公开(公告)号：US20240058801A1

公开(公告)日：2024-02-22

申请号：US18269906

申请日：2022-01-24

申请人： THE UNIVERSITY OF TOKYO ,  Mitsui Mining & Smelting Co., Ltd.

发明人： Tatsuya OKUBO ,  Toru WAKIHARA ,  Kenta IYOKI ,  Junki TOMITA ,  Katsuhiko HAYASHI ,  Akihiro KANNO

IPC分类号： B01J29/70 ,  B01J37/04 ,  B01J37/08 ,  B01J35/10 ,  B01J20/18

CPC分类号： B01J29/7007 ,  B01J37/04 ,  B01J37/08 ,  B01J35/1038 ,  B01J20/186

摘要： Provided is a method for producing a beta zeolite, the method including bringing a beta zeolite parent powder synthesized without using an organic structure-directing agent into contact with an alkaline aqueous solution having a pH of 12 or higher. The liquid temperature of the alkaline aqueous solution is preferably se to 40° C. or above and 100° C. or below. The ratio of the parent powder to the alkaline aqueous solution is preferably set to 10 g/L or greater and 1000 g/L or less. The contact time is preferably 0.5 hours or longer and 48 hours or shorter. The SiO2/Al2O3 molar ratio is preferably s16 or less.

公开(公告)号：US20210031175A1

公开(公告)日：2021-02-04

申请号：US16766944

申请日：2018-12-20

申请人： BASF SE ,  The University of Tokyo

发明人： Andrei-Nicolae PARVULESCU ,  Ulrich MUELLER ,  Kenta IYOKI ,  Watcharop CHAIKITTISILP ,  Torn WAKIHARA

IPC分类号： B01J29/70 ,  C01B39/48 ,  B01J35/10 ,  B01J37/00 ,  B01J37/04 ,  B01J37/10 ,  C07C1/04 ,  B01D53/94 ,  F01N3/28 ,  F01N3/20 ,  F01N3/08

摘要： A batch process for preparing a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H, comprising (i) providing a seeding material comprising a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H; (ii) preparing a mixture comprising a source of Si, a source of Al, a seeding material provided in (i), a CHA framework structure directing agent comprising a cycloalkylammonium compound, and water, wherein the cycloalkylammonium compound is a compound comprising a cation R1R2R3R4N+ wherein R1, R2, R3 are, independently from one another, an alkyl residue having from 1 to 6 carbon atoms, and R4 is a 5- to 8-membered cycloalkyl residue, wherein in mixture, the molar ratio of water relative to Si comprised in the source of Si and in the seeding material, calculated as SiO2, is in the range of from 5:1 to 15:1, wherein the mixture, the molar ratio of sodium, calculated as Na2O, relative to Si comprised in the source of Si and in the seeding material, calculated as SiO2, is in the range of from 0:1 to 0.1:1; (iii) heating the mixture prepared in (ii) in its liquid state to a temperature of the mixture in the range of from 50 to 90° C. and keeping the liquid mixture at a temperature in this range for 5 to 100 h; (iv) heating the heated mixture of (iii) to a temperature of the mixture in the range of from 190 to 230° C. in a crystallization vessel and keeping the mixture at a temperature in this range under autogenous pressure in the crystallization vessel for 0.5 to 10 h, obtaining a solid material comprising a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H, suspended in its mother liquor.

公开(公告)号：US20220097033A1

公开(公告)日：2022-03-31

申请号：US17309783

申请日：2019-12-18

申请人： BASF SE ,  The University of Tokyo

发明人： Hannah SCHREYER ,  Andrei-Nicolae Parvulescu ,  Ulrich MUELLER ,  Karsten SEIDEL ,  Tatsuya OKUBO ,  Toru WAKIHARA ,  Kenta IYOKI ,  Watcharop CHAIKITTISILP

IPC分类号： B01J29/76 ,  C01B39/48 ,  B01J37/08 ,  B01J37/30 ,  B01J37/02 ,  B01J35/10

摘要： The present disclosure relates to a process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO2 and X2O3, wherein the process comprises: (1) providing a mixture comprising one or more sources for YO2, one or more sources for X2O3, one or more tetraalkylammonium cation R1R2R3R4N+-containing compounds, and one or more tetraalkylammonium cation R5R6R7R8N+-containing compounds as structure directing agent; (2) crystallizing the mixture to obtain a zeolitic material having a CHA-type framework structure; wherein Y is a tetravalent element and X is a trivalent element, wherein R1, R2, R3, R5, R6, and R7 independently from one another stand for alkyl, wherein R4 stands for CnH2nOH with n=1 to 6, and wherein R8 stands for cycloalkyl.