, Zhang Weiping
Принадлежит:

The present invention relates to a process for the preparation of a zeolitic material having a CHA framework structure, said zeolitic material comprising zeolite crystals having a core-shell structure, wherein said process comprises the steps of 1. A process for the preparation of a zeolitic material having a CHA framework structure , said zeolitic material comprising zeolite crystals having a core-shell structure , wherein said process comprises the steps of{'sub': 2', '5', '2', '3', '2', '2', '3', '2', '5, '(1) providing a mixture comprising one or more sources for ZO, one or more sources for XO, optionally one or more structure directing agents, and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises YO, XO, and optionally ZO, and wherein the seed crystals have a diameter of 450 nm or greater; and'}(2) crystallizing the mixture provided in (1) to afford zeolite crystals comprising a core of seed crystal provided in step (1) and a shell crystallized on the seed crystal;wherein Z is a pentavalent element, Y is a tetravalent element, and X is a trivalent element.2. The process of claim 1 , wherein the seed crystals have a diameter comprised in the range of from 450 nm to 50 μm.3. The process according to claim 1 , wherein the CHA framework structure of the seed crystals displays a Y:X molar ratio comprised in the range of from 1 to 100 claim 1 , and{'sub': 2', '5', '2', '2', '3, 'wherein if the CHA framework structure of the seed crystals further comprises ZOin addition to YOand XO, the seed crystals display a Y:nX:pZ molar ratio, wherein the value for the ratio (1+2p):(n−p) is comprised in the range of from 1 to 100.'}4. The process according to claim 1 , wherein one or more sources for YOare further provided in step (1) claim 1 , wherein Y comprised in the seed crystalsand/or,{'sub': '2', 'wherein Y further provided in step (1) in the one or more sources for YOare, independently from one another, ...

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Номер записи: 15
09-05-2013 дата публикации

Synthesis of mse-framework type molecular sieves

Номер: US20130115163A1
Автор: Hilda B. Vroman, Karl G. Strohmaier, Simon C. Weston
Принадлежит: ExxonMobil Research and Engineering Co

A method of synthesizing a crystalline molecular sieve having an MSE framework type comprises crystallizing a reaction mixture comprising a source of water, a source of an oxide of a tetravalent element, Y, selected from at least one of silicon, tin, titanium, vanadium, and germanium, optionally a source of a trivalent element, X, a source of an alkali or alkaline earth metal, M, and a source of organic dications, Q, such as 3-hydroxy-1-(4-(1-methylpiperidin-1-ium-1 yl)butyl)quinuclidin-1-ium, 3-hydroxy-1-(5-(1-methylpiperidin-1-ium-1-yl)pentyl)quinuclidin-1-ium, 1,1′-(butane-1,4-diyl)bis(1-methylpiperidin-1-ium), 1,1′-(pentane-1,5-diyl)bis(1-methylpiperidin-1-ium), 1,1′-(hexane-1,6-diyl)bis(1-methylpiperidin-1-ium), and 1,1′-((3as,6as)-octahydropentalene-2,5-diyl)bis(1-methylpiperidin-1-ium).

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Номер записи: 16
09-05-2013 дата публикации

Method for Magnetising Natural and Synthetic Aluminosilicates

Номер: US20130116339A1
Автор: Altbir Dora, Casagrande Juliano, Escudey Mauricio, Fabris José, Gutierrez Marlen
Принадлежит: Universidad de Santiago de Chile

Procedure for the magnetization of different inorganic surfaces, whether natural or synthetic, such as aluminosilicates, both synthetic and natural (natural zeolites, synthetic zeolites, alumina, allophane, among others) that give magnetic properties to those surfaces. Objectives of the present application are also the above mentioned surfaces, magnetized, and their different uses. 1. Procedure for the magnetization of inorganic surfaces CHARACTERIZED because it comprises coating those surfaces with magnetite by in situ co precipitation of iron oxide.2. Procedure according to CHARACTERIZED because it uses a solution of FeSOwith an Fe concentration of 0.1 to 2 M claim 1 , depending on the surface that it is desired to coat.3. Procedure according to CHARACTERIZED because it is carried out in an inert atmosphere and at a temperature of 363±5° K.4. Procedure according to CHARACTERIZED because after adding the surface that it is desired to coat claim 1 , a 0.001 M solution of KNOprepared in 8 M NHOH is added.5. Procedure according to CHARACTERIZED because said inorganic surfaces can be natural or synthetic claim 1 , such as natural as well as synthetic aluminosilicates claim 1 , natural zeolites claim 1 , synthetic zeolites claim 1 , alumina claim 1 , allophane claim 1 , among others.6. Use of magnetized inorganic surfaces claim 1 , such as aluminosilicates claim 1 , CHARACTERIZED because they serve to eliminate organic as well as inorganic contaminants and radioactive elements in solution claim 1 , in addition to serving for the controlled release of medicines claim 1 , as catalysts claim 1 , in industrial processes claim 1 , in agronomic applications claim 1 , in animal nutrition and health claim 1 , among others.7. Use of magnetic zeolite CHARACTERIZED because it serves for the removal of oil spills on water.8. Magnetic zeolite CHARACTERIZED because it has a magnetization of 80 emu/g. The objective of the present application is the procedure for the magnetization of ...

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Номер записи: 17
16-05-2013 дата публикации

Mesoporous y hydrocracking catalyst and associated hydrocracking processes

Номер: US20130118954A1
Автор: Ajit B. Dandekar, Christopher G. Oliveri, Jianxin Jason Wu
Принадлежит: ExxonMobil Research and Engineering Co

This invention relates to the composition, method of making and use of a hydrocracking catalyst that is comprised of a new Y zeolite which exhibits an exceptionally low small mesoporous peak around the 40 Å (angstrom) range as determined by nitrogen adsorption measurements. The hydrocracking catalysts of invention exhibit improved distillate yield and selectivity as well as improved conversions at lower temperatures than conventional hydrocracking catalysts containing Y zeolites. The hydrocracking catalysts herein are particularly useful in the hydrocracking processes as disclosed herein, particularly for conversion of heavy hydrocarbon feedstocks such as gas oils and vacuum tower bottoms and an associated maximization and/or improved selectivity of the distillate yield obtained from such hydrocracking processes.

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Номер записи: 18
23-05-2013 дата публикации

Organotemplate-free Synthetic Process for the Production of a Zeolitic Material of the CHA-Type Structure

Номер: US20130129611A1
Автор: Jin Hanpeng, Maurer Stefan, Müller Ulrich, Yang Jeff
Принадлежит: BASF SE

The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a CHA-type framework structure comprising YO, XO, and optionally comprising ZO, wherein said process comprises the steps of: 1. An organotemplate-free synthetic process for the production of a zeolitic material having a CHA-type framework structure comprising YO , XO , and optionally comprising ZO , wherein said process comprises the steps of:{'sub': 2', '2', '3', '2', '2', '3', '2', '5, '(1) providing a mixture comprising one or more sources for YO, one or more sources for XO, and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises YO, XO, and optionally comprises ZO; and'}(2) crystallizing the mixture obtained in step (1);wherein Y is a tetravalent element, X is a trivalent element, and Z is a pentavalent element,{'sub': 2', '5, 'wherein optionally one or more sources for ZOare further provided in step (1), and'}{'sub': 2', '5', '2', '2', '3, 'wherein if the CHA framework structure of the seed crystals does not contain ZO, the seed crystals then have a YO:XOmolar ratio of 5 or greater than 5.'}2. The process of claim 1 , wherein if the CHA framework structure of the seed crystals further comprises ZOin addition to YOand XO claim 1 , the seed crystals then have a YO: nXO:pZOmolar ratio claim 1 , wherein the value for the ratio (1+2p):(n−p) is 5 or greater than 5.3. The process of claim 1 , wherein the YO:XOmolar ratio of the mixture provided in step (1) ranges from 1 to 200.4. The process of claim 1 , wherein the mixture provided in step (1) comprises one or more alkali metals M.5. The process of claim 4 , wherein the MO:YOmolar ratio in the mixture according to step (1) ranges from 0.01 to 5.6. The process of claim 4 , wherein the YO:XO:MO molar ratios in the mixture according to step (1) range from (5-100):1:(0.5-50).7. The process of claim 1 , wherein the mixture provided in step ...

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Номер записи: 19
23-05-2013 дата публикации

Process for Ion Exchange on Zeolites

Номер: US20130129612A1
Автор: Hermann Luyken, Manuela Gaab, Rolf-Hartmuth Fischer
Принадлежит: BASF SE

Aspects of the present invention relate to an improved process for exchanging alkali metal or alkaline earth metal ions in zeolites for ammonium ions. For this exchange, aqueous solutions of ammonium salts, for example ammonium sulfate, ammonium nitrate or ammonium chloride, are currently being used. The resulting “ammonium zeolites” are calcined to convert them, with release of ammonia, to the H form of the zeolites suitable as a catalyst. Certain methods provided herein use ammonium carbonate instead of the ammonium compounds mentioned. As excess ammonium carbonate, in contrast to the nitrates, sulfates or chlorides, can be recycled in the form of carbon dioxide and ammonia, the amount of salt which has to be discharged is lowered significantly.

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Номер записи: 20
23-05-2013 дата публикации

Process for Ion Exchange on Zeolites

Номер: US20130129613A1
Автор: Luyken Hermann, Owens William Todd
Принадлежит: BASF SE

Aspects of the present invention relate to an improved process for exchanging sodium ions in zeolites comprising sodium ions and rare earth metal ions for ammonium ions. For this exchange, aqueous solutions of ammonium salts, for example ammonium sulfate, ammonium nitrate or ammonium chloride, are currently being used. The resulting “ammonium zeolites” are calcined to convert them, with release of ammonia, to the H form of the zeolites suitable as a catalyst. The use of ammonium carbonate also minimizes the amount of rare earth metal ions which are leached out of the zeolites comprising rare earth metal ions. 1. A method for exchanging sodium ions in zeolites comprising sodium ions and rare earth metal ions for ammonium ions , the method comprising treating the zeolite comprising sodium ions and rare earth metal ions with a solution comprising water and ammonium carbonate.2. The method of claim 1 , wherein after treatment claim 1 , the zeolite has a content of rare earth metal ions of 0.01 to 10% by weight (expressed as REO).3. The method of claim 2 , wherein the content of rare earth metal ions is 0.1 to 8% by weight.4. The method of claim 3 , wherein the content of rare earth metal ions is 0.5 to 5% by weight.5. The method of claim 1 , wherein the zeolite comprises ZSM-5 X claim 1 , Y claim 1 , A claim 1 , L claim 1 , faujasite claim 1 , chabazite claim 1 , erionite claim 1 , mordenite claim 1 , or offretite.6. The method of claim 1 , wherein the solution comprising water and ammonium carbonate is prepared from water claim 1 , ammonium carbonate and a further compound selected from the group consisting of urea claim 1 , ammonium carbamate claim 1 , mixtures of carbon dioxide and ammonia claim 1 , and mixtures thereof.7. The method of claim 1 , wherein the rare earth metal comprises an element selected from the group consisting of lanthanum claim 1 , cerium claim 1 , praseodymium and neodymium claim 1 , and combinations thereof.8. The method of claim 7 , wherein ...

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Номер записи: 21
06-06-2013 дата публикации

Stabilized microporous crystalline material, the method of making the same, and the use for selective catalytic reduction of nox

Номер: US20130142727A1
Автор: Bjorn Moden, Hong-Xin Li, William E. Cormier
Принадлежит: PQ Corp

There is disclosed a microporous crystalline material having pore opening ranging from 3 to 5 Angstroms, where the material comprises a first metal chosen from alkali earth group, rare earth group, alkali group, or mixtures thereof, and a second metal chosen from iron, copper or mixtures thereof; and has a molar silica to alumina ratio (SAR) from 3 to 10. The microporous crystalline material disclosed herein may comprise a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings as exemplified with framework types defined by the Structure Commission of the International Zeolite Association having structural codes of CHA, LEV, AEI, AFT, AFX, EAB, ERI, KFI, SAT, TSC, and SAV. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material.

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Номер записи: 22
20-06-2013 дата публикации

ZEOLITE PRODUCTION METHOD

Номер: US20130156690A1
Автор: Elangovan Shanmugam P., Itabashi Keiji, KAMIMURA Yoshihiro, Okubo Tatsuya
Принадлежит:

Disclosed is a method for readily and inexpensively producing zeolite without using an organic structure-directing agent (organic SDA). Specifically disclosed is a method whereby a gel containing a silica source, an alumina source, an alkaline source and water is reacted with zeolite seed crystals, to produce a zeolite with the same kind of skeletal structure as the zeolite. The gel used is a gel of a composition whereby, when a zeolite is synthesized from this gel only, the synthesized zeolite comprises at least one of the kinds of composite building units of the target zeolite. 1. A method of producing a zeolite in which a gel including a silica source , an alumina source , an alkali source and water , and zeolite seed crystals are reacted so as to produce a zeolite having the same kind of skeletal structure as the zeolite ,wherein a gel having a composition which, when the zeolite is synthesized from the gel alone, makes the synthesized zeolite include at least one of composite building units of a target zeolite as the composite building unit is used as the gel.2. The method of producing a zeolite according to claim 1 ,wherein a gel having a composition which makes a zeolite synthesized from the gel alone have a different kind of skeletal structure from the zeolite of the seed crystals is used as the gel.3. The method of producing a zeolite according to claim 2 ,wherein the target zeolite is MFI zeolite,MFI zeolite is used as the seed crystals, anda gel having a composition which, when the zeolite is synthesized from the gel alone, makes the synthesized zeolite become mordenite is used as the gel.4. The method of producing a zeolite according to claim 3 ,wherein a gel having a composition shown in the following (a) or (b) is used as the gel,(a){'sub': 2', '2', '3, 'SiO/AlO=40 to 200,'}{'sub': 2', '2, 'NaO/SiO=0.24 to 0.4,'}{'sub': 2', '2, 'HO/SiO=10 to 50,'}(b){'sub': 2', '2', '3, 'SiO/AlO=10 to 40,'}{'sub': 2', '2, 'NaO/SiO=0.05 to 0.25,'}{'sub': 2', '2, 'HO/SiO ...

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Номер записи: 23
27-06-2013 дата публикации

UZM-39 ALUMINOSILICATE ZEOLITE

Номер: US20130164212A1
Автор: Miller Mark A., Nicholas Christopher P.
Принадлежит: UOP LLC

A new family of coherently grown composites of TUN and IMF zeotypes have been synthesized. These zeolites are represented by the empirical formula. 2. The process of further comprising modifying the coherently grown composite using a technique selected from the group consisting of calcination claim 1 , ion-exchange claim 1 , steaming claim 1 , acid treatment claim 1 , acid extraction claim 1 , and combinations thereof.3. The process of wherein L is at least one microporous layered zeolite with crystal thickness in at least one dimension of less than about 30 to about 50 nm.4. The process of wherein L is at least one microporous layered zeolite with pore diameters of less than about 2 nm.6. The process of wherein L is at least one microporous layered zeolite with crystal thickness in at least one dimension of less than about 30 to about 50 nm.7. The process of wherein L is at least one microporous layered zeolite with pore diameters of less than about 2 nm.8. The process of further comprising modifying the coherently grown composite using a technique selected from the group consisting of calcination claim 5 , ion-exchange claim 5 , steaming claim 5 , acid treatment claim 5 , acid extraction claim 5 , and combinations thereof. This application claims priority from Provisional Application No. 61/578,909 filed Dec. 22, 2011, the contents of which are hereby incorporated by reference.This invention relates to a new family of aluminosilicate zeolites designated UZM-39. They are represented by the empirical formula of:NaMTAlESiOwhere M represents a metal or metals from zinc or Group 1 (IUPAC 1), Group 2 (IUPAC 2), Group 3 (IUPAC 3) or the lanthanide series of the periodic table, T is the organic directing agent derived from reactants R and Q where R is an A,Ω-dihalosubstituted alkane such as 1,4-dibromobutane and Q is at least one neutral amine having 6 or fewer carbon atoms such as 1-methylpyrrolidine. E is a framework element such as gallium.Zeolites are crystalline ...

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Номер записи: 24
27-06-2013 дата публикации

Uzm-39 aluminosilicate zeolite

Номер: US20130164213A1
Автор: Christopher P. Nicholas, Mark A. Miller, Robert W. Broach, Wharton Sinkler
Принадлежит: UOP LLC

A new family of coherently grown composites of TUN and IMF zeotypes have been synthesized. These zeolites are represented by the empirical formula. Na n M m k+ T t Al 1−x E x Si y O z where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zinc, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. These zeolites are similar to TNU-9 and IM-5 but are characterized by unique compositions and synthesis procedures and have catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for carrying out various separations.

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Номер записи: 25
18-07-2013 дата публикации

INTRODUCTION OF MESOPOROSITY INTO INORGANIC MATERIALS IN THE PRESENCE OF A NON-IONIC SURFACTANT

Номер: US20130183229A1
Автор: Garcia-Martinez Javier
Принадлежит: Rive Technology, Inc.

Compositions and methods for introducing mesoporosity into inorganic materials in the presence of a non-ionic surfactant are disclosed herein. Mesopores can be introduced into inorganic materials, such as zeolites, by treating the inorganic materials with a non-ionic surfactant. The resulting mesoporous inorganic materials can have a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g and a crystalline content of at least 20 weight percent as measured by X-ray diffraction. 1. A method of forming a material comprising a mesoporous inorganic material having long-range crystallinity , said method comprising:contacting an initial inorganic material having long-range crystallinity with a non-ionic surfactant thereby forming said mesoporous inorganic material having long-range crystallinity,wherein said mesoporous inorganic material having long-range crystallinity has a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g,wherein said mesoporous inorganic material having long-range crystallinity has a crystalline content of at least 20 weight percent as measured by X-ray diffraction (“XRD”).2. The method of claim 1 , wherein said mesoporous inorganic material having long-range crystallinity has a total 20 to 135 Å diameter mesopore volume of at least 0.1 cc/g.3. The method of claim 1 , wherein said mesoporous inorganic material having long-range crystallinity has a crystalline content of at least at least 40 weight percent as measured by XRD.4. The method of claim 1 , wherein said mesoporous inorganic material having long-range crystallinity has a total 0 to 20 Å diameter micropore volume in the range of from about 0 to about 0.40 cc/g.5. The method of claim 1 , wherein said mesoporous inorganic material having long-range crystallinity has a total 20 to 135 Å diameter mesopore volume that is at least 50 percent greater than the 20 to 135 Å diameter mesopore volume of said initial inorganic material having long-range crystallinity.6. The method of ...

