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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
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.
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公开(公告)号：US20240058801A1
公开(公告)日：2024-02-22
申请号：US18269906
申请日：2022-01-24
发明人： Tatsuya OKUBO , Toru WAKIHARA , Kenta IYOKI , Junki TOMITA , Katsuhiko HAYASHI , Akihiro KANNO
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.
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