公开(公告)号：US10676369B2

公开(公告)日：2020-06-09

申请号：US16509642

申请日：2019-07-12

申请人： TOSOH CORPORATION

发明人： Tomoya Ishikawa ,  Hidekazu Aoyama ,  Takayoshi Mishima

IPC分类号： C01B39/04 ,  C01B39/48 ,  B01J29/70

摘要： Provided is a production method by which an AEI zeolite is obtained without inducing a structural transformation in a crystalline aluminosilicate having a Y-structure and without using fluorine or phosphorus, the method including a crystallization step of crystallizing a composition containing an alumina source, a silica source, a structure directing aunt, a sodium source, and water, a weight proportion of crystalline aluminosilicate relative to a total weight of the alumina source and the silica source being from 0 wt. % to 10 wt. %, and the crystallization step satisfying at least one of the following conditions: a molar ratio of hydroxide ion to silica in the composition is 0.45 or greater, the composition contains a cation represented by (CH3)3RN+ (R represents an alkyl group having from 1 to 4 carbons, and the alkyl group may contain at least one substituent), and the crystallization time is 80 hours or longer.

公开(公告)号：US12023659B2

公开(公告)日：2024-07-02

申请号：US17552941

申请日：2021-12-16

申请人： TOSOH CORPORATION

发明人： Yoshitaka Yamasaki ,  Tomoya Ishikawa ,  Keita Nakao ,  Takuya Okada ,  Yusuke Naraki

IPC分类号： B01J29/70 ,  B01J29/76

CPC分类号： B01J29/7015 ,  B01J29/763

摘要： CHA-type zeolite in which the molar ratio of silica to alumina is less than 13, and the content of sodium is 100 ppm or more and 2000 ppm or less is provided. Such a CHA-type zeolite is obtained by a manufacturing method including obtaining a crystallized product by crystallizing a composition which includes a structure-directing agent source containing at least N,N,N-trialkylcyclohexylammonium cation, an alumina source, a silica source, a sodium source, and water and in which the molar ratio of silica to alumina is 20 or less and in which the molar ratio of potassium to sodium is less than 0.05, removing N,N,N-trialkylcyclohexylammonium cation from the crystallized product, and contacting the crystallized product with an ammonium-salt-containing solution having an ammonium concentration of 1 mass percent or more.

公开(公告)号：US10556802B2

公开(公告)日：2020-02-11

申请号：US15752460

申请日：2016-08-26

申请人： TOSOH CORPORATION

发明人： Yasuyuki Takamitsu ,  Tomoya Ishikawa ,  Mitsuaki Yoshimitsu

IPC分类号： C01B39/48 ,  B01J29/70 ,  C01B39/02

摘要： 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.

公开(公告)号：US10513439B2

公开(公告)日：2019-12-24

申请号：US15751036

申请日：2016-08-09

申请人： TOSOH CORPORATION

发明人： Tomoya Ishikawa ,  Hidekazu Aoyama ,  Mitsuaki Yoshimitsu ,  Seiji Maehama ,  Takayoshi Mishima ,  Yasuyuki Takamitsu

IPC分类号： C01B39/48 ,  B01J29/70 ,  C01B39/04

摘要： Provided is a production method by which an AEI zeolite is obtained without inducing a structural transformation in a crystalline aluminosilicate having a Y-structure and without using fluorine or phosphorus, the method including a crystallization step of crystallizing a composition containing an alumina source, a silica source, a structure directing agent, a sodium source, and water, a weight proportion of crystalline aluminosilicate relative to a total weight of the alumina source and the silica source being from 0 wt. % to 10 wt. %, and the crystallization step satisfying at least one of the following conditions: a molar ratio of hydroxide ion to silica in the composition is 0.45 or greater, the composition contains a cation represented by (CH3)3RN+ (R represents an alkyl group having from 1 to 4 carbons, and the alkyl group may contain at least one substituent), and the crystallization time is 80 hours or longer.