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Номер записи: 26
18-07-2013 дата публикации

INTRODUCTION OF MESOPOROSITY INTO LOW SILICA ZEOLITES

Номер: US20130183230A1
Автор: Beaver Michael G., Garcia-Martinez Javier, Li Kunhao
Принадлежит: Rive Technology, Inc.

Mesoporous X and A zeolites and methods for production thereof are disclosed herein. Such mesoporous zeolites can be prepared by contacting an initial zeolite with an acid in conjunction with a mesopore forming agent. The initial zeolite can have a framework silicon-to-aluminum content in the range of from about 1 to about 2.5. Additionally, such mesoporous zeolites can have a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g. 1. A method of forming a material comprising a mesoporous zeolite , said method comprising:(a) contacting an initial zeolite with a mesopore forming agent thereby forming a first treatment mixture comprising said initial zeolite and said mesopore forming agent; and(b) introducing an acid into said first treatment mixture thereby forming a second treatment mixture comprising said mesoporous zeolite, said mesopore forming agent, and said acid,wherein said initial zeolite has a framework silicon-to-aluminum ratio (“Si/Al”) in the range of from about 1 to about 2.5.2. The method of claim 1 , wherein said mesoporous zeolite has a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g.3. The method of claim 1 , wherein said mesoporous zeolite has a crystalline content of at least 10 weight percent as measured by X-ray diffraction (“XRD”).4. The method of claim 1 , wherein said mesoporous zeolite has a total 20 to 135 Å diameter mesopore volume that is at least 0.02 cc/g greater than the 20 to 135 Å diameter mesopore volume of said initial zeolite.5. The method of claim 1 , wherein said initial zeolite is selected from the group consisting of zeolite A and zeolite X.6. The method of claim 1 , wherein said mesoporous zeolite is a mesostructured zeolite.7. The method of claim 1 , wherein said acid is present in an initial amount in the range of from about 1 to about 10 milliequivalents per gram of said initial zeolite.8. The method of claim 1 , wherein said acid is present in an initial amount in the range of from about 2 to ...

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Номер записи: 27
18-07-2013 дата публикации

INTRODUCTION OF MESOPOROSITY INTO ZEOLITE MATERIALS WITH SEQUENTIAL ACID, SURFACTANT, AND BASE TREATMENT

Номер: US20130183231A1
Автор: Qureshi Mohammad Ibrahim, Senderov Ernest
Принадлежит: Rive Technology, Inc.

Compositions and methods for introducing mesoporosity into zeolitic materials employing sequential acid, surfactant, and base treatments are disclosed herein. Mesopores can be introduced into zeolitic materials, such as zeolites, by treatment with an acid and surfactant followed by treatment with a base. The resulting mesoporous zeolitic materials can have a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g. Additionally, the resulting mesoporous zeolitic materials can have a total 0 to 20 Å micropore volume of at least 0.10 cc/g. 1. A method of forming a material comprising a mesoporous zeolitic material having long-range crystallinity , said method comprising:(a) contacting an initial zeolitic material having long-range crystallinity with an acid to thereby form an acid-treated zeolitic material having long-range crystallinity;(b) contacting said acid-treated zeolitic material having long-range crystallinity with a surfactant to thereby form a first treatment mixture comprising said surfactant and an intermediate surfactant-treated material;(c) recovering at least a portion of said intermediate surfactant-treated material from said first treatment mixture thereby forming an at least partially isolated intermediate surfactant-treated material; and(d) contacting said at least partially isolated intermediate surfactant-treated material with a base thereby forming said mesoporous zeolitic material having long-range crystallinity.2. The method of claim 1 , wherein said mesoporous zeolitic material having long-range crystallinity has a total 20 to 135 Å diameter mesopore volume of at least 0.1 cc/g.3. The method of claim 1 , wherein said mesoporous zeolitic material having long-range crystallinity has a crystalline content of at least 40 weight percent as measured by X-ray diffraction (“XRD”).4. The method of claim 3 , wherein said mesoporous zeolitic material having long-range crystallinity exhibits said crystalline content after steaming at 1 claim 3 , ...

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Номер записи: 28
18-07-2013 дата публикации

Glycoxy silanes as a source of silica and silicate precipitates

Номер: US20130183232A1
Автор: David J. Krug, Julien C. MARCHAL, Richard M. Laine, Vera Popova
Принадлежит: David J. Krug, Julien C. MARCHAL, Richard M. Laine, Vera Popova

The present invention discloses glycoxy silanes as a source of silica and silica precipitated by advantageous chemical reactions preferably beginning with biogenic silica. Alkoxy C—O—S 1 are hydrolyzed in a controlled fashion to nucleate formation of nanoparticles of silica. The growth rate of the particles is controlled by various parameters such that particles of known sizes, size distributions, specific surface areas and pore sizes and size distributions are recovered.

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Номер записи: 29
08-08-2013 дата публикации

Iron- And Copper-Containing Zeolite Beta From Organotemplate-Free Synthesis And Use Thereof In The Selective Catalytic Reduction Of NOx

Номер: US20130202524A1
Автор: Deuerlein Stephan, Maurer Stefan, Petry Julia, SHI Chuan, Takashi Hihara, Wycisk Michael, Zhang Weiping
Принадлежит: BASF SE

Provided is a process for the production of a zeolitic material having a BEA-type framework structure comprising YOand XO. The process comprises the steps of (1) preparing a mixture comprising one or more sources for YO, one or more sources for XO, and seed crystals comprising one or more zeolitic materials having a BEA-type framework structure; (2) crystallizing the mixture; and (3) subjecting the zeolitic material having a BEA-type framework structure to an ion-exchange procedure with Cu and/or Fe. Y is a tetravalent element, and X is a trivalent element. The mixture does not contain an organotemplate as structure-directing agent, and the total amount of Cu and/or Fe in the ion-exchanged material ranges from 0.1 to 25 wt.-% calculated as FeOand CuO. Also provided is a zeolitic material having a BEA-type framework structure, and a method for the treatment of NOby selective catalytic reduction (SCR). 2. The process of claim 1 , wherein the zeolitic material obtained in step (2) comprises one or more alkali metals M claim 1 , wherein M is selected from the group consisting of Li claim 1 , Na claim 1 , K claim 1 , Cs claim 1 , and combinations of two or more thereof.3. The process of claim 1 , wherein Y is selected from the group consisting of Si claim 1 , Sn claim 1 , Ti claim 1 , Zr claim 1 , Ge claim 1 , and a mixture of two or more thereof.4. The process of claim 1 , wherein the one or more sources for YOprovided in step (1) comprises one or more silicates.5. The process of claim 4 , wherein the one or more sources for YOfurther comprises one or more silicas in addition to the one or more silicates.6. The process of claim 4 , wherein the mixture provided in step (1) comprises water glass.7. The process of claim 1 , wherein X is selected from the group consisting of Al claim 1 , B claim 1 , In claim 1 , Ga claim 1 , and a mixture of two or more thereof.8. The process of claim 1 , wherein the one or more sources for XOcomprises one or more aluminate salts.9. The ...

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Номер записи: 30
22-08-2013 дата публикации

FILM FORMED BY SECONDARY GROWTH OF SEED CRYSTALS, THREE CRYSTAL AXES OF WHICH HAD ALL BEEN UNIFORMLY ORIENTED ON SUBSTRATE

Номер: US20130216772A1
Автор: Pham CaoThanhTung, YOON Kyung Byung
Принадлежит: Industry-University Cooperation Foundation Sogang University

The present invention provides a method for preparing a thin or thick film, comprising the steps of: (1) arranging non-spherical seed crystals on a substrate such that all the a-, b- and c-axes of each seed crystal are oriented under a predetermined rule; and (2) forming and growing the film from the seed crystals through secondary growth by exposing the arranged seed crystals of step (1) to a seed crystal growth solution. The invention also provides a film prepared by the method. According to the invention, crystals or films larger than the seed crystals can be prepared. 1. A method for preparing a thin or thick film , comprising the steps of:(1) arranging non-spherical seed crystals on a substrate such that all the a-, b- and c-axes of each seed crystal are oriented under a predetermined rule; and(2) forming and growing the film from the seed crystals through secondary growth by exposing the arranged seed crystals of step (1) to a seed crystal growth solution.2. The method of claim 1 , wherein the seed crystal growth solution used in step (2) contains a structure-directing agent.3. (canceled)4. (canceled)5. The method of claim 1 , wherein claim 1 , in step (2) claim 1 , the seed crystals are two-dimensionally connected to each other and three-dimensionally grow perpendicular to the substrate surface by secondary growth from the seed crystal surface claim 1 , to thereby form the film.6. The method of claim 1 , wherein the seed crystals arranged on the substrate in step (1) have all the a- claim 1 , b- and c-axes thereof oriented uniformly on the substrate and form a monolayer.7. The method of claim 1 , wherein the seed crystals are ordered porous materials.8. (canceled)10. The method of claim 9 , wherein the film formed through the secondary growth from the surface of the seed crystals in the region in which orientations of the crystal axes of the adjacent crystal seeds are uniform claim 9 , satisfies the following:channels extend continuously in an axial direction ...

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Номер записи: 31
05-09-2013 дата публикации

Silica composite, method for producing the same, and method for producing propylene using the silica composite

Номер: US20130231515A1
Автор: Kenji Akagishi, Ryusuke Miyazaki
Принадлежит: Asahi Kasei Chemicals Corp

The present invention provides a method for producing a silica composite by the steps of: preparing a raw material mixture containing silica and zeolite; drying the raw material mixture to obtain a dried product; and calcining the dried product, wherein the method comprising the step of allowing the raw material mixture to contain phosphoric acid and/or phosphate or bringing a solution of phosphoric acid and/or phosphate into contact with the zeolite and/or the dried product, or a combination thereof to thereby adjust a phosphorus content in the silica composite to 0.01 to 1.0% by mass based on the total mass of the silica composite.

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Номер записи: 32
19-09-2013 дата публикации

Hydrothermal synthesis of zeolites or zeolite-like materials using modified mixed hydroxides

Номер: US20130245349A1
Автор: Martin Claus, Olivier Larlus, Rainer Albert Rakoczy
Принадлежит: Sued Chemie IP GmbH and Co KG

This invention relates to a process for producing aluminium silicates in the form of zeolite L, as well as the intermediate and end products of this process. The invention further relates to the use of these aluminium silicates for the conversion or adsorption of hydrocarbons.

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Номер записи: 33
31-10-2013 дата публикации

Catalyst for producing monocyclic aromatic hydrocarbon and production method of monocyclic aromatic hydrocarbon

Номер: US20130289325A1
Автор: Masahide Kobayashi, Ryoji Ida, Shinichiro Yanagawa, Yasuyuki Iwasa
Принадлежит: JX Nippon Oil and Energy Corp

The catalyst for producing aromatic hydrocarbon is for producing monocyclic aromatic hydrocarbon having 6 to 8 carbon number from oil feedstock having a 10 volume % distillation temperature of 140° C. or higher and a 90 volume % distillation temperature of 380° C. or lower and contains crystalline aluminosilicate and phosphorus. A molar ratio (P/Al ratio) between phosphorus contained in the crystalline aluminosilicate and aluminum of the crystalline aluminosilicate is from 0.1 to 1.0. The production method of monocyclic aromatic hydrocarbon is a method of bringing oil feedstock having a 10 volume % distillation temperature of 140° C. or higher and a 90 volume % distillation temperature of 380° C. or lower into contact with the catalyst for producing monocyclic aromatic hydrocarbon.

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Номер записи: 34
05-12-2013 дата публикации

Hydrocarbon Conversion Process Using a High Throughpout Process for Manufacturing Molecular Sieves

Номер: US20130324760A1
Автор: Ivy D. Johnson, Wenyih Frank Lai
Принадлежит: ExxonMobil Chemical Patents Inc

A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 Å, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH − ), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr −1 , wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.

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Номер записи: 35
12-12-2013 дата публикации

METHOD FOR THE PREPARATION OF MWW TYPE ZEOLITE

Номер: US20130330273A1
Автор: Ayyamperumal Sakthivel, Jagannath Das, Raksh Vir Jasra, Sreedharan Unnikrishnan
Принадлежит: RELIANCE INDUSTRIES LIMITED

The present invention relates to a method for preparing MWW type zeolite; said method comprising i) intimately mixing together, in the absence of any organic structure directing agent or crystalline MWW type zeolite seeds, a predetermined quantity of a compound containing silicon dioxide, a compound containing metal oxide, water and a pH modifier to obtain an aqueous amorphous metallosilicate gel; and ii) hydrotherinally treating said gel in the presence of an organic tempiating agent to provide a crystalline M W w type zeonte. 1. A method for preparing MWW type zeolite comprising the following steps:(i) intimately mixing together, in the absence of any organic structure directing agent or crystalline MWW type zeolite seeds, a predetermined quantity of a compound containing silicon dioxide, a compound containing metal oxide, water and a pH modifier to obtain an aqueous amorphous metallosilicate gel;wherein said gel comprises at least one silicate selected from the group consisting of a metallosilicate species and double six membered silicate;{'sub': 2', '2, 'wherein the molar ratio of metal oxide to SiOis in the range of about 0.01:1 to about 0.05:1 and the molar ratio of water to SiOis in the range of about 10:1 to about 60:1; and'}(ii) hydrothermally treating said gel in the presence of an organic templating agent to provide a crystalline MWW type zeolite.2. The method as claimed in claim 1 , wherein the hydro thermal treatment of said gel is performed in the presence of an aqueous alkali.3. The method as claimed in claim 1 , wherein the compound containing silicon dioxide is at least one selected from the group consisting of hydrated precipitated silica claim 1 , colloidal silica claim 1 , ammonia-stabilized colloidal silica claim 1 , sodium silicate claim 1 , potassium silicate claim 1 , calcium silicate claim 1 , siloxane and alkoxy silane.4. The method as claimed in claim 1 , wherein the compound containing silicon dioxide is colloidal silica.5. The method as ...

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Номер записи: 36
19-12-2013 дата публикации

Titano-silico-alumino-phosphate

Номер: US20130334460A1
Автор: Arno Tissler, Martin DIENERSBERGER, Olga Manoylova, Silke Sauerbeck
Принадлежит: Clariant Produkte Deutschland GmbH

A titano-silico-aluminophosphate which contains tetrahedrally coordinated titanium in the framework structure, which has a free coordination site for CO which can be detected by means of a characteristic IR band at 2192±5 cm −1 . The titano-silico-aluminophosphate has extremely high hydrothermal stability and has a good adsorption capacity even at higher temperatures. Also, a hydrothermal method to obtain a titano-silico-aluminophosphate starting from a synthetic gel mixture of an aluminium, phosphorus, silicon and a titanium source, as well as corresponding templates.

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Номер записи: 37
26-12-2013 дата публикации

METHOD FOR PRODUCING MTW-TYPE ZEOLITE

Номер: US20130343986A1
Автор: Itabashi Keiji, KAMIMURA Yoshihiro, Okubo Tatsuya
Принадлежит:

Provided is a method for producing an MTW-type zeolite. The reaction mixture contains a silica source, an alumina source, an alkali source, and water is reacted with a seed crystal of a zeolite to produce an MTW-type zeolite. The reaction mixture has a composition, which makes a synthesized zeolite contain an MFI-type zeolite when the zeolite is synthesized solely from the reaction mixture, is used. As the seed crystal, a beta-type zeolite which has a ratio of SiO/AlOof 8 to 50 and does not contain a structure direction agent is used. The seed crystal is added to the reaction mixture, in a proportion of 0.1% by mass to 20% by mass based on a silica component in the reaction mixture. The reaction mixture to which the seed crystal has been added is heated at 100° C. to 200° C. in a sealed state. 1. A method for producing an MTW-type zeolite by reacting a reaction mixture containing a silica source , an alumina source , an alkali source , and water with a seed crystal of a zeolite , comprising:adding the seed crystal to the reaction mixture, in a proportion of 0.1% by mass to 20% by mass based on a silica component in the reaction mixture; andheating the reaction mixture to which the seed crystal has been added, at 100° C. to 200° C. in a sealed state,wherein as the reaction mixture, a reaction mixture having a composition which makes a synthesized zeolite contain an MFI-type zeolite when the zeolite is synthesized solely from the reaction mixture is used, and{'sub': 2', '2', '3, 'as the seed crystal, a beta-type zeolite that has a ratio of SiO/AlOof 8 to 50 and does not contain a structure directing agent is used.'}2. The production method according to claim 1 ,wherein as the reaction mixture, a reaction mixture having a composition represented by the following molar ratio is used.{'sub': 2', '2', '3, 'SiO/AlO=10 to 150'}{'sub': 2', '2, 'NaO/SiO=0.075 to 0.23'}{'sub': 2', '2, 'HO/SiO=5 to 50'}3. The production method according to claim 2 ,wherein as the reaction ...

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Номер записи: 38
02-01-2014 дата публикации

Metallophosphate molecular sieves, methods of preparation and use

Номер: US20140004024A1
Автор: Gregory J. Lewis, Justin E. Stanczyk, Lisa M. Knight, Paulina Jakubczak
Принадлежит: UOP LLC

A new family of crystalline microporous metallophosphates designated AlPO-57 has been synthesized. These metallophosphates are represented by the empirical formula R + r M m n+ EP x Si y O z where R is an organoammonium cation such as the DEDMA + , M is a divalent framework metal such as an alkaline earth or transition metal, and E is a framework element such as aluminum or gallium. The microporous AlPO-57 compositions are characterized by a new unique ABC-6 net structure and have catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for separating at least one component.

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Номер записи: 39
02-01-2014 дата публикации

Catalyst containing a modified y-type zeolite and a preparaton process thereof

Номер: US20140005032A1
Автор: Beiyan Chen, Fei REN, Huiping Tian, Jiasong Yan, Jun Long, Li Zhuang, Minggang Li, Xiangtian Shu, XUE Yang, Yibin Luo, Ying Ouyang, Yuxia Zhu
Принадлежит: China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Processing

The present invention discloses a catalytic cracking catalyst and a preparation process therefor. The catalytic cracking catalyst comprises a cracking active component, 10 wt %-70 wt % of a clay on the dry basis, and 10 wt %-40 wt % of an inorganic oxide binder (as oxide), relative to the weight of the catalytic cracking catalyst, wherein said cracking active component contains, relative to the weight of the catalytic cracking catalyst, 10 wt %-50 wt % of a modified Y-type zeolite on the dry basis and 0-40 wt % of other zeolite on the dry basis, wherein said modified Y-type zeolite is characterized by having a unit cell size of 2.420-2.440 nm; as percent by weight of the modified Y-type zeolite, a phosphorus content of 0.05-6%, a RE 2 O 3 content of 0.03-10%, and an alumina content of less than 22%; and a specific hydroxy nest concentration of less than 0.35 mmol/g and more than 0.05 mmol/g.

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Номер записи: 40
20-02-2014 дата публикации

METHODS OF CONTROLLING POLYMORPHISM IN ORGANIC-FREE SYNTHESIS OF NA-ZEOLITES AND ZEOLITE CRYSTALS FORMED THEREFROM

Номер: US20140050659A1
Автор: MALDONADO Miguel, OLEKSIAK Matthew D., RIMER Jeffrey D.
Принадлежит: UNIVERSITY OF HOUSTON SYSTEM

Methods of controlling crystal polymorphism in organic-free synthesis of Na-Zeolites and the zeolite crystals formed using those methods are provided. The methods disclosed herein create certain types of zeolite crystals more efficiently than other previously known methods. The methods also create certain types of zeolite crystals in a form and concentration not previously disclosed. The methods disclosed herein generally comprise using solutions with varying ratios of silicon (Si), aluminum (Al), hydroxide (OH), and water. Some implementations of the invention disclosed include efficient methods of producing nearly pure cancrinite (CAN), methods of obtaining sodalite in solutions with a high Si/Al ratio, and a method of forming thin, platelet-like ANA crystals with a width of less than about 1 μm and a length of at least about 3 μm. 1. A method for forming cancrinite crystals , comprising: a Si/OH ratio of less than about 1; and', 'a Si/Al ratio of at least about 0.5 to 1., 'creating a solution comprising2. The method of wherein the Si/Al ratio is between about 0.5 to 1 and about 20 to 1.3. The method of claim 1 , wherein the creating a solution comprises mixing a hydroxide source claim 1 , a solvent claim 1 , and a framework source precursor selected from an alumina source claim 1 , a silica source claim 1 , and combinations thereof.4. The method of claim 3 , wherein the silica source is selected from the group consisting of colloidal silica claim 3 , fumed silica claim 3 , silica salts claim 3 , metallic silicates claim 3 , hydrates thereof claim 3 , derivatives thereof claim 3 , and combinations thereof.5. The method of claim 3 , wherein the framework source precursor is selected from the group consisting of: silica source claim 3 , alumina source claim 3 , silicoaluminate source claim 3 , silicoaluminophosphate source claim 3 , derivatives thereof claim 3 , and combinations thereof.6. A method for forming sodalite crystals claim 3 , comprising: [{'sub': '2', 'a ...

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Номер записи: 41
27-02-2014 дата публикации

Pharmaceutical compound which includes clinoptilolite

Номер: US20140056804A1
Автор: Kevin Gast
Принадлежит: Individual

This invention is for a compound for treating a human or animal body to relieve the symptoms of any one of chemical-, substance-, and medicine induced gastrointestinal tract irritation, the compound including clinoptilolite. The invention is also for a compound for treating a human or animal body to lower the incidences of gastic events in persons using non-steroidal, anti-inflammatory medications, the compound including clinoptilolite.

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Номер записи: 42
27-02-2014 дата публикации

METHOD FOR PREPARATION OF MESOPOROUS ZEOLITES

Номер: US20140056805A1
Автор: Chang Ho Sik, Ha Kyoung Su, Jun Ki Won, Kim Jeong Rang, Lee Jin Suk, Lee Yun Jo, Park Jo Yong, Yoo Yeon Shick
Принадлежит:

The provided is a preparation method of a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. 1. A method for preparing a mesoporous zeolite comprising:1) forming a synthetic zeolite gel by mixing a silica precursor, an aluminum precursor and water and aging the resulted mixture;2) carrying out zeolite synthesis by subjecting the synthetic zeolite gel to a hydrothermal reaction;3) cooling the synthesized zeolite from the above step 2), then adding a basic solution thereto and allowing them to react, thereby obtaining a mesoporous zeolite slurry; and4) washing the mesoporous zeolite slurry with water, drying and firing it, thereby obtaining a mesoporous zeolite.2. The method according to claim 1 , further comprising a step of adjusting pH to 11.0-12.0 by adding an acid claim 1 , after mixing the silica precursor claim 1 , the aluminum precursor and water claim 1 , and before aging the mixture in the above step 1).3. The method according to claim 1 , further comprising adding and mixing a sodium precursor and a zeolite seed in the above step 1).4. The method according to claim 1 , wherein the silica precursor is at least one selected from the group consisting of tetraethylorthosilicate claim 1 , silica sol claim 1 , silica gel claim 1 , sodium silicate and fumed silica claim 1 , and the aluminum precursor is at least one selected from the group consisting of aluminum alkoxide claim 1 , sodium aluminate claim 1 , aluminum sulfate claim 1 , aluminum chloride claim 1 , boehmite and aluminum hydroxide.5. The method according to claim 3 , wherein the sodium precursor is at least one selected from the group consisting of sodium hydroxide claim 3 , sodium carbonate claim 3 , sodium bicarbonate and sodium sulfate.6. The method according to claim 1 , wherein the molar ratio of the silicon precursor to the aluminum precursor (Si/Al) is 20-60.7. The ...

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Номер записи: 43
13-03-2014 дата публикации

Method for Transforming Nitrogen-Containing Compounds

Номер: US20140072508A1
Автор: Arno Tissler, Frank Klose, Grigory Reznikov, Silke Sauerbeck
Принадлежит: Clariant Produkte Deutschland GmbH

The invention relates to a method for the selective catalytic transformation of nitrogen-containing compounds. The transformation relates to the selective catalytic reduction (SCR) of nitrogen oxides, or the selective catalytic oxidation (SCO) of nitrogen hydrides and nitrogen-containing organic compounds, preferably in waste gas flows of combustion processes with motors and without motors and industrial applications. The catalytic converter comprises a titano-(silico)-alumo-phosphate.

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Номер записи: 44
06-01-2022 дата публикации

Aluminophosphate molecular sieve SCM-18, its preparation and application thereof

Номер: US20220001365A1
Автор: FU Wenhua, LIU Songlin, TENG Jiawei, YANG Weimin, YUAN Zhiqing
Принадлежит:

An aluminophosphate molecular sieve SCM-18 has a schematic chemical composition, expressed on a molar basis, of AlO.n PO, in which wherein n represents a phosphorus to aluminum molar ratio, and is in a range of about 0.8-1.2. The aluminophosphate molecular sieve has a unique X-ray diffraction pattern, and can be used as an adsorbent, a catalyst or a catalyst carrier. 4. The aluminophosphate molecular sieve according to claim 1 , wherein the molecular sieve has a specific surface area of about 150-500 m/g claim 1 , preferably of about 200-400 m/g; and a micropore volume of about 0.9-0.25 ml/g claim 1 , preferably about 0.10-0.20 ml/g.8. The method according to claim 7 , wherein in step ia) the aluminum source claim 7 , the phosphorus source claim 7 , the organic material R and water are mixed at a molar ratio of the aluminum source (calculated as AlO):the phosphorus source (calculated as PO):R:HO of about 1:(1.0-2.0):(2.5-4.8):(100-300).9. The method according to claim 7 , wherein the organic material R is 1 claim 7 ,1-[1 claim 7 ,4-phenylenebis(methylene)]bis-1-methylpyrrolidinium dihydroxide.10. The method according to a claim 7 , wherein step ib) is carried out under the following conditions:a sealed reaction vessel, a crystallization temperature of about 130-200° C., preferably about 145-185° C., and a crystallization time of about 24-150 hours, preferably about 48-120 hours; andpreferably, the step ib) further comprises washing and drying the resulting aluminophosphate molecular sieve precursor.11. The method according to claim 7 , wherein the aluminum source is one or more selected from the group consisting of pseudo-boehmite claim 7 , aluminum isopropoxide claim 7 , aluminum sol claim 7 , aluminum hydroxide claim 7 , aluminum sulfate claim 7 , aluminum chloride and aluminum oxide claim 7 , preferably selected from the group consisting of pseudo-boehmite and aluminum isopropoxide; and/or the phosphorus source is one or more selected from the group consisting of ...

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Номер записи: 45
06-01-2022 дата публикации

Silicoaluminophosphate molecular sieve, its preparation and application thereof

Номер: US20220001366A1
Автор: FU Wenhua, LIU Songlin, TENG Jiawei, YANG Weimin, YUAN Zhiqing
Принадлежит:

A novel silicoaluminophosphate molecular sieve has a schematic chemical composition, expressed on a molar basis, of mSiO.AlO.nPO, in which m represents the molar ratio of SiOto AlOand is in a range of about 0.005-0.15, and n represents the molar ratio of POto AlOand is in a range of about 0.7-1.1. The silicoaluminophosphate molecular sieve has a unique X-ray diffraction pattern, and can be used as an adsorbent, a catalyst or a catalyst carrier. 4. The silicoaluminophosphate molecular sieve according to claim 1 , wherein:the molecular sieve has a silica to alumina ratio, i.e. m, in a range of about 0.01 to about 0.10; and/orthe molecular sieve has a phosphorus pentoxide to alumina ratio, i.e. n, in a range of about 0.8 to about 1.0.8. The method according to claim 7 , wherein in step ia) the silicon source claim 7 , the aluminum source claim 7 , the phosphorus source claim 7 , the organic material R and water are mixed at a molar ratio of the silicon source (calculated as SiO):the aluminum source (calculated as AlO):the phosphorus source (calculated as PO):R:HO of about (0.01-0.2):1:(1.0-2.0):(3.6-4.8):(100-300).9. The method according to claim 7 , wherein the organic material R is 1 claim 7 ,1-[1 claim 7 ,4-phenylenebis(methylene)]bis-1-methylpyrrolidinium dihydroxide.10. The method according to claim 7 , wherein the step ib) is carried out under the following conditions:a sealed reaction vessel, a crystallization temperature of about 140-200° C., preferably about 150-190° C., and a crystallization time of about 48-160 hours, preferably about 60-120 hours;preferably, the step ib) further comprises washing and drying the resulting silicoaluminophosphate molecular sieve precursor.11. The method according to claim 5 , wherein the aluminum source is one or more selected from the group consisting of pseudo-boehmite claim 5 , aluminum isopropoxide claim 5 , aluminum sol claim 5 , aluminum hydroxide claim 5 , aluminum sulfate claim 5 , aluminum chloride and aluminum oxide ...

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Номер записи: 46
07-01-2021 дата публикации

Method of preparing co2-selective membranes by controlling calcination process including rapid thermal processing and membranes produced thereby

Номер: US20210001285A1
Автор: Jungkyu Choi, Kwan Young Lee, Sung-Won HONG
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Disclosed are a method of preparing carbon-dioxide-selective separation membranes by controlling calcination conditions including rapid thermal processing and separation membranes produced thereby. More particularly, disclosed are a method of preparing carbon-dioxide-selective separation membranes that can improve CO2 permselectivity, particularly, exhibit excellent CO2 permselectivity in the presence of water in the feed gas, by controlling the size of defects in the separation membranes using rapid thermal processing, separation membranes produced thereby, and a method of capturing and removing carbon dioxide using the separation membranes.

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Номер записи: 47
07-01-2021 дата публикации

Method for Producing Silicoaluminophosphate Sorbent

Номер: US20210001308A1
Автор: Hedin Niklas, Jasso-Salcedo Alma, VASILIEV Petr
Принадлежит:

The invention relates to a method for synthesizing silicoaluminophosphate sorbents such as SAPO-56 and SAPO-47 comprising the use of a specific structure directing agent (SDA) comprising a mixture of different types of amines The structure providing agent (SDA) comprises N,N,N′,N′-tetramethyl-1,6-hexanediamine (TMHD) and a co-structure providing agent (co-SDA) selected among primary, secondary and tertiary amines comprising up to 15 carbon atoms and mixtures thereof. A preferred SDA comprises isopropylamine, dibutylamine and tripropylamine The sorbents are particularly suitable for up-grading biogas such as separating carbon dioxide from methane. 1. A method for preparing a silicoaluminophosphate sorbent comprising:providing a reaction mixture, said mixture comprising: a silicon-containing composition, an aluminum-containing composition, a phosphorous-containing composition, and a structure directing agent (SDA);crystallization of the reaction mixture thereby providing crystallized silicoalum inophosphate;recovering crystalline silicoaluminophosphate from the mixture;wherein the structure providing agent (SDA) comprises N,N,N′,N′-tetramethyl-1,6-hexanediamine (TMHD) and a co-structure providing agent (co-SDA) selected among primary, secondary and tertiary amines comprising up to 15 carbon atoms and mixtures thereof.2. The method according to claim 1 , wherein the co-SDA is selected among primary amines comprising a saturated hydrocarbon comprising up to 6 carbon atoms.3. The method according to claim 1 , wherein the silicoaluminophosphate sorbent is selected among SAPO-47 and SAPO-56.4. The method according to claim 1 , wherein the silicoaluminophosphate sorbent is SAPO-56.5. The method according to claim 1 , wherein the SDA comprises up to about 75% wt of the co-SDA.6. The method according to claim 1 , wherein the primary claim 1 , secondary and tertiary amines comprise saturated hydrocarbons.7. The method according to claim 6 , wherein the saturated hydrocarbons ...

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Номер записи: 48
07-01-2021 дата публикации

METHOD OF SYNTHESIS OF NANO-SIZED BETA ZEOLITES CONTAINING MESOPORES AND USES THEREOF

Номер: US20210001313A1
Автор: Ding Lianhui, Eid Manal, Shaik Kareemuddin
Принадлежит: Saudi Arabian Oil Company

A method for hydrocracking a hydrocarbon feedstock, the method comprising: contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction conditions to produce a product stream containing at least 20 weight percent of hydrocarbons with 1-4 carbon atoms, wherein the nano-sized mesoporous zeolite composition is produced by a method that includes: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel; drying the aluminosilicate fluid gel to form a dried gel mixture; subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor; adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture; subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite; washing the CTAB-templated zeolite with distilled water; separating the CTAB-templated zeolite by centrifugation; and drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition. 1. A method for hydrocracking a hydrocarbon feedstock , the method comprising: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel;', 'drying the aluminosilicate fluid gel to form a dried gel mixture;', 'subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor;', 'adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture;', 'subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite;', 'washing the CTAB-templated zeolite with distilled water;', 'separating the CTAB-templated zeolite by centrifugation; and', 'drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition., 'contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction ...

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Номер записи: 49
07-01-2016 дата публикации

ZEOLITE, METHOD FOR MANUFACTURING ZEOLITE, HONEYCOMB CATALYST, AND EXHAUST GAS PURIFYIG APPARATUS

Номер: US20160001274A1
Автор: MURAKAMI Takunari, USUI Toyohiro
Принадлежит: IBIDEN CO., LTD.

A zeolite has a CHA structure, a SiO/AlOcomposition ratio less than about 15, and an average particle size from about 0.1 μm to about 0.5 μm. 1. A zeolite comprising:a CHA structure;{'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}an average particle size from about 0.1 μm to about 0.5 μm.2. The zeolite according to claim 1 ,wherein the zeolite has a ratio of a total integrated intensity of a (211) plane, a (104) plane, and a (220) plane in an X-ray diffraction spectrum obtained by a powder X-ray diffraction method of about 3.1 or more relative to a total integrated intensity of a (111) plane and a (200) plane in an X-ray diffraction spectrum of lithium fluoride.3. The zeolite according to claim 1 ,wherein Cu in an amount of about 3.5% by mass to about 6.0% by mass of the zeolite is supported on the zeolite.4. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}, 'an average particle size from about 0.1 μm to about 0.5 μm, a compound of the Al source having a solubility of about 1.0 g or less in 100 g of a 1 mol/L aqueous potassium hydroxide solution., 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprising5. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than about 15; and'}, 'an average particle size from about 0.1 μm to about 0.5 μm, a ratio of a mole number of water to a total mole number of Si in the Si source and Al in the Al source more than or equal to about 15., 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprising6. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', ...

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Номер записи: 50
07-01-2016 дата публикации

ZEOLITE, METHOD FOR MANUFACTURING ZEOLITE, HONEYCOMB CATALYST, AND EXHAUST GAS PURIFYIG APPARATUS

Номер: US20160001277A1
Автор: IGARASHI Hirokazu, MURAKAMI Takunari, USUI Toyohiro
Принадлежит: IBIDEN CO., LTD.

A zeolite has a CHA structure, a SiO/AlOcomposition ratio less than 15, and potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO. 1. A zeolite comprising:a CHA structure;{'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}{'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO.'}2. The zeolite according to claim 1 ,wherein the zeolite has an average particle size of about 0.1 μm to about 0.5 μm.3. The zeolite according to claim 1 ,wherein the zeolite has a ratio of a total integrated intensity of a (211) plane, a (104) plane, and a (220) plane in an X-ray diffraction spectrum obtained by a powder X-ray diffraction method of about 3.1 or more relative to a total integrated intensity of a (111) plane and a (200) plane in an X-ray diffraction spectrum of lithium fluoride.4. The zeolite according to claim 1 ,wherein Cu in an amount of about 3.5% by mass to about 6.0% by mass of the zeolite is supported on the zeolite.5. A method for manufacturing a zeolite claim 1 , the method comprising: a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}, {'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO; and'}], 'reacting a raw material composition containing a Si source, an Al source, an alkali source, water, and a structure directing agent to synthesize the zeolite comprisingcontrolling an amount of the potassium in the zeolite synthesized in the reacting the raw material composition using at least one of ammonium sulfate, ammonium nitrate, and ammonium chloride.6. A honeycomb catalyst comprising: an inorganic binder; and', a CHA structure;', {'sub': 2', '2', '3, 'a SiO/AlOcomposition ratio less than 15; and'}, {'sub': '2', 'potassium in an amount of about 0.1% by mass to about 1% by mass in terms of KO.'}], 'a zeolite comprising], 'a honeycomb unit having partition walls extending along a longitudinal direction of the ...

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Номер записи: 51
04-01-2018 дата публикации

DDR-TYPE ZEOLITE SEED CRYSTAL AND METHOD FOR MANUFACTURING DDR-TYPE ZEOLITE MEMBRANE

Номер: US20180001276A1
Автор: Hagio Takeshi, Ichikawa Akimasa, Kinoshita Naoto, Shibata Hiroyuki
Принадлежит: NGK Insulators, Ltd.

A DDR-type zeolite seed crystal has an average particle diameter of less than or equal to 0.2 μm, and an average aspect ratio of less than or equal to 1.3. 1. A DDR-type zeolite seed crystal having an average particle diameter of less than or equal to 0.2 μm , and an average aspect ratio of less than or equal to 1.3.2. The DDR-type zeolite seed crystal according to claim 1 , wherein a crystallinity index is greater than or equal to 60.3. A method for manufacturing a DDR-type zeolite membrane comprising the steps of:coating a slurry containing DDR-type zeolite seed crystals onto a surface of a support, the DDR-type zeolite seed crystals having an average particle diameter of less than or equal to 0.2 μm and an average aspect ratio of less than or equal to 1.3, andcausing crystal growth of the DDR-type zeolite seed crystals.4. The method for manufacturing a DDR-type zeolite membrane according to claim 3 , comprising the step of forming the DDR-type zeolite seed crystal by heating a starting material solution containing a nucleus that includes DDR-type zeolite seed crystal for greater than or equal to 24 hours.5. The method for manufacturing a DDR-type zeolite membrane according to claim 4 , wherein a concentration of the nucleus in the starting material solution is greater than or equal to 0.5 mass %.6. The method for manufacturing a DDR-type zeolite membrane according to claim 4 , wherein the starting material solution is heated to greater than or equal to 110 degrees C. and less than or equal to 150 degrees C.7. The method for manufacturing a DDR-type zeolite membrane according to claim 5 , wherein the starting material solution is heated to greater than or equal to 110 degrees C. and less than or equal to 150 degrees C. The present invention relates to a DDR-type zeolite seed crystal and to a method for manufacturing a DDR-type zeolite membrane.A method is known of forming a DDR-type zeolite membrane on a surface of a support by use of a DDR-type zeolite seed ...

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Номер записи: 52
02-01-2020 дата публикации

ZEOLITE MEMBRANE COMPOSITE AND PROCESS FOR PRODUCING ZEOLITE MEMBRANE COMPOSITE

Номер: US20200001250A1
Автор: Miyahara Makoto, NODA Kenichi
Принадлежит: NGK Insulators, Ltd.

A process for producing a zeolite membrane composite includes a step of obtaining FAU-type seed crystals, a step of depositing the FAU-type seed crystals on a support, a step of forming an AFX-type zeolite membrane on the support by immersing the support in a raw material solution and growing an AFX-type zeolite from the FAU-type seed crystals by hydrothermal synthesis, and a step of removing a structure-directing agent from the AFX-type zeolite membrane. In this way, the AFX-type zeolite membrane can be provided. 1. A zeolite membrane composite comprising:a support; andan AFX type zeolite membrane formed on the support.2. The zeolite membrane composite according to claim 1 , whereinthe AFX type zeolite membrane is a zeolite membrane made of aluminosilicate zeolite.3. The zeolite membrane composite according to claim 1 , whereinthe AFX type zeolite membrane is in direct contact with the support.4. The zeolite membrane composite according to claim 1 , further comprising:an FAU type zeolite membrane located between the support and the AFX type zeolite membrane.5. The zeolite membrane composite according to claim 4 , whereinthe FAU type zeolite membrane is a Y- or X-type zeolite membrane.6. The zeolite membrane composite according to claim 1 , whereinthe support is porous.7. The zeolite membrane composite according to claim 1 , whereinthe support is a sintered alumina compact, a sintered mullite compact, or a sintered titania compact.8. A process for producing a zeolite membrane composite claim 1 , comprising:a) obtaining an FAU type seed crystal;b) depositing the FAU type seed crystal on a support;c) forming an AFX type zeolite membrane on the support by immersing the support in a raw material solution and growing an AFX type zeolite from the FAU type seed crystal by hydrothermal synthesis; andd) removing a structure-directing agent from the AFX type zeolite membrane.9. The process for producing a zeolite membrane composite according to claim 8 , further comprising: ...

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Номер записи: 53
03-01-2019 дата публикации

MOLECULAR SIEVE SSZ-95, METHOD OF MAKING, AND USE

Номер: US20190001312A1
Автор: Lei Guan-Dao, Ojo Adeola Florence, Zhang Yihua, Zones Stacey Ian
Принадлежит: Chevron U.S.A. INC.

A new crystalline molecular sieve designated SSZ-95 is disclosed. In general, SSZ-95 is synthesized from a reaction mixture suitable for synthesizing MTT-type molecular sieves and maintaining the mixture under crystallization conditions sufficient to form product. The product molecular sieve is subjected to a pre-calcination step, and ion-exchange to remove extra-framework cations, and a post-calcination step. The molecular sieve has a MTT-type framework and a H-D exchangeable acid site density of 0 to 50% relative to molecular sieve SSZ-32. 1. A molecular sieve having a MTT-type framework , a mole ratio of 20 to 70 of silicon oxide to aluminum oxide , a total micropore volume of between 0.005 and 0.02 cc/g; and a H-D exchangeable acid site density of up to 50% relative to SSZ-32.2. The molecular sieve of claim 1 , wherein the molecular sieve has a mole ratio of 20 to 50 of silicon oxide to aluminum oxide.3. The molecular sieve of claim 1 , wherein the molecular sieve has a total micropore volume of between 0.008 and 0.018 cc/g.4. The molecular sieve of claim 1 , wherein the molecular sieve has an external surface area of between 200 and 250 m/g; and a BET surface area of between 240 and 280 m/g.5. The molecular sieve of claim 1 , wherein the molecular sieve has a H-D exchangeable acid site density of 0.5 to 30% relative to molecular sieve SSZ-32.6. The molecular sieve of claim 5 , wherein the molecular sieve has a total micropore volume of between 0.008 and 0.018 cc/g.7. The molecular sieve of claim 5 , wherein the molecular sieve has an external surface area of between 200 and 250 m/g; and a BET surface area of between 240 and 280 m/g.8. The molecular sieve of claim 1 , wherein the molecular sieve has a H-D exchangeable acid site density of 2 to 25% relative to molecular sieve SSZ-32.9. The molecular sieve of claim 8 , wherein the molecular sieve has a total micropore volume of between 0.008 and 0.018 cc/g.10. The molecular sieve of claim 8 , wherein the molecular ...

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Номер записи: 54
03-01-2019 дата публикации

BI-METAL MOLECULAR SIEVE CATALYSTS

Номер: US20190001313A1
Автор: Chen Hai-Ying, FEDEYKO JOSEPH MICHAEL, RIVAS-CARDONA Alejandra
Принадлежит:

Provided is a catalyst composition comprising a small pore molecular sieve, about 0.5-5 weight percent of a transition metal (T) selected from copper and/or iron, based on the total weight of the zeolite, and about 0.5-5 weight percent nickel, based on the total weight of the molecular sieve, wherein the transition metal and nickel are present in a T:Ni ratio of about 10:1 to about 1:2. Also provided is a synthesis method for preparing a small pore molecular sieve having both Cu and Ni incorporated in situ. Also provided is a method for using such a catalyst for selectively reducing NOx in an exhaust gas. 1. A catalyst composition comprising a small pore molecular sieve , about 0.5-5 weight percent of a transition metal (T) selected from copper and/or iron , based on the total weight of the molecular sieve , and about 0.5-5 weight percent nickel , based on the total weight of the molecular sieve , wherein the transition metal and nickel are present in a T:Ni ratio of about 10:1 to about 1:2.2. The catalyst composition of claim 1 , wherein the transition metal and the nickel are incorporated into the molecular sieve during synthesis.3. The catalyst composition of claim 1 , wherein a majority of the transition metal and the nickel are present as extra-framework metals.4. The catalyst composition of claim 1 , wherein the molecular sieve is composed of crystals claim 1 , and the transition metal and the nickel are present in a weight percentage as measured by XPS that is within 10% of their weight percentage as measured by XRF5. The catalyst composition of claim 1 , wherein the molecular sieve has a CHA framework.6. The catalyst composition of claim 1 , wherein the molecular sieve has an AEI framework.7. The catalyst composition of claim 1 , wherein the molecular sieve is a zeolite having a silica-to-alumina ratio of about 10 to about 50.8. The catalyst composition of claim 1 , wherein the molecular sieve is essentially free of non-aluminum framework metals.9. The ...

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Номер записи: 55
07-01-2021 дата публикации

MWW TYPE ZEOLITE, METHOD FOR PRODUCING SAME, AND CRACKING CATALYST

Номер: US20210002140A1
Автор: ENDOU Akira, INAGAKI Satoshi, KAMIMURA Yoshihiro, KATADA Naonobu, KUBOTA Yoshihiro, SUGANUMA Satoshi, Yamazaki Yasuo
Принадлежит:

Provided are the following: an MWW type zeolite which has many Brønsted acid sites when in the form of a proton type and which is highly suitable as a cracking catalyst for cumene; a method for producing same; and an application of same. The present invention provides an MWW type zeolite in which the ratio (B/A) of the peak intensity (B) attributable to tetracoordinate aluminum relative to the peak intensity (A) attributable to hexacoordinate aluminum is 2 or more in Al MAS NMR, when measured as an ammonium type. The present invention also provides a method for producing an MWW type zeolite, the method having a step for carrying out a hydrothermal synthesis reaction in the presence of: a seed crystal of an MWW type zeolite containing no organic structure-directing agent; and a reaction mixture containing a silica source, an alumina source, an alkali source, an organic structure-directing agent, and water. The reaction mixture satisfies the following molar ratio: X/SiO<0.15 (here, X denotes the number of moles of the organic structure-directing agent). 1. An MWW-type zeolite wherein a ratio (B/A) of a peak intensity (B) attributable to tetracoordinate aluminum to a peak intensity (A) attributable to hexacoordinate aluminum is 2 or more in Al MAS NMR as measured in the form of an ammonium type.2. The MWW-type zeolite according to claim 1 , wherein an amount of Brønsted acid site with a adsorption heat of ammonia of 106 kJ/mol or more is 0.5 mmol/g or more.3. The MWW-type zeolite according to claim 1 , wherein a micropore volume is 0.07 cm/g or more and 0.2530 cm/g or less.4. The MWW-type zeolite according to claim 1 , wherein SiO/AlOmolar ratio is 17 or more and 37 or less.5. The MWW-type zeolite according to claim 1 , wherein when the MWW-type zeolite is subjected to X-ray diffraction measurement claim 1 , a peak is observed in at least one range below:2θ=6.4° to 7.4°, 13.5° to 14.5°, 24.1° to 25.1°, 24.7 to 25.7°, 27.1 to 28.1°, 28.0° to 29.0°, 28.6° to 29.6°, and ...

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Номер записи: 56
07-01-2016 дата публикации

PROCESS FOR PREPARING A BORON CONTAINING ZEOLITIC MATERIAL HAVING MWW FRAMEWORK STRUCTURE

Номер: US20160002058A1
Автор: Bayer Robert, Czajka Pawel, Luetzel Hans-Juergen, Mueller Ulrich, Parvulescu Andrei-Nicolae, RUSLIM Franky, SCHLOSSER Robert, Uhl Georg, VOGELSANG Regina
Принадлежит: BASF SE

A process for preparing an aluminum-free boron containing zeolitic material comprising the framework structure MWW (BMWW), comprising (a) hydrothermally synthesizing the BMWW from a synthesis mixture containing water, a silicon source, a boron source, and an MWW template compound obtaining the BMWW in its mother liquor, the mother liquor having a pH above 9; (b) adjusting the pH of the mother liquor, obtained in (a) and containing the BMWW, to a value in the range of from 6 to 9; (c) separating the BMWW from the pH-adjusted mother liquor obtained in (b) by filtration in a filtration device. 1: A process for preparing an aluminum-free boron comprising zeolitic material comprising a framework structure MWW (BMWW) , the process comprising(a) hydrothermally synthesizing a BMWW precursor from a synthesis mixture comprising water, a silicon source, a boron source, and an MWW template compound obtaining the BMWW precursor in a mother liquor, the mother liquor having a pH above 9;(b) adjusting the pH of the mother liquor, obtained in (a) and comprising the BMWW precursor, to a value in a range of from 6 to 9 to obtain a pH-adjusted mother liquor;(c) separating the BMWW precursor from the pH-adjusted mother liquor obtained in (b) by filtration in a filtration device.2: The process of claim 1 , wherein in (a) claim 1 , at least 95 weight-% of the synthesis mixture consist of water claim 1 , the silicon source claim 1 , the boron source claim 1 , and the template compound.3: The process of claim 1 , wherein in (a) claim 1 , the silicon source is selected from the group consisting of fumed silica claim 1 , colloidal silica claim 1 , and a mixture thereof claim 1 , the boron source is selected from the group consisting of boric acid claim 1 , a borate claim 1 , boron oxide claim 1 , and a mixture of two or more thereof claim 1 , and the MWW template compound is selected from the group consisting of piperidine claim 1 , hexamethylene imine claim 1 , N claim 1 ,N claim 1 ,N claim ...

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Номер записи: 57
07-01-2016 дата публикации

Molecular sieve ssz-98

Номер: US20160002059A1
Автор: Christopher Michael LEW, Dan XIE, Stacey Ian Zones, Tracy Margaret Davis
Принадлежит: Chevron USA Inc

A new crystalline molecular sieve designated SSZ-98 is disclosed. SSZ-98 has the ERI framework type and is synthesized using a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent.

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Номер записи: 58
07-01-2016 дата публикации

METHOD FOR MAKING MOLECULAR SIEVE SSZ-98

Номер: US20160002060A1
Автор: Davis Tracy Margaret, Lew Christopher Michael, Xie Dan, Zones Stacey Ian
Принадлежит: Chevron U.S.A. INC.

A method is disclosed for making a new crystalline molecular sieve designated SSZ-98. SSZ-98 has the ERI framework type and is synthesized using a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent. 1. A method for preparing an ERI framework type molecular sieve , comprising:(a) preparing a reaction mixture containing: (1) at least one source of silicon oxide; (2) at least one source of aluminum oxide; (3) one or more sources of one or more elements selected from Groups 1 and 2 of the Periodic Table; (4) hydroxide ions; (5) a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication; (6) optionally, 18-crown-6; and (7) water; and(b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve.4. The method of claim 2 , wherein M is potassium.5. The method of claim 2 , wherein M is a combination of potassium and strontium.6. The method of claim 2 , wherein the reaction mixture further comprises seed crystals having a framework type of ERI claim 2 , KFI claim 2 , or a combination thereof.7. The method of claim 6 , wherein the seed crystals are present in an amount such that the mole ratio of seed crystals/SiOin the reaction mixture is from 0.001 to 0.1.8. The method of claim 1 , wherein the molecular sieve has less than 2.5% OFF framework type character as determined by X-ray diffraction. This disclosure relates to new crystalline molecular sieve designated SSZ-98, a method for preparing SSZ-98 using a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent (“SDA”), and uses for SSZ-98. These materials have the ERI framework type. The method enables control over silica-to-alumina ratio, crystal size, and morphology of these materials.Molecular sieves are a commercially important class of crystalline materials. They have distinct crystal structures with ordered pore structures which are demonstrated by distinct X-ray diffraction patterns. The crystal structure ...

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Номер записи: 59
07-01-2016 дата публикации

ZSM-5 TYPE MOLECULAR SIEVE SYNTHESIS METHOD

Номер: US20160002061A1
Автор: Bao Xiaojun, He Shengbao, Li Tiesen, Liu Haiyan, Yu Jianning, Yue Yuanyuan
Принадлежит:

The present invention pertains to the field of molecular sieve synthesis, and relates to a synthesis method of ZSM-5 type molecular sieves. In this method, natural minerals, i.e., natural kaolin and natural diatomite, are used as the total silicon source and aluminum source required for the molecular sieve synthesis, and these two natural minerals are calcinated and subjected to acidic (alkaline) treatment before they are mixed at a certain ratio, and then crystallized under hydrothermal conditions to obtain the product, a ZSM-5 type molecular sieve. The ZSM-5 type molecular sieve obtained by the method according to the present invention is a hierarchical porous material having a crystallinity of 70% to 120% as compared to conventional ZSM-5 type molecular sieves synthesized by using pure chemical reagents, and the silica-to-alumina ratio in the molecular sieve product may be adjusted by varying the ratio of the two minerals in the raw materials for the synthesis. According to the present invention, the range of raw materials for the preparation of molecular sieve materials is broadened, and therefore not only the cost for the molecular sieve production is greatly reduced but also the greenness in the production process of the molecular sieve material is significantly improved. 1. The A synthesis method of ZSM-5 type molecular sieves , characterized in that , natural minerals are used as the total silicon source and aluminum source needed for the molecular sieve synthesis , and hydrothermally crystallized to produce the ZSM-5 type molecular sieves , wherein said natural minerals are a mixture of natural minerals having a low silica-to-alumina ratio together with natural minerals having a high silica-to-alumina ratio or with pure silicon.2. The synthesis method of ZSM-5 type molecular sieves according to claim 1 , wherein the natural minerals having a low silica-to-alumina ratio are natural minerals having a silica-to-alumina molar ratio of 10 or less claim 1 , and ...

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Номер записи: 60
05-01-2017 дата публикации

CIT-10: A TWO DIMENSIONAL LAYERED CRYSTALLINE MICROPOROUS SILICATE COMPOSITION AND COMPOSITIONS DERIVED THEREFROM

Номер: US20170001872A1
Автор: Davis Mark E., SCHMIDT JOEL E.
Принадлежит:

This disclosure relates to a new crystalline microporous silicate solid, designated CIT-10, comprising a two dimensional layered structure, having an organic interlayer sandwiched between individual crystalline silicate layers. This CIT-10 material can be converted to a pure-silicate of RTH topology, as well as two new of pillared silicate structures, designated CIT-11 and CIT-12. This disclosure characterizes new materials and provides methods of preparing and using these new crystalline microporous solids. 1. A crystalline microporous silicate , designated CIT-10 , which exhibits a powder X-ray diffraction (XRD) pattern exhibiting at least five of the characteristic peaks at 7.6±0.2° , 8.7±0.2° , 10.3±0.2° , 18.8±0.2° , 20.3±0.2° , 21.8±0.2° , 22.4±0.2° , 22.7±0.2° , 22.9±0.2° , and 23.6±0.2° 2-theta.2. The crystalline microporous silicate of claim 1 , wherein the crystalline microporous silicate comprises a two dimensional layered structure claim 1 , having an organic material sandwiched between individual crystalline silicate layers.3. The crystalline microporous silicate of claim 2 , having a structure which is ordered along its two dimensional crystalline silicate layers claim 2 , but which exhibits disorder between its crystalline silicate layers claim 2 , as evidenced by RED (rotating electron diffraction) structure analysis.4. The crystalline microporous silicate of claim 1 , which exhibits an Si-MAS NMR spectrum having resonances at chemical shifts of −113 ppm claim 1 , −107 ppm claim 1 , and −102 ppm claim 1 , relative to tetramethylsilane (TMS).5. The crystalline microporous silicate of claim 4 , wherein the resonances at chemical shifts of −113 ppm claim 4 , −107 ppm claim 4 , and −102 ppm have relative integrated intensities of 8 claim 4 , 5 claim 4 , and 3 claim 4 , respectively.7. A crystalline microporous silicate claim 4 , designated CIT-11 claim 4 , which exhibits a powder X-ray diffraction (XRD) pattern exhibiting at least five of the ...

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Номер записи: 61
05-01-2017 дата публикации

MOLECULAR SIEVE, MANUFACTURING METHOD THEREFOR, AND USES THEREOF

Номер: US20170001873A1
Автор: HUAN Mingyao, SHEN Zhenhao, Sun Hongmin, WANG Zhendong, XUE Mingwei, YANG Weimin, Zhang Bin
Принадлежит:

This invention relates to a molecular sieve, which has a specific XRD diffraction pattern and a specific layered structure. As compared with a prior art molecular sieve, the molecular sieve according to this invention exhibits improved catalytic performances and good service life and regeneration performance. The molecular sieve can be produced with a simplified procedure, under mild operation conditions, with less energy and material consumption and less side reactions, with a high product purity at low cost and a high yield. The molecular sieve according to this invention is especially suitable for use as an adsorbent or a catalyst. 5. The molecular sieve according to or , wherein the total pore volume (by the BET method) is not less than 0.5 cm/g , preferably 0.55-0.90 cm/g , the total specific surface area (by the BET method) is not less than 450 m/g , preferably 480-680 m/g , the external specific surface area (by the BET method) is not less than 185 m/g , preferably 200-400 m/g , and the external specific surface area accounts for not less than 40% , preferably 45-65% of the total specific surface area.6. The molecular sieve according to or , having a MWW topological framework structure , wherein at least 80% , preferably at least 85% , more preferably at least 90% , more preferably at least 95% , more preferably at least 99% of all crystals thereof are flake crystals having a thickness of about 5 nm by the TEM method.8. The process according to claim 7 , wherein the aza monocyclic cycloalkane has a C/N ratio of greater than 2 claim 7 , more preferably 2.5 or more claim 7 , the compound represented by the formula (I) has a C/N ratio of 10 or more claim 7 , 12 or more or 13 or more claim 7 , and the aza arene has a C/N ratio of 9 or more claim 7 , 10 or more or 11 or more.9. The process according to claim 7 , wherein the ratio by molar between the first oxide source (calculated as the first oxide) claim 7 , the second oxide source (calculated as the second ...

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Номер записи: 62
05-01-2017 дата публикации

ZEOLITIC MATERIALS AND METHODS FOR THEIR PREPARATION USING ALKENYLTRIALKYLAMMONIUM COMPOUNDS

Номер: US20170001874A1
Автор: Ahrens Sebastian, FEYEN Mathias, Gerhard Dirk, Iffland Gabriele, Müller Ulrich, Parvulescu Andrei-Nicolae, Schaack Bernd Bastian, Seelig Bianca, Son Sunghee
Принадлежит: BASF SE

The present invention relates to a process for the preparation of a zeolitic material comprising the steps of: 1. A process for the preparation of a zeolitic material comprising:{'sub': '2', 'claim-text': [{'sup': 1', '2', '3', '4', '+, 'more alkenyltrialkylammonium cation RRRRN-containing compounds'}, 'as structure directing agent; and, '(1) providing a mixture comprising one or more sources for YOand one or'}(2) crystallizing the mixture obtained in (1) to obtain a zeolitic material;wherein Y is a tetravalent element, and{'sup': 1', '2', '3, 'wherein R, R, and Rare each independently an alkyl group; and'}{'sup': '4', 'Ris an alkenyl group.'}2. The process of claim 1 , wherein R claim 1 , R claim 1 , and Rare each independently (C-C)alkyl claim 1 , and{'sup': '4', 'sub': 2', '6, 'wherein Ris (C-C)alkenyl.'}3. The process of claim 2 , wherein the structure directing agent provided in (1) comprises one or more compounds selected from the group consisting of N—(C-C)alkenyl-tri-(C-C)alkylammonium hydroxides.4. The process of claim 1 , wherein the mixture provided in (1) comprises two or more RRRRN-containing compounds claim 1 , wherein Rof the two or more compounds are different from one another and are (C-C)alkenyl groups.5. The process of claim 4 , wherein the mixture provided in (1) comprises two RRRRN-containing compounds claim 4 , wherein Rof the first compound (A) contains an end-chain —CH═CHmoiety claim 4 , and Rof the second compound (B) contains an end-chain moiety —CH claim 4 , andwherein a molar ratio A:B in the mixture is from 25:75 to 99:1.6. The process of claim 5 , wherein the compounds A and B are constitutional isomers with respect to the position of the double bond in R.7. The process of claim 1 , wherein Y is at least one selected from the group consisting of Si claim 1 , Sn claim 1 , Ti claim 1 , Zr and Ge.8. The process of claim 1 , wherein the one or more sources for YOcomprises one or more compounds selected from the group consisting of fumed ...

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Номер записи: 63
04-01-2018 дата публикации

ZEOLITE SSZ-52x

Номер: US20180002183A1
Автор: DAVIS Tracy
Принадлежит: Chevron U.S.A. INC.

The present invention relates to new crystalline zeolite SSZ-52prepared using a quaternary ammonium cation templating agent, for example, having the structure: 1. A zeolite having a mole ratio of 6-50 of an oxide selected from the group consisting of silicon oxide , germanium oxide and mixtures thereof to an oxide selected from aluminum oxide , gallium oxide , iron oxide and mixtures thereof , and exhibiting in the as synthesized form the XRD pattern of .2. A zeolite according to claim 1 , wherein the oxides comprise silicon oxide and aluminum oxide.3. A zeolite according to claim 1 , wherein said zeolite is in the hydrogen form.5. A zeolite according to claim 4 , wherein W is aluminum and Y is silicon.7. The method of claim 6 , wherein the MYOratio is in the range of 0.60-0.90.8. The method according to claim 6 , wherein the oxides are silicon oxide and aluminum oxide.9. The method of claim 6 , wherein the crystalline material has claim 6 , after calcination claim 6 , the X-ray diffraction lines of Table IV.10. The method of claim 6 , wherein the crystalline material exhibits a NOconversion of 100% at 250° C. after aging at 750° C. for 80 hr at 10% humidity.11. A product prepared by the process of .13. The method according to wherein the oxides are silicon oxide and aluminum oxide.14. The method of wherein the crystalline material has claim 12 , after calcination claim 12 , the X-ray diffraction lines of Table III.15. The method of claim 12 , wherein the crystalline material exhibits a NOconversion of 100% at 250° C. after aging at 750° C. for 80 hr at 10% humidity.16. The method of claim 12 , wherein the MYOratio is in the range of 0.60-0.90.17. A product prepared by the process of . The present invention relates to new crystalline zeolite SSZ-52x, a method for preparing SSZ-52x using a quaternary ammonium cation templating agent such as, for example, N,N-diethyl-5,8-dimethyl-2-azonium bicyclo[3.2.2]nonane, and processes employing SSZ-52x as a catalyst.Because of ...

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Номер записи: 64
03-01-2019 дата публикации

MOLECULAR SIEVE SSZ-91, METHODS FOR PREPARING SSZ-91, AND USES FOR SSZ-91

Номер: US20190002299A1
Автор: Lei Guan-Dao, Ojo Adeola Florence, Xie Dan, Zhang Yihua
Принадлежит:

A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure. 1. A molecular sieve belonging to the ZSM-48 family of zeolites , wherein the molecular sieve comprises:a silicon oxide to aluminum oxide mole ratio of 40 to 200,at least 70% polytype 6 of the total ZSM-48-type material present in the product, andan additional EUO-type molecular sieve phase in an amount of between 0 and 3.5 percent by weight of the total product; andwherein the molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between 1 and 8.3. The molecular sieve of or , wherein the molecular sieve has a silicon oxide to aluminum oxide mole ratio of 70 to 160.4. The molecular sieve of any of - , wherein the molecular sieve has a silicon oxide to aluminum oxide mole ratio of 80 to 140.5. The molecular sieve of any of - , wherein the molecular sieve comprises at least 80% polytype 6 of the total ZSM-48-type material present in the product.6. The molecular sieve of any of - , wherein the molecular sieve comprises between 0.1 and 2 wt. % EU-1.7. The molecular sieve of any of - , wherein the crystallites collectively have an average aspect ratio of between 1 and 5.8. The molecular sieve of any of - , wherein the molecular sieve comprises at least 90% polytype 6 of the total ZSM-48-type material present in the product.9. The molecular sieve of any of - , wherein the crystallites collectively have an average aspect ratio of between 1 and 3.10. A method of preparing a molecular sieve according to any of - ...

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Номер записи: 65
01-01-2015 дата публикации

Molecular sieves with a linde type a topology and related methods and systems

Номер: US20150004094A1
Автор: Joel SCHMIDT, Mark E. Davis
Принадлежит: California Institute of Technology CalTech

A method for preparing molecular sieves with a Linde Type A (LTA) topology structure, and molecular sieves obtained thereby are described wherein a structure directing agent comprising a triquaternary cation is contacted with a source of a first oxide of a first tetravalent element or a source of a first oxide of a trivalent element; and a source of an oxide of a pentavalent elements.

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Номер записи: 66
02-01-2020 дата публикации

Systems for acid digestion processes

Номер: US20200002784A1
Автор: Darwin Argumedo, Michael Heinrichs, Rachid Taha, Rick Peterson, Slawomir Winecki, Vinay V. Gadkari
Принадлежит: Battelle Memorial Institute Inc

A system for recovering rare earth elements from coal ash includes a leaching reactor, an ash dryer downstream of the leaching reactor, and a roaster downstream of the ash dryer that is cooperatively connected to both the leaching reactor and the ash dryer. Coal ash is mixed with an acid stream such that rare earth elements present in the coal ash are dissolved in the acid stream, thereby creating (i) a leachate containing the rare earth elements and (ii) leached ash. The leachate is heated to obtain acid vapor and an acid-soluble rare earth concentrate. Mixing of the coal ash with the acid stream can occur in a leaching reactor and heating of the leachate can occur in a roaster. The acid-soluble rare earth concentrate can be fed to a hydrometallurgical process to separate and purify the rare earth elements.

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Номер записи: 67
02-01-2020 дата публикации

METHODS FOR RECOVERY OF RARE EARTH ELEMENTS FROM COAL

Номер: US20200002785A1
Автор: Argumendo Darwin, Gadkari Vinay V., Heinrichs Michael, Peterson Rick, Taha Rachid, WINECKI SLAWOMIR
Принадлежит:

Methods of recovering rare earth elements, vanadium, cobalt, or lithium from coal are described. The coal is dissolved in a first solvent to dissolve organic material in the coal and create a slurry containing coal ash enriched with rare earth elements, vanadium, cobalt, or lithium. The enriched coal ash is separated from the first solvent. Residual organic material is removed from the coal ash. The rare earth elements, vanadium, cobalt, or lithium can then be recovered from the coal ash. The coal ash is mixed with an acid stream that dissolves the rare earth elements, thereby creating (i) a leachate containing the rare earth elements and (ii) leached ash. The leachate is heated to obtain acid vapor and an acid-soluble rare earth concentrate. The acid-soluble rare earth concentrate can be fed to a hydrometallurgical process to separate and purify the rare earth elements. 1. A method of recovering rare earth elements from coal , comprising:dissolving coal in a first solvent to dissolve organic material in the coal and create a slurry containing coal ash enriched with rare earth elements;separating the coal ash from the first solvent;removing residual organic material from the coal ash; andrecovering the rare earth elements from the coal ash.2. The method of claim 1 , wherein the first solvent is a bio-based hydrogen transfer solvent.3. The method of claim 1 , wherein the first solvent is soybean oil.4. The method of claim 1 , wherein the residual organic material is removed from the coal ash by washing the coal ash with a second solvent that is different from the first solvent.5. The method of claim 4 , wherein the second solvent is tetrahydrofuran.6. The method of claim 1 , wherein the residual organic material is removed from the coal ash by burning the coal ash at a temperature of about 300° C. to about 600° C.; orwherein the residual organic material is removed from the coal ash by comminution, froth flotation, or gravimetric separation.7. The method of claim 1 , ...

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Номер записи: 68
01-01-2015 дата публикации

Microporous Zirconium Silicate for the Treatment of Hyperkalemia

Номер: US20150004235A1
Автор: GUILLEM Alvaro F., KEYSER Donald Jeffrey
Принадлежит:

The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia. 146-. (canceled)47. A cation exchange composition comprising a zirconium silicate of formula (I):{'br': None, 'sub': p', 'x', '1-x', 'n', 'y', 'm, 'AMZrSiGeO\u2003\u2003(I),'}where A is a potassium ion, hydronium ion or mixtures thereof, M is at least one framework metal, wherein the framework metal is hafnium (4+), tin (4+), niobium (5+), titanium (4+), cerium (4+), germanium (4+), praseodymium (4+), terbium (4+) or mixtures thereof, “p” has a value from about 1 to about 20, “x” has a value from 0 to less than 1, “n” has a value from about 0 to about 12, “y” has is value from 0 to about 12, “m” has a value from about 3 to about 36 and 1≦n+y≦12,wherein the composition exhibits a median particle size of greater than 3 microns and less than 7% of the particles in the composition have a diameter less than 3 microns.48. The composition of claim 47 , wherein 4% of the particles in the composition have a diameter less than 3 microns.49. The composition of claim 47 , wherein less than 1% of the particles in the composition have a diameter less than 3 microns.50. The composition of claim 47 , wherein the median particle size ranges from 5 to 1000 microns.51. The composition of claim 47 , wherein the median particle size ranges from 20 to 100 microns.53. The composition of claim 47 , wherein the zirconium silicate is a ZS-1.54. The composition of claim 47 , wherein ...

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Номер записи: 69
14-01-2016 дата публикации

Separation and Storage of Fluids Using ITQ-55

Номер: US20160008754A1
Автор: Cantín Sanz Angel, CORCORAN, CORMA CANOS Avelino, JR. Edward W., Kortunov Pavel, Palomino Roca Miguel, Paur Charanjit S., Ravikovitch Peter I., Rey Garcia Fernando, Valencia Valencia Susana, Wang Yu
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

This invention refers to a microporous crystalline material of zeolitic nature that has, in its calcined state and in the absence of defects in its crystalline matrix manifested by the presence of silanols, the empirical formula 2. The method of claim 1 , wherein the zeolite ITQ-55 has claim 1 , in calcined state and in absence of defects in its crystalline matrix manifested by the presence of silanols claim 1 , an empiric formula{'br': None, 'i': x', 'y', ':g', '−g, 'sub': 1/n', '2', '2', '2', '2, '(MXO):YOGeO:(1)SiO'}in which{'sup': '+', 'M is selected between H, at least one inorganic cation of charge +n, and a mixture of both,'}X is at least one chemical element of oxidation state +3,Y is at least one chemical element with oxidation state +4 different from Si,x takes a value between 0 and 0.2, both included,y takes a value between 0 and 0.1, both included,g takes a value between 0 and 0.5, both included.3. The method of claim 2 , wherein x takes a value of essentially zero claim 2 , y takes a value of essentially zero claim 2 , and g takes a value of essentially zero.4. The method of claim 2 , wherein a) x takes a value of greater than zero claim 2 , b) y takes a value of essentially zero claim 2 , c) g takes a value of essentially zero claim 2 , or d) a combination thereof.5. The method of claim 1 , wherein exposing the input fluid stream to an adsorbent comprises exposing the input fluid stream to an adsorbent in a swing adsorption vessel.6. The method of claim 1 , wherein the first temperature and the second temperature are the same claim 1 , wherein the first pressure and the second pressure are the same claim 1 , or a combination thereof.7. The method of claim 1 , wherein forming an adsorbed product fluid stream comprises modifying the second temperature of the adsorbent.8. The method of claim 1 , wherein forming an adsorbed product fluid stream comprises exposing a fluid stream comprising a third component to the adsorbent comprising zeolite ITQ-55 claim 1 ...

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Номер записи: 70
14-01-2016 дата публикации

Separation and Storage of Fluids Using ITQ-55

Номер: US20160008756A1
Автор: Cantín Sanz Angel, CORCORAN, CORMA CANOS Avelino, JR. Edward W., Kortunov Pavel, Palomino Roca Miguel, Paur Charanjit S., Ravikovitch Peter I., Rey Garcia Fernando, Valencia Valencia Susana, Wang Yu
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

This invention refers to a microporous crystalline material of zeolitic nature that has, in its calcined state and in the absence of defects in its crystalline matrix manifested by the presence of silanols, the empirical formula 2. The method of claim 1 , wherein the zeolite ITQ-55 has claim 1 , in calcined state and in absence of defects in its crystalline matrix manifested by the presence of silanols claim 1 , an empiric formula{'br': None, 'i': x', 'y', ':g', 'g, 'sub': 1/n', '2', '2', '2', '2, '(MXO):YOGeO:(1−)SiO'}in which{'sup': '+', 'M is selected between H, at least one inorganic cation of charge +n, and a mixture of both,'}X is at least one chemical element of oxidation state +3,Y is at least one chemical element with oxidation state +4 different from Si,x takes a value between 0 and 0.2, both included,y takes a value between 0 and 0.1, both included,g takes a value between 0 and 0.5, both included.3. The method of claim 2 , wherein x takes a value of essentially zero claim 2 , y takes a value of essentially zero claim 2 , and g takes a value of essentially zero.4. The method of claim 2 , wherein a) x takes a value of greater than zero claim 2 , b) y takes a value of essentially zero claim 2 , c) g takes a value of essentially zero claim 2 , or d) a combination thereof.5. The method of claim 1 , wherein the membrane comprises particles of crystalline zeolite ITQ-55 having a mean particle size of about 20 nm to about 1 micron.6. The method of claim 1 , wherein the particles of crystalline molecular sieve zeolite ITQ-55 comprise a contiguous layer of particles.7. The method of claim 1 , wherein the particles of crystalline zeolite ITQ-55 comprise a layer of particles of crystalline zeolite ITQ-55 on a support.8. The method of claim 7 , wherein the support comprises glass claim 7 , fused quartz claim 7 , silica claim 7 , silicon claim 7 , clay claim 7 , metal claim 7 , porous glass claim 7 , sintered porous metal claim 7 , titania claim 7 , cordierite claim 7 ...

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Номер записи: 71
14-01-2016 дата публикации

Method for the synthesis of porous inorganic material, catalytic cracking of petroleum hydrocarbons and preparation of catalyst thereof

Номер: US20160008797A1
Автор: Jianzhong Chen, Letian Chen
Принадлежит: Zhanjiang Giant Success Investment Co ltd

A method for synthesis of porous inorganic materials, preparation of a catalyst and catalytic cracking of petroleum hydrocarbons thereof includes processes for synthesis of porous inorganic materials and preparation of the catalytic cracking catalyst and catalytic cracking of petroleum hydrocarbons. The synthesis process is advantaged in low cost in raw materials; the porous inorganic material has various pore structures; and transitional metal used overcomes the defects of the catalytic properties. The porous inorganic material serving as the main active ingredient and containing crystalline aluminum silicate zeolite structures provides surface acidity required by the catalytic reaction. The surface acidity is flexibly adjusted. The hierarchical pore profile improves the accessibility of the active center of the zeolite structure and favors the reaction efficiency and benefits of the petroleum hydrocarbon cracking, and reduces the negative effects caused by diffusion limit. The catalyst containing the porous inorganic material has low manufacturing cost and better properties.

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Номер записи: 72
14-01-2016 дата публикации

CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE- AND MULTI-SITE HETEROGENEOUS CATALYSTS

Номер: US20160008798A1
Автор: LEFENFELD Michael, Paterson Alexander James, POTTER Matthew Edward, Raja Robert
Принадлежит: SIGNA CHEMISTRY, INC.

The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries. 1slowly heating an isomorphously, metal-substituted aluminophosphate catalyst product containing a structure directing agent within its crystalline structure under a flowing inert gas at a calcination temperature ranging between about 200° C. and about 1000° C.,holding the isomorphously, metal-substituted aluminophosphate catalyst product under the flowing inert gas at the calcination temperature,calcining the isomorphously, metal-substituted aluminophosphate catalyst product for a time of at least about 3 to about 24 hours to form a substantially phase pure, calcined metal-substituted aluminophosphate, andslowly cooling the substantially phase pure, calcined metal-substituted aluminophosphate to room temperature.. A process for preparing a substantially phase pure, calcined metal-substituted aluminophosphate, AlPO, wherein at least one aluminum (Al) site is substituted by a divalent metal ion (M) and/or at least one phosphorous (P) site is substituted by a tetravalent metal ion (M) comprising the steps of: This application claims priority to U.S. Provisional Application 61/146,844, filed Jan. 23, 2009, and to U.S. patent application ...

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Номер записи: 73
14-01-2016 дата публикации

Material ITQ-55, Method for Preparation and Use

Номер: US20160009563A1
Автор: Cantín Sanz Angel, CORMA CANOS Avelino, Jordá Moret Jose Luis, Rey Garcia Fernando, Valencia Valencia Susana
Принадлежит:

This invention refers to a microporous crystalline material of zeolitic nature that has, in its calcined state and in the absence of defects in its crystalline matrix manifested by the presence of silanols, the empirical formula 3. A microporous crystalline material of zeolitic nature according to claim 1 , wherein X is selected between Al claim 1 , Ga claim 1 , B claim 1 , Fe claim 1 , Cr and mixtures thereof.4. A microporous crystalline material of zeolitic nature according to claim 1 , wherein Y is selected between Zr claim 1 , Ti claim 1 , Sn claim 1 , V and mixtures thereof.5. A microporous crystalline material of zeolitic nature according to claim 1 , wherein M is selected among H claim 1 , at least one inorganic cation of charge +n selected between alkaline claim 1 , alkaline-earth metals and combinations thereof claim 1 , and a mixture of both.6. A microporous crystalline material of zeolitic nature according to claim 1 , wherein “x” is 0 claim 1 , “y” is 0 claim 1 , and “g” is 0.7. A microporous crystalline material of zeolitic nature according to claim 1 , wherein “x” is 0 claim 1 , “y” is 0 and “g” is different from 0.8. A microporous crystalline material of zeolitic nature according to claim 1 , wherein:X is Al, Ga, B, Fe, Cr, and combinations of the same,y takes the value 0, andg takes the value 0.9. A microporous crystalline material of zeolitic nature according to claim 1 , wherein:Y is Ti, Zr, Sn and combinations thereofx takes the value 0, andg takes the value 0.10. A microporous crystalline material of zeolitic nature according to claim 1 , wherein:X is Al, Ga, B, Fe, Cr, and combinations thereof,Y is Ti, Zr, Sn, and combinations thereof andg takes the value 0.11. A microporous crystalline material of zeolitic nature according to or claim 1 , wherein:X is Al, Ga, B, Fe, Cr, and combinations thereof,y takes the value 0, andg takes a value different from 0 and less than 0.33.12. A microporous crystalline material of zeolitic nature according to claim ...

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Номер записи: 74
14-01-2016 дата публикации

METHOD FOR PRODUCING DDR TYPE ZEOLITE CRYSTALS AND METHOD FOR PRODUCING DDR TYPE ZEOLITE MEMBRANE

Номер: US20160009564A1
Автор: Hagio Takeshi, Ichikawa Makiko, YAJIMA Kenji
Принадлежит:

Provided is a method for producing a DDR type zeolite crystal, the method including: a raw material solution preparing step of preparing a raw material solution by mixing at least silica, water, an organic solvent, and 1-adamantanamine that is a structure directing agent; and a DDR type zeolite crystal generating step of generating a DDR type zeolite crystal by performing a heating treatment on the raw material solution, in which the organic solvent is an organic solvent containing no amine, and the raw material solution is a raw material solution containing no PRTR substance. 1. A method for producing a DDR type zeolite crystal , the method comprising:a raw material solution preparing step of preparing a raw material solution by mixing at least silica, water, an organic solvent, and 1-adamantanamine that is a structure directing agent; anda DDR type zeolite crystal generating step of generating a DDR type zeolite crystal by performing a heating treatment on the raw material solution, whereinthe organic solvent is an organic solvent containing no amine, andthe raw material solution is a raw material solution containing no PRTR substance.2. The method for producing a DDR type zeolite crystal according to claim 1 , wherein the organic solvent contains 70 mol % or more of a lower alcohol claim 1 , acetone claim 1 , or a mixture of a lower alcohol and acetone.3. The method for producing a DDR type zeolite crystal according to claim 2 , wherein the organic solvent is an alcohol having 3 or less carbon atoms.4. The method for producing a DDR type zeolite crystal according to claim 2 , wherein the lower alcohol is a monohydric or dihydric alcohol.5. The method for producing a DDR type zeolite crystal according to claim 2 , wherein the lower alcohol is ethanol or ethylene glycol.6. The method for producing a DDR type zeolite crystal according to claim 1 , wherein a value of the ratio of the content expressed in terms of mole of the water in the raw material solution to the ...

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Номер записи: 75
08-01-2015 дата публикации

DDR ZEOLITE SEED CRYSTAL, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING DDR ZEOLITE MEMBRANE

Номер: US20150010704A1
Автор: Hagio Takeshi, Ichikawa Makiko, Miyahara Makoto, YAJIMA Kenji
Принадлежит:

There are provided DDR type zeolite seed crystals capable of inhibiting generation of surplus DDR type zeolite crystals in the case of using the DDR type zeolite seed crystals as seed crystals upon forming a DDR type zeolite membrane on the surface of a porous support. The DDR type zeolite seed crystals have an average particle size of 0.05 to 1.5 μm; contain 90% or more of particles having an aspect ratio, which is obtained by dividing the maximum Feret's diameter by the minimum Feret's diameter, of 1 to 3; and have not more than 0.3 of a coefficient of variation of the square of the aspect ratio. 1. A DDR type zeolite seed crystal having an average particle size of 0.05 to 1.5 μm; containing 90% or more of particles having an aspect ratio , which is a value obtained by dividing the maximum Feret's diameter by the minimum Feret's diameter , of 1 to 3; and having not more than 0.3 of a coefficient of variation of the square of the aspect ratio.2. The DDR type zeolite seed crystal according to claim 1 , wherein the average particle size is 0.05 to 1.0 μm.3. The DDR type zeolite seed crystal according to claim 1 , wherein a Y value calculated from the following formula (1) is not less than 60 claim 1 , while defining a diffraction intensity of a diffraction peak caused by (024) plane of the DDR type zeolite crystal as A claim 1 , a minimum value of a diffraction intensity between the peaks of the (024) plane and (116) plane claim 1 , which is influenced by an amorphous substance content claim 1 , as B claim 1 , and a minimum value of a diffraction intensity between the peaks of the (024) plane and (202) plane as C on the basis of the diffraction intensity obtained by X-ray diffraction analysis.{'br': None, 'i': Y', 'A−C', 'B−C, '=()/().\u2003\u2003(1)'}4. A method for manufacturing a DDR type zeolite seed crystal to obtain the DDR type zeolite seed crystal according to claim 1 , the method comprising a heating step of heating a raw material solution containing silica ...

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Номер записи: 76
10-01-2019 дата публикации

METHOD FOR PRODUCING AEI ZEOLITE

Номер: US20190009257A1
Автор: ISHIKAWA Tomoya, TAKAMITSU Yasuyuki, YOSHIMITSU Mitsuaki
Принадлежит: TOSOH CORPORATION

Provided is a method for producing an AEI zeolite without the use of a zeolite Y and a raw material containing fluorine and phosphorus, the method including a crystallization step of crystallizing a composition containing a structure directing agent, a sodium source, water, and a zeolite having at least one of the following structures as a silica alumina source. 2. The method according to claim 1 , wherein the silica alumina source is a zeolite having at least one structure selected from the group consisting of ERI claim 1 , FER claim 1 , HEU claim 1 , and MOR.3. The method according to claim 1 , wherein a molar ratio of silica to alumina of the zeolite is from 10 to 100.4. The method according to claim 1 , wherein the structure directing agent is at least one selected from the group consisting of 1 claim 1 ,1 claim 1 ,3 claim 1 ,5-tetramethylpiperidinium cation claim 1 , 1 claim 1 ,1-diethyl-2 claim 1 ,6-dimethylpiperidinium cation claim 1 , 1 claim 1 ,1 claim 1 ,2 claim 1 ,6-tetramethylpiperidinium cation claim 1 , 1-ethyl-1 claim 1 ,2 claim 1 ,6-trimethylpiperidinium cation claim 1 , and 1 claim 1 ,1 claim 1 ,2-triethylpiperidinium cation.5. The method according to claim 1 , wherein the composition contains at least one selected from the group consisting of aluminum hydroxide claim 1 , aluminum oxide claim 1 , aluminum sulfate claim 1 , aluminum chloride claim 1 , aluminum nitrate claim 1 , amorphous aluminosilicate claim 1 , metallic aluminum claim 1 , and aluminum alkoxide.6. The method according to claim 1 , wherein the composition contains an amorphous aluminosilicate having a molar ratio of silica to alumina of 1.4 to 2000.7. The method according to claim 1 , wherein the composition contains at least one selected from the group consisting of an AEI zeolite claim 1 , a CHA zeolite claim 1 , an OFF zeolite claim 1 , an ERI zeolite claim 1 , a KFI zeolite claim 1 , an AFX zeolite claim 1 , an AFT zeolite claim 1 , an EAB zeolite claim 1 , a GME zeolite claim 1 ...

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Номер записи: 77
10-01-2019 дата публикации

HIGH CHARGE DENSITY METALLOPHOSPHATE MOLECULAR SIEVES

Номер: US20190009258A1
Автор: Lewis Gregory J.
Принадлежит:

A new family of highly charged crystalline microporous metallophosphate molecular sieves designated MeAPO-81 has been synthesized. These metallophosphates are represented by the empirical formula of: 2. The metallophosphate material of where A is potassium.3. The metallophosphate material of where E is aluminum.4. The metallophosphate material of where R is at least N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetramethyl-N claim 1 ,N′-p-xyleno-1 claim 1 ,6-hexanediammonium.5. The metallophosphate material of where R is at least N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetramethyl-N claim 1 ,N′-butano-1 claim 1 ,6-hexanediammonium.6. The metallophosphate material of where R is at least N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetrmaethyl-N claim 1 ,N′-hexano-1 claim 1 ,6-hexanediammonium.7. A crystalline modified form of the crystalline microporous metallophosphate of claim 1 , comprising a three-dimensional framework of [MO] claim 1 , [EO] and [PO] tetrahedral units and derived by modifying the crystalline microporous metallophosphate of claim 1 , the modifications including calcination claim 1 , ammonia calcinations claim 1 , ion-exchange claim 1 , steaming claim 1 , various acid extractions claim 1 , ammonium hexafluorosilicate treatment claim 1 , or any combination thereof.9. The process of where A is selected from the group consisting of Li claim 8 , Na claim 8 , K claim 8 , Rb and Cs and mixtures thereof and the source of A is selected from the group consisting of halide salts claim 8 , nitrate salts claim 8 , acetate salts claim 8 , sulfate salts claim 8 , hydroxide salts and mixtures thereof.10. The process of where M is selected from the group consisting of Zn claim 8 , Mn claim 8 , Co and Mg and mixtures thereof and where the source of M is selected from the group consisting of halide salts claim 8 , nitrate salts claim 8 , acetate salts claim 8 , sulfate salts and mixtures thereof.11. The process of where the source of E is selected from the group consisting of aluminum ...

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Номер записи: 78
11-01-2018 дата публикации

METHOD FOR PREPARING A NANOMETRIC ZEOLITE Y

Номер: US20180009670A1
Автор: Bats Nicolas, DODIN Mathias
Принадлежит: IFP ENERGIES NOUVELLES

Preparation of a FAU-structural-type nanometric zeolite Y having a crystal size of less than 100 nm and an Si/Al ratio that is greater than 2: mixing, in aqueous medium, of at least one AOsource of at least one tetravalent element A that is silicon, germanium, and/or titanium, at least one BOsource of at least one trivalent element B that is aluminum, boron, iron, indium, and/or gallium, at least one CO source of an alkaline metal or alkaline-earth metal C that is lithium, sodium, potassium, calcium, and/or magnesium the CO source also having at least one hydroxide ion source obtaining a gel, curing of the gel after at least 3 days of curing, with addition of at least one source of at least one tetravalent element A and the hydrothermal treatment of the gel obtained at a to achieve crystallization of the FAU-structural-type nanometric zeolite Y. 1. Method for preparation of a FAU-structural-type nanometric zeolite Y that has a crystal size of less than 100 nm and an Si/Al ratio that is greater than 2 , with said method comprising at least the following steps:{'sub': 2', 'b', '2/m', '2/m, 'claim-text': [{'br': None, 'i': v', ':w', ':x', 'y, 'sub': 2', 'b', '2/m', '2, 'AOBOCO:HO'}, 'with v being between 1 and 40,', 'with w being between 0.1 and 5,', 'with x being between 1 and 40,', 'with y being between 30 and 1000,', 'with b being between 1 and 3, b being a whole number or a rational number,', 'with m being equal to 1 or 2,, 'i) The mixing, in aqueous medium, of at least one AOsource of at least one tetravalent element A that is selected from among silicon, germanium, titanium by itself or in a mixture, at least one BOsource of at least one trivalent element B that is selected from among aluminum, boron, iron, indium, gallium, by itself or in a mixture, at least one CO source of an alkaline metal or alkaline-earth metal C selected from among lithium, sodium, potassium, calcium, magnesium by itself or in a mixture, with said CO source of alkaline metal or alkaline- ...

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Номер записи: 79
09-01-2020 дата публикации

ALUMINOPHOSPHATE-BASED ZEOLITE MEMBRANE SYNTHESIS METHOD

Номер: US20200009509A1
Автор: Hagio Takeshi, Miyahara Makoto, NODA Kenichi, SHIMIZU Katsuya
Принадлежит: NGK Insulators, Ltd.

A method of synthesis for an aluminophosphate-based zeolite membrane includes a steps of preparing a mixed solution with a pH greater than or equal to 6 and less than or equal to 9 by mixing an acidic phosphorous source with an alkali source, a steps of preparing a starting material solution by adding and mixing an aluminum source to the prepared mixed solution, and a steps of synthesizing an aluminophosphate-based zeolite membrane by hydrothermally synthesizing the starting material solution. 1. A method of synthesis for an aluminophosphate-based zeolite membrane comprising:preparing a mixed solution with a pH greater than or equal to 6 and less than or equal to 9 by mixing an acidic phosphorous source with an alkali source;preparing a starting material solution by adding and mixing an aluminum source to the prepared mixed solution; andsynthesizing an aluminophosphate-based zeolite membrane by hydrothermally synthesizing the starting material solution.2. The method of synthesis for an aluminophosphate-based zeolite membrane according to claim 1 , whereinin the step of preparing the starting material solution, the mixed solution is configured to be less than or equal to a temperature that enables suppression of a reaction of the aluminum source with the phosphorous source in the mixed solution.3. The method of synthesis for an aluminophosphate-based zeolite membrane according to claim 2 , whereinin the step of preparing the starting material solution, the mixed solution has a temperature of less than or equal to 40 degrees C.4. The method of synthesis for an aluminophosphate-based zeolite membrane according to claim 2 , whereinin the step of preparing the starting material solution, the mixed solution has a temperature of less than or equal to 25 degrees C.5. The method of synthesis for an aluminophosphate-based zeolite membrane according to claim 2 , whereinin the step of preparing the starting material solution, the mixed solution has a temperature of less than or ...

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Номер записи: 80
09-01-2020 дата публикации

ERI-STRUCTURE ZEOLITE MEMBRANE AND MEMBRANE STRUCTURE

Номер: US20200009512A1
Автор: Hagio Takeshi, Miura Aya, Miyahara Makoto, NODA Kenichi, SHIMIZU Katsuya, Yoshimura Ryotaro
Принадлежит: NGK Insulators, Ltd.

A peak intensity of a (002) plane is greater than or equal to 0.5 times a peak intensity of a (100) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of the ERI membrane. 1. A zeolite membrane having an ERI structure , whereina peak intensity of a (002) plane is greater than or equal to 0.5 times a peak intensity of a (100) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of the zeolite membrane.2. The zeolite membrane having an ERI structure according to claim 1 , whereinthe peak intensity of the (002) plane is greater than or equal to 0.9 times the peak intensity of the (100) plane.3. The zeolite membrane having an ERI structure according to or claim 1 , the zeolite membrane comprising two or more of Si claim 1 , Al and P.4. The zeolite membrane having an ERI structure according to claim 3 , the zeolite membrane comprising at least Al claim 3 , P and O.5. A membrane structure comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the zeolite membrane having an ERI structure according to , and'}a porous support configured to support the zeolite membrane having an ERI structure. The present invention relates to a zeolite membrane having an ERI structure and a membrane structure.A method is known to typically synthesize SAPO and AlPO zeolite membranes that include an ERI structure and are synthesized using seed crystals having an ERI structure that have been synthesized from a mixed crystal having an ERI structure and an OFF structure (reference is made for example to Journal of Membrane Science, 520, (2016), 507-514, “Aluminophosphate-17 and silicoaluminophosphate-17 membranes for COseparations”).The method is disclosed to perform the membrane on a support.However, a zeolite membrane having an ERI structure as disclosed in Non-Patent Literature 1 may include the presence of zeolites that have an OFF structure which has larger pores than that of an ERI structure. In ...

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Номер записи: 81
09-01-2020 дата публикации

PROCESS FOR CONTINUOUSLY SYNTHESIZING ZEOLITE CRYSTALS

Номер: US20200010330A1
Автор: Dubois Jean-Luc, Lecomte Yvan, LUTZ CÉCILE, NICOLAS Serge
Принадлежит: Arkema France

The present invention relates to a process for preparing zeolite crystals continuously, comprising the continuous introduction of a composition capable of generating zeolite crystals into at least one crystallization reaction zone subjected to stirring means, giving said composition a flow characterized by a relative Reynolds number Reof between 40 and 50 000, and the continuous recovery of the crystals formed according to a flow characterized by a net Reynolds number Reof between 1 and 1500. 1. Process for preparing zeolite crystals continuously , comprising at least the following steps:a) continuous supply of a composition capable of generating zeolite crystals;{'sub': 'r', 'b) continuous introduction of said composition into at least one crystallization reaction zone subjected to stirring means, giving said composition a flow characterized by a relative Reynolds number Reof between 40 and 50 000, limits included,'}{'sub': 'n', 'c) continuous recovery of the crystals formed in step b) according to a flow characterized by a net Reynolds number Reof between 1 and 1500, limits included.'}2. Process according to claim 1 , wherein the difference between the relative Reynolds number Reand the net Reynolds number Reis greater than 50.3. Process according to claim 1 , for preparing crystals of a zeolite of MFI type claim 1 , a zeolite of MOR type claim 1 , of OFF type claim 1 , of MAZ type claim 1 , of CHA type and of HEU type claim 1 , a zeolite of FAU type claim 1 , a zeolite of EMT type or a zeolite of LTA type claim 1 , and also the other zeotypes.4. Process according to claim 3 , for preparing zeolite crystals claim 3 , where the zeolite is chosen from zeolites of MFI type claim 3 , of FAU type claim 3 , of LTA type claim 3 , the zeolites of CHA type and the zeolites of HEU type.5. Process according to claim 1 , comprising at least the following steps:1) continuous preparation of a composition capable of generating zeolite crystals, in order to obtain a synthesis ...

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Номер записи: 82
09-01-2020 дата публикации

ACCELERATED ALUMINOSILICATE ZEOLITE CRYSTALLIZATION

Номер: US20200010331A1
Автор: Kunkes Eduard, Moini Ahmad, Ortega Maritza I.
Принадлежит:

Disclosed herein are methods for crystallizing aluminosilicate zeolites, including the steps of preparing a mixture containing a silica source, a mineralizing agent, an organic structure directing agent; heating the mixture to form a heated mixture; and adding an alumina source to the heated mixture. The method steps described herein can provide an accelerated aluminosilicate zeolite crystallization process as compared, e.g., to conventional processes. 1. A method of crystallizing zeolites , comprising:preparing a mixture comprising a silica source, a mineralizing agent, an organic structure directing agent, and optionally, zeolite crystals;heating the mixture to form a heated mixture; andadding an alumina source to the heated mixture.2. The method of claim 1 , wherein the heating is conducted claim 1 , at least in part claim 1 , at a pressure of at least 1 atmosphere.3. The method of claim 1 , wherein the heated mixture is free of alumina prior to the adding step claim 1 , other than alumina in the optional zeolite crystals.4. The method of claim 1 , wherein the mixture comprises the optional zeolite crystals claim 1 , and wherein the zeolite crystals have an 8 ring pore size.5. The method of claim 1 , wherein the alumina source is added continuously at a constant flow rate.6. The method of claim 1 , wherein the method provides a substantially crystallized product in a time period that is less than a comparative time period required to provide a substantially crystallized product in a control process comprising combining the alumina source with the silica source in an amount of about 80 wt. % or more claim 1 , based on a weight of a total amount of alumina source to be added claim 1 , mineralizing agent claim 1 , organic structure directing agent claim 1 , and optional zeolite crystals.7. The method of claim 6 , wherein the time period is about 1.5 times shorter than the comparative time period.8. The method of claim 6 , wherein the time period is about 2 times ...

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Номер записи: 83
09-01-2020 дата публикации

METHODS FOR PREPARATION OF CHA ZEOLITE AT AMBIENT PRESSURE

Номер: US20200010332A1
Автор: Lang David Ari
Принадлежит:

The disclosure, in one aspect, relates to methods of preparing a CHA zeolite under ambient pressure conditions. In further aspects, the disclosure relates to methods such that a mother liquor can be isolated from a disclosed method, and recycled for use in a disclosed method for further preparation of a CHA zeolite. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure. 1. A method for preparing a CHA zeolite , the method comprising:heating a zeolite precursor mixture at ambient pressure in a reflux reaction vessel of a reflux reactor system comprising the reflux reaction vessel and a reflux condenser;wherein the zeolite precursor mixture comprises water, a silicate solution, a zeolite, and a CHA templating agent;wherein heating comprises heating the reaction vessel such the zeolite precursor mixture in the reflux reaction vessel has a reaction temperature of from about 80° C. to about 120° C.;thereby forming a CHA zeolite and a mother liquor solution.2. The method of claim 1 , wherein the ambient pressure is about 700 torr to about 800 torr.3. The method of claim 1 , wherein the zeolite in the zeolite precursor mixture is selected from a USY zeolite claim 1 , a pre-treated Na-Y zeolite claim 1 , a Na-Y zeolite claim 1 , and combinations thereof.4. The method of claim 3 , wherein the zeolite in the zeolite precursor mixture is selected from a pre-treated Na-Y zeolite claim 3 , a Na-Y zeolite claim 3 , and combinations thereof.5. The method of claim 3 , wherein the zeolite in the zeolite precursor mixture is a USY zeolite.6. The method of claim 1 , wherein the silicate in the zeolite precursor mixture is a sodium silicate solution comprising SiO claim 1 , NaO claim 1 , and water.7. The method of claim 1 , wherein the CHA templating agent is selected from N claim 1 ,N claim 1 ,N-trimethyl-1-ammonium adamantine claim 1 , tetraethylenepentamine claim 1 , and a combination ...

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Номер записи: 84
03-02-2022 дата публикации

METHODS FOR PRODUCING HIERARCHICAL MESOPOROUS BETA ZEOLITE

Номер: US20220032275A1
Автор: Zhang Ke
Принадлежит: Saudi Arabian Oil Company

A method for producing a hierarchical mesoporous beta includes mixing a beta zeolite with an aqueous metal hydroxide solution and heating the beta zeolite and the aqueous metal hydroxide mixture to produce a desilicated beta zeolite, contacting the desilicated beta zeolite with an ammonium salt solution to produce an intermediate hierarchical mesoporous beta zeolite, and treating the intermediate hierarchical mesoporous beta zeolite with an acidic solution to produce the hierarchical mesoporous beta zeolite. The hierarchical mesoporous beta zeolite includes a molar ratio of silicon to aluminum of greater than 12.5, a total pore volume of greater than or equal to the total pore volume of the intermediate hierarchical mesoporous beta zeolite, and an average mesopore size of greater than or equal to the average mesopore size of the hierarchical mesoporous beta zeolite. The method may also include calcining the intermediate hierarchical mesoporous beta zeolite. 1. A method for producing a hierarchical mesoporous beta zeolite , the method comprising:mixing a beta zeolite with an aqueous metal hydroxide solution;heating the beta zeolite and the aqueous metal hydroxide mixture at a temperature of greater than or equal to 100° C., wherein the heating causes desilication of the beta zeolite to produce a desilicated beta zeolite;{'sup': '3', 'contacting the desilicated beta zeolite with an ammonium salt solution to produce an intermediate hierarchical mesoporous beta zeolite comprising (a) a molar ratio of silicon to aluminum of less than 12.5, (b) a total pore volume of greater than or equal to 0.3 cm/g, and (c) an average mesopore size of greater than 8 nm, wherein the contacting causes ion exchange of sodium ions with ammonium ions in the intermediate hierarchical mesoporous beta zeolite; and'}treating the intermediate hierarchical mesoporous beta zeolite with an acidic solution to produce the hierarchical mesoporous beta zeolite comprising (e) a molar ratio of silicon to ...

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Номер записи: 85
03-02-2022 дата публикации

ZEOLITE AND PREPARATION METHOD THEREFOR

Номер: US20220033269A1
Автор: BYEON Tae Bong, Kim Kiyoung, SOHN Keon Mok
Принадлежит:

Disclosed is a method of producing zeolite that includes obtaining a lithium residue including aluminosilicate from lithium ore including lithium oxide; washing the lithium residue to adjust the pH of the lithium residue; adjusting a molar ratio of silicon to aluminum (Si/Al) included in the lithium residue; preparing a hydrogel by adding an alkali material to the lithium residue; and preparing crystals by crystallizing the lithium residue in the form of a hydrogel. 1. A method of producing zeolite , comprisingobtaining a lithium residue including aluminosilicate from lithium ore including lithium oxide;washing the lithium residue to adjust the pH of the lithium residue;adjusting a molar ratio of silicon to aluminum (Si/Al) included in the lithium residue;preparing a hydrogel by adding an alkali material to the lithium residue; andpreparing crystals by crystallizing the lithium residue in the form of a hydrogel.2. The method of claim 1 , whereinthe obtaining of the lithium residue comprisesheat-treating the lithium ore;pulverizing the heat-treated lithium ore;precipitating lithium sulfate from the pulverized lithium ore; andleaching and separating the lithium sulfate into water.3. The method of claim 2 , whereinIn the heat-treating of the lithium ore,the lithium ore is heat-treated at a temperature of 900 to 1200° C.4. The method of claim 1 , whereinin the obtaining of the lithium residue,the lithium residue comprises{'sub': 2', '3', '2', '2', '3', '2', '2, '20 to 30 wt % of alumina (AlO), 60 to 70 wt % of silica (SiO), 10 wt % or less of at least one of iron oxide (FeO), calcium oxide (CaO), sodium oxide (NaO), and potassium oxide (KO) based on total 100 wt %.'}5. The method of claim 1 , whereinin the adjusting of the pH of the lithium residue,{'sub': '4', 'sup': '2−', 'the lithium residue is washed to remove the sulfate ion (SO) from the lithium residue.'}6. The method of claim 1 , whereinin the adjusting of the pH of the lithium residue,the pH of the lithium ...

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Номер записи: 86
03-02-2022 дата публикации

High-efficiency, fast and green method for preparing zeolite molecular sieve

Номер: US20220033270A1
Автор: Junchang CHEN, Mingxing Zhang, Shuao Wang
Принадлежит: SUZHOU UNIVERSITY

A method for preparing a zeolite molecular sieve includes the steps of: (1) mixing at least one of a silicon source, an aluminum source and a phosphorus source with an alkaline substance, a template agent and water uniformly to obtain a zeolite molecular sieve precursor solution; aging the zeolite molecular sieve precursor solution at 20-30° C. for 10-15 h; and subjecting the aged solution to ionizing radiation, and then washing the obtained solid to neutrality and drying to obtain the zeolite molecular sieve. The method of the present invention is green, simple and extremely cost-effective. Under the irradiation of an ionizing radiation source, the synthesis period of zeolite molecular sieve is short and no heating is needed in the preparation process, so energy consumption is reduced and a high-pressure system is avoided.

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Номер записи: 87
03-02-2022 дата публикации

LOW PRESSURE SYNTHESIS OF ZEOLITE SSZ-13

Номер: US20220033271A1
Автор: Zones Stacey Ian
Принадлежит:

A method is described for the synthesis of aluminosilicate CHA framework type molecular sieves at ambient pressure via interzeolite conversion from FAU framework type zeolites. 1. A method of synthesizing a molecular sieve of CHA framework type , the method comprising the steps of: (a) a source of silicon and aluminum, where the source of both silicon and aluminum is a zeolite of FAU framework type;', '(b) a source of an alkali or alkaline earth metal (M);', '(c) a CHA structure directing agent (Q);', '(d) a source of hydroxide ions; and', '(e) water; and, '(1) preparing a reaction mixture comprising(2) heating the reaction mixture at ambient pressure and at a temperature of from 50° C. to 90° C. until crystals of the molecular sieve are formed.3. The method of claim 1 , wherein the zeolite of FAU framework type is zeolite Y.4. The method of claim 1 , wherein the zeolite of FAU framework type has a molar ratio of SiO/AlOin a range of from 20 to 500.5. The method of claim 1 , wherein the zeolite of FAU framework type has a molar ratio of SiO/AlOin a range of from 30 to 100.6. The method of claim 1 , wherein the reaction mixture is free of a separate source of silicon.7. The method of claim 6 , wherein the separate source of silicon is selected from the group consisting of colloidal suspensions of silica claim 6 , fumed silicas claim 6 , precipitated silicas claim 6 , alkali metal silicates claim 6 , tetraalkyl orthosilicates claim 6 , and any combination thereof.8. The method of claim 1 , wherein the alkali or alkaline earth metal (M) comprises sodium.9. The method of claim 1 , wherein the CHA framework structure directing agent comprises one or more of a N-alkyl-3-quinuclidinol claim 1 , a N claim 1 ,N claim 1 ,N-trialkylexoaminonorbornane claim 1 , a N claim 1 ,N claim 1 ,N-trimethyl-1-adamantylammonium compound claim 1 , a N claim 1 ,N claim 1 ,N-trimethyl-2-adamantyl-ammonium compound claim 1 , a N claim 1 ,N claim 1 ,N-trimethylcyclohexylammonium compound claim ...

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Номер записи: 88
19-01-2017 дата публикации

ZEOLITE, SEPARATION MEMBRANE STRUCTURE, AND METHOD OF MANUFACTURING A ZEOLITE

Номер: US20170014781A1
Автор: Hagio Takeshi, NODA Kenichi
Принадлежит: NGK Insulators, Ltd.

A zeolite includes Si, Al, Ag and at least one of an alkali metal or alkaline earth metal, and satisfies the relation 0.02≦Ag[mol %]/(Si[mol %]+10×T[mol %])≦0.17 (wherein, T[mol %] denotes the molar concentration of the alkali metal and alkaline earth metal.) 110-. (canceled)11. A zeolite used in olefin/paraffin separation , the zeolite comprising Si , Al , Ag and at least one of an alkali metal or alkaline earth metal , and satisfying the following inequality:{'br': None, '0.02≦Ag[mol %]/(Si[mol %]+10×T[mol %])≦0.17'}wherein T[mol %] denotes the molar concentration of the alkali metal and alkaline earth metal.12. The zeolite according to and satisfying the following inequality:{'br': None, '0.03≦Ag[mol %]/(Si[mol %]+10×T[mol %])≦0.14'}wherein T[mol %] denotes the molar concentration of the alkali metal and alkaline earth metal.13. The zeolite according to claim 11 , whereina maximum value of an inner diameter of at least one of a plurality of pores is greater than or equal to 0.4 nm.14. The zeolite according to claim 11 , whereinthe maximum value of the inner diameter of the respective plurality of pores is less than or equal to 0.7 nm.15. A separation membrane structure used in olefin/paraffin separation claim 11 , the separation membrane structure comprising:a porous substrate main body; and {'br': None, '0.02≦Ag[mol %]/(Si[mol %]+10×T[mol %])≦0.17'}, 'a zeolite membrane disposed on a surface of the substrate main body, wherein the zeolite membrane comprises Si, Al, Ag and at least one of an alkali metal or alkaline earth metal, and satisfies the following inequalitywherein T[mol %] denotes a molar concentration of the alkali metal and alkaline earth metal.16. The separation membrane structure according to and satisfying the following inequality:{'br': None, '0.03≦Ag[mol %]/(Si[mol %]+10×T[mol %])≦0.14'}wherein T[mol %] denotes the molar concentration of the alkali metal and alkaline earth metal.17. The separation membrane structure according to claim 15 , ...

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Номер записи: 89
19-01-2017 дата публикации

METHOD FOR TREATING ENGINE EXHAUST BY USE OF HYDROTHERMALLY STABLE, LOW-TEMPERATURE NOx REDUCTION NH3-SCR CATALYSTS

Номер: US20170014814A1
Автор: Chaitanya K. Narula, Xiaofan Yang
Принадлежит: UT Battelle LLC

A catalyst composition includes a heterobimetallic zeolite characterized by a chabazite structure loaded with copper ions and at least one trivalent metal ion other than Al 3+ . The catalyst composition decreases NO x emissions in diesel exhaust and is suitable for operation in a catalytic converter.

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Номер записи: 90
18-01-2018 дата публикации

Method for the Pervaporation and Vapor-Permeation Separation of Gas-Liquid Mixtures and Liquid Mixtures by SAPO-34 Molecular Sieve Membrane

Номер: US20180015420A1
Автор: CURULLA-FERRE Daniel, Sun Yuhan, Sun Zhiqiang, ZHANG Yanfeng
Принадлежит:

The present invention discloses a method for the pervaporation and vapor-permeation separation of a gas-liquid mixture or a liquid mixture by a SAPO-34 molecular sieve membrane, which comprises: 1) mixing an Al source, tetraethyl ammonium hydroxide, water, a Si source and a P source, and subjecting the resultant to hydrothermal crystallization, then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds; 2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support tube; 3) synthesis of a SAPO-34 molecular sieve membrane tube; 4) calcining the obtained SAPO-34 molecular sieve membrane tube to obtain a SAPO-34 molecular sieve membrane; 5) using the SAPO-34 molecular sieve membrane obtained from step 4) to perform separation of a gas-liquid mixture or a liquid mixture via a process of pervaporation separation or vapor-permeation separation. The invention has the advantages of very high methanol selectivity and permeation flux, and provides an efficient and energy-saving separation way via pervaporation or vapor-permeation separation. 1. A method for pervaporation separation of a gas-liquid mixture or a liquid mixture by preparing and using a SAPO-34 molecular sieve membrane , characterized in that the method comprises:1) mixing and dissolving an Al source, tetraethyl ammonium hydroxide TEAOH, water, a Si source and a P source to make a reaction liquor for seeds, which is then subjected to crystallization for 4-7 h by heating at 170-210° C., then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds;{'sub': 2', '3', '2', '5', '2', '2, 'wherein the molar ratio of the Al source, P source, Si source, tetraethylammonium hydroxide and all water in the reaction liquor for seeds is 1 AlO: 1-2 PO: 0.3-0.6 SiO: 1-3 TEAOH: 55-150 HO.'}2) coating the SAPO-34 molecular sieve seeds onto the internal surface of a porous support tube to get a porous support tube coated with SAPO-34 molecular sieve seeds;3) synthesizing a SAPO- ...

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Номер записи: 91
18-01-2018 дата публикации

Pervaporation and Vapor-Permeation Separation of Gas-Liquid Mixtures and Liquid Mistures by Ion Exchanged SAPO-34 Molecular Sieve Membrane

Номер: US20180015421A1
Автор: CURULLA-FERRE Daniel, Sun Yuhan, Sun Zhiqiang, ZHANG Yanfeng
Принадлежит:

The invention discloses a method for the pervaporation and vapor-permeation separation of a gas-liquid mixture/liquid mixture by an ion-exchanged SAPO-34 molecular sieve membrane, said method comprises the following steps: 1) synthesis of SAPO-34 molecular sieve seeds; 2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support; 3) synthesis of SAPO-34 molecular sieve membrane; 4) performing ion exchange and calcination; 5) using the ion-exchanged SAPO-34 molecular sieve membrane obtained in step 4) to perform the separation of a gas-liquid mixture or a liquid mixture by a process of pervaporation separation or vapor-permeation separation. The present method for membrane separation of methanol-dimethyl carbonate has advantages like low energy consumption, being not limited by azeotropic mixture, high methanol flux and high separation factors and thus has great economic value. 1. A method for the separation of a gas-liquid mixture or a liquid mixture by preparing and using an ion-exchanged SAPO-34 molecular sieve membrane , said method comprises the following steps:{'sub': 2', '3', '2', '5', '2', '2, '1) mixing and dissolving an Al source, tetraethyl ammonium hydroxide (TEAOH), water, a Si source and a P source to make reaction liquor for seeds, which is then subjected to crystallization for 4-7 h by heating at 170-210° C., then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds; wherein the molar ratio of the Al source, P source, Si source, tetraethylammonium hydroxide and all water in the reaction liquor for seeds is :1 AlO: 1-2 PO: 0.3-0.6 SiO: 1-3 TEAOH : 55-150 HO;'}2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support to get a porous support coated with SAPO-34 molecular sieve seeds; A. uniformly mixing an Al source, a P source, a Si source, tetraethylammonium hydroxide, di-n-propyl amine (DPA), water and a fluoride to form a mother liquor for SAPO-34 molecular sieve membrane ...

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Номер записи: 92
18-01-2018 дата публикации

METHOD FOR PREPARING STRUCTURED DIRECTING AGENT

Номер: US20180016231A9
Автор: COLLIER Steven, GOU Da-Ming, Wilt Jeremy
Принадлежит:

Provided is a method for preparing a structure directing agent (SDA) for crystalline molecular sieve synthesis comprising the steps of (a) hydrolyzing analkyl sulfate counterion of a quaternary ammonium salt to produce an organic ammonium salt having a hydrogen sulfate counterion; and (b) contacting the organic ammonium salt having the hydrogen sulfate counterion with a source of hydroxide in solution to form an organic ammonium salt having a hydroxide counterion; wherein the organic ammonium salt is a structure directing agent (SDA) for crystalline molecular sieve synthesis. 1. A method for preparing a structure directing agent (SDA) for crystalline molecular sieve synthesis comprising the steps of:a. hydrolyzing analkyl sulfate counterion of a quaternary ammonium salt to produce an organic ammonium salt having a hydrogen sulfate counterion; andb. contacting the organic ammonium salt having the hydrogen sulfate counterion with a source of hydroxide in solution to form an organic ammonium salt having a hydroxide counterion; wherein the organic ammonium salt is a structure directing agent (SDA) for crystalline molecular sieve synthesis.2. The method of claim 1 , wherein the contacting step further comprises precipitating a sulfate from the solution.3. The method of claim 2 , wherein the precipitated sulfate is removed from the solution by filtration.4. The method of claim 1 , wherein the hydrolyzing step comprises contacting the alkyl sulfate counterion of an organic ammonium salt with sulfuric acid or hydroxide.5. The method of claim 1 , wherein the source of hydroxide is an alkali metal hydroxide or an ammonium hydroxide.6. The method of claim 1 , wherein the organic ammonium salt is a structure directing agent (SDA) for synthesis of a molecular sieve having a framework selected from CHA claim 1 , AEI claim 1 , AFX claim 1 , ERI claim 1 , LEV claim 1 , AFT claim 1 , or an intergrowth of two or more of these.7. The method of claim 1 , wherein the organic ammonium ...

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Номер записи: 93
21-01-2021 дата публикации

A PROCESS FOR PREPARING A ZEOLITIC MATERIAL HAVING FRAMEWORK TYPE AEI

Номер: US20210016262A1
Автор: MCGUIRE Robert, MOIMI Ahmad, MUELLER Uiich
Принадлежит: BASF CORPORATION

A process for preparing a zeolitic material having framework type AEI and having a framework structure which comprises a tetravalent element Y, a trivalent element X, and oxygen, said process comprising (i) providing a zeolitic material having framework type CHA and having a framework structure comprising the tetravalent element Y, the trivalent element X, and oxygen; (ii) preparing a synthesis mixture comprising the zeolitic material provided in (i), water, a source of the tetravalent element Y other than the zeolitic material provided in (i), and an AEI framework structure directing agent; (iii) subjecting the synthesis mixture prepared in (ii) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a temperature in the range of from 100 to 200° C. and keeping the synthesis mixture at a temperature in this range under autogenous pressure, obtaining the zeolitic material having framework type AEI; wherein Y is one or more of Si, Ge, Sn, Ti, Zr; wherein X is one or more of Al, B, Ga, In; wherein in the framework structure of the zeolitic material provided in (i), the molar ratio Y:X, calculated as YO:XO, is at most 20:1. 1. A process for preparing a zeolitic material having framework type AEI and having a framework structure which comprises a tetravalent element Y , a trivalent element X. and oxygen , said process comprising(i) providing a zeolitic material having framework type CHA and having a framework structure comprising the tetravalent element Y, the trivalent element X, and oxygen;(ii) preparing a synthesis mixture comprising the zeolitic material provided in (i), water, a source of the tetravalent element Y other than the zeolitic material provided in (i), and an AEI framework structure directing agent;(iii) subjecting the synthesis mixture prepared in (ii) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a temperature in the range of from 100 to 200° C. and keeping the synthesis mixture at a ...

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Номер записи: 94
21-01-2021 дата публикации

A PROCESS FOR PREPARING A ZEOLITIC MATERIAL COMPRISING A METAL M AND HAVING FRAMEWORK TYPE AEI

Номер: US20210017033A1
Автор: MCGUIRE Robert, Moini Ahmad, Mueller Ulrich
Принадлежит: BASF CORPORATION

A process for preparing a zeolitic material comprising a metal M, having framework type AEI, and having a framework in structure which comprises a tetravalent element Y, a trivalent element X, and oxygen, said process comprising (i) providing a zeolitic of material comprising the metal M, having a framework type other than AEI, and having a framework structure comprising the trivalent element X, and oxygen; (ii) preparing a synthesis mixture comprising the zeolitic material provided in (i), water, a source of the tetravalent element Y, and an AEI framework structure directing agent; (iii) subjecting the synthesis mixture prepared in (ii) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a temperature in the range of from 100 to 200 ° C. and keeping the synthesis mixture at a temperature in this range under autogenous pressure, obtaining the zeolitic material having framework type AEI; wherein Y is one or more of Si, Ge, Sn, Ti, Zr; wherein X is one or more of Al, B, Ga, In; wherein M is a transition metal of groups 7 to 12 of the periodic table of elements. 1. A process for preparing a zeolitic material comprising a metal M , having framework type AEI , and having a framework structure which comprises a tetravalent element Y , a trivalent element X , and oxygen , said process comprising:(i) providing a zeolitic material comprising the metal M, having a framework type other than AEI, and having a framework structure comprising the trivalent element X, and oxygen;(ii) preparing a synthesis mixture comprising the zeolitic material provided in (i), water, a source of the tetravalent element Y, and an AEI framework structure directing agent;(iii) subjecting the synthesis mixture prepared in (ii) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a hydrothermal synthesis temperature in a range of from 100 to 200° C., to obtain a heated synthesis mixture, and keeping the heated synthesis mixture at a temperature ...

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Номер записи: 95
21-01-2021 дата публикации

FILLER FOR RESINOUS COMPOSITION, FILLER-CONTAINING SLURRY COMPOSITION AND FILLER-CONTAINING RESINOUS COMPOSITION AS WELL AS PRODUCTION PROCESS FOR FILLER FOR RESINOUS COMPOSITION

Номер: US20210017392A1
Автор: HAGIMOTO Shinta, KURAKI Masaru, TOMITA Nobutaka
Принадлежит: ADMATECHS CO., LTD.

A filler for resinous composition is contained and used in resinous composition constituting electronic packaging material for electronic device, and includes: a filler ingredient including a crystalline siliceous material with a crystal structure made of at least one member selected from the group consisting of type FAU, type FER, type LTA, type MFI and type CHA, and/or type MWW, wherein: the filler ingredient is free of any activity when evaluated by an “NH3-TPD” method; and includes the crystalline siliceous material in an amount falling in a range allowing the filler ingredient to exhibit a negative thermal expansion coefficient. The filler ingredient may further be free of a surface in which silver, copper, zinc, mercury, tin, lead, bismuth, cadmium, chromium, cobalt and nickel are exposed. 1. A filler for resinous composition , the filler contained and used in resinous composition constituting electronic packaging material for electronic device , the filler comprising:a filler ingredient including a crystalline siliceous material with a crystal structure made of at least one member selected from the group consisting of type FAU, type FER, type LTA, type MFI, type CHA, and type MWW, wherein:the filler ingredient does not have any activity when evaluated by an NH3-TPD method;the filler ingredient includes the crystalline siliceous material in an amount falling in a range allowing the filler ingredient to exhibit a negative thermal expansion coefficient;the crystalline siliceous material includes an alkali metal in a content of 0.1% by mass or less; andwhen the crystalline siliceous material is immersed in water conditioned at 120° C. and under two atm for 24 hours, an amount of each of Li, Na and K extracted in the water is five ppm or less.2. A filler for resinous composition , the filler contained and used in resinous composition , the filler comprising:a filler ingredient including a crystalline siliceous material with a crystal structure made of at least one ...

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Номер записи: 96
16-01-2020 дата публикации

PROCESS TO CONVERT SYNTHESIS GAS TO OLEFINS USING A BIFUNCTIONAL CHROMIUM/ZINC OXIDE-SAPO-34 CATALYST

Номер: US20200017774A1
Автор: Groenendijk Peter E., MALEK Andrzej, Nieskens Davy L.S., Sandikci Aysegul Ciftci
Принадлежит: Dow Global Technologies LLC

A process for preparing Cto Colefins includes introducing a feed stream having a volumetric ratio of hydrogen to carbon monoxide from greater than 0.5:1 to less than 5:1 into a reactor, and contacting the feed stream with a bifunctional catalyst. The bifunctional catalyst includes a Cr/Zn oxide methanol synthesis component having a Cr to Zn molar ratio from greater than 1.0:1 to less than 2.15:1, and a SAPO-34 silicoaluminophosphate microporous crystalline material. The reactor operates at a temperature ranging from 350° C. to 450° C., and a pressure ranging from 10 bar (1.0 MPa) to 60 bar (6.0 MPa). The process has a cumulative productivity of Cto Colefins greater than 15 kg Cto Colefins/kg catalyst. 1. A process for preparing Cto Colefins , comprising:introducing a feed stream into a reactor, wherein the feed stream comprises hydrogen gas and carbon monoxide gas, such that a volumetric ratio of hydrogen to carbon monoxide ranges from greater than 0.5:1 to less than 5:1; andcontacting the feed stream with a bifunctional catalyst in the reactor, wherein the bifunctional catalyst comprises: (1) Cr/Zn oxide methanol synthesis component having a Cr to Zn molar ratio from greater than 1.0:1 to less than 2.15:1, and (2) a SAPO-34 silicoaluminophosphate microporous crystalline material, (a) a reactor temperature ranging from 350° C. to 450° C.; and', '(b) a pressure ranging from 10 bar (1.0 MPa) to 60 bar (6.0 MPa), and, 'wherein the reactor operates at reaction conditions comprising{'sub': 2', '3', '2', '3, 'wherein the process has a cumulative productivity of Cto Colefins greater than 15 kg Cto Colefins/kg catalyst.'}2. The process for preparing Cto Colefins according to claim 1 , wherein the Cr to Zn molar ratio is at least 1.1:1.3. The process for preparing Cto Colefins according to claim 1 , wherein the Cr to Zn molar ratio is at least 1.5:1.4. The process for preparing Cto Colefins according to claim 1 , wherein the reaction conditions comprises a pressure greater ...

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Номер записи: 97
28-01-2016 дата публикации

SYNTHESIS OF HIGH SILICA ZEOLITE VIA INTERZEOLITE TRANSFORMATION WITHOUT OSDAs

Номер: US20160023912A1
Автор: Goel Sarika, Iglesia Enrique, Zones Stacey Ian
Принадлежит:

Provided is a method for preparing a zeolite having a Si/Al ratio of at least 10 by interzeolite transformation in the absence of an organic structure directing agent. The method is more cost effective and less equipment intensive as it eliminates the costly organic structure directing agent and the waste treatment at the plant. 1. A method of preparing a zeolite having a Si/Al ratio of at least 10 , which comprises:a. providing a first zeolite, andb. converting the first zeolite to a second zeolite having a higher framework density than the first zeolite and a Si/Al ratio of at least 10, in the absence of an organic structure directing agent (OSDA).2. The method of claim 1 , wherein seed crystals of the second zeolite are added to the first zeolite prior to or during the conversion.3. The method of claim 1 , wherein the conversion is achieved by hydrothermal synthesis.4. The method of claim 1 , wherein the conversion is achieved in a basic solution.5. The method of claim 4 , wherein the pH of the basic solution is in the range of from greater than 7 up to 13.6. The method of claim 5 , wherein the pH of the basis solution is in the range of from greater than 7 up to 11.7. The method of claim 3 , wherein the temperature of the conversion is above the crystallization temperature of the first zeolite.8. The method of claim 1 , wherein the temperature of the conversion is in the range of about 130 to about 160° C.9. The method of claim 1 , wherein the Si/Al ratio of the second zeolite is in the range of from 11 to 25.10. The method of claim 1 , wherein the Si/Al ratio of the second zeolite is at least 40.11. The method of claim 1 , wherein the first zeolite comprises BEA or FAU.12. The method of wherein the second zeolite comprises a MFI claim 1 , CHA claim 1 , STF or MTW zeolite.13. The method of claim 1 , wherein the second zeolite comprises ZSM-5 claim 1 , SSZ-35 claim 1 , ZSM-12 or chabazite.14. The method of claim 1 , wherein the first zeolite comprises FAU having ...

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Номер записи: 98
28-01-2016 дата публикации

INTERZEOLITE TRANSFORMATION AND METAL ENCAPSULATION IN THE ABSENCE OF AN SDA

Номер: US20160023913A1
Автор: Goel Sarika, Iglesia Enrique, Zones Stacey Ian
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Provided is a method of encapsulating a metal in a zeolite. The method comprises inserting a metal precursor into a parent zeolite, and then converting the parent zeolite to a zeolite having a higher framework density than the parent zeolite. The conversion is achieved without the need of an organic structure directing agent. 1. Encapsulating a metal in a zeolite by the method of:(a) inserting a metal or metal precursor into a parent zeolite, and(b) converting the parent zeolite to a zeolite having a higher framework density than the parent zeolite, in the absence of an organic structure directing agent (SDA).2. The method of claim 1 , wherein seed crystals of the higher framework density zeolite are added to the parent zeolite prior to or during the conversion.3. The method of claim 1 , wherein the conversion is achieved by hydrothermal synthesis.4. The method of claim 1 , wherein the conversion is achieved in a basic solution.5. The method of claim 3 , wherein the temperature of the conversion is above the crystallization temperature of the parent zeolite.6. The method of claim 1 , wherein the metal precursor in aqueous solution has dimensions such that it cannot be ion-exchanged or impregnated directly into the higher framework density zeolite.7. The method of claim 6 , wherein the metal is Pt claim 6 , Rh claim 6 , Ru or Cu.8. The method of claim 1 , wherein the parent zeolite is BEA or FAU.9. The method of claim 1 , wherein the parent zeolite is a Y zeolite.10. The method of claim 1 , wherein the higher framework density zeolite is ZSM-5 claim 1 , SSZ-35 claim 1 , ZSM-12 or chabazite.11. The method of claim 1 , wherein the parent zeolite is BEA or FAU claim 1 , the higher framework density zeolite is ZSM-5 claim 1 , and the metal is Pt claim 1 , Rh or Ru.12. The method of claim 1 , wherein the parent zeolite comprises a Y zeolite claim 1 , the higher framework zeolite is a chabazite claim 1 , and the metal is Cu.13. The method of claim 1 , wherein the higher ...

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Номер записи: 99
28-01-2016 дата публикации

Molecular Sieve, COK-5, Its Synthesis and Use

Номер: US20160023914A1
Автор: Burton Allen W.
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A molecular sieve having the structure of COK-5 is produced using, as a structure directing agent, at least one diquaternary ammonium compound selected from the group consisting of 1,4-bis(N-propylpyrrolidinium)butane dications, 1,4-bis(N-butylpyrrolidinium)butane dications and 1,5-bis(N-propylpyrrolidinium)pentane dications. 1. A molecular sieve having the structure of COK-5 , comprising in its pores at least one diquaternary ammonium compound selected from the group consisting of 1 ,4-bis(N-propylpyrrolidinium)butane dications , 1 ,4-bis(N-butylpyrrolidinium)butane dications and 1 ,5-bis(N-propylpyrrolidinium)pentane dications.2. The molecular sieve of claim 1 , further comprising crystals having an external surface area as determined by the t-plot method for nitrogen physisorption of about 100 to about 300 m/g.3. The molecular sieve of claim 1 , further comprising crystals having a total surface area as determined by the t-plot method for nitrogen physisorption of about 350 to about 650 m/g.5. The molecular sieve material of claim 4 , the tetravalent element Y comprises silicon and the trivalent element X comprises boron or aluminum.6. A molecular sieve having the structure of COK-5 having an X-ray diffraction pattern with a first composite peak with a maximum at 25.0 (±0.30) degrees 2-theta (2θ) which has an intensity above background of Imaxand which intersects a second composite peak with a maximum at 23.0 (±0.20) degrees 2-theta (2θ) to form a local minimum which has an intensity above background of Imin claim 4 , such that the Imin/Imaxratio is >0.7.7. A molecular sieve having the structure of COK-5 claim 4 , comprising crystals having an external surface area as determined by the t-plot method for nitrogen physisorption of at least 100 m/g and having an X-ray diffraction pattern with a single diffuse composite feature in the 2-theta (2θ) range from 21.5 to 25.5 degrees.8. The molecular sieve of claim 7 , comprising crystals having a total surface area as ...

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Номер записи: 100