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AEI ZEOLITE SYNTHESIS

机译:生物学组成大学

摘要

FIELD: chemical or physical processes, for example catalysis.;SUBSTANCE: invention relates to zeolites synthesis. Proposed synthesis method comprises formation of a reaction mixture for zeolite AEI, containing mother liquor or a part thereof from the synthesis process AEI, in which the mother liquor or part thereof comprises substance that directs structure AEI. Structure directing agent is a cation of N,N-dimethyl-3,5-dimethylpiperidine. Implemented reacting the mixture under crystallization conditions to form a batch of zeolite crystals having an AEI framework. Mother liquor or part of it is recycled. To achieve high total relative yield based on the dioxide process of zeolite synthesis AEI includes: 1) preparing a mixture comprising (a) at least one source of aluminum oxide, (b) at least one source of silicon dioxide, (c), at least one ionic hydroxide source, and (d) substance that directs the AEI structure (SDA), the substance directing the structure being a cation of N,N-dimethyl-3,5-dimethylpiperidine; and 2) the reaction of the mixture under crystallization conditions to form zeolite crystals having an AEI framework with a silica ratio to aluminum oxide (SAR) from 8 up to 50, and mother liquor.;EFFECT: invention provides a total relative yield based on silicon dioxide of at least 60 percent.;19 cl, 2 tbl, 2 dwg
机译:技术领域:本发明涉及沸石的合成。提议的合成方法包括形成来自合成过程AEI的包含母液或其一部分的用于沸石AEI的反应混合物,其中母液或其部分包含指导结构AEI的物质。结构导向剂是N,N-二甲基-3,5-二甲基哌啶的阳离子。使混合物在结晶条件下反应以形成一批具有AEI骨架的沸石晶体。母液或其一部分被回收。为了基于沸石合成的二氧化碳方法获得较高的总相对产率,AEI包括:1)在以下温度下制备混合物:(a)至少一种氧化铝源;(b)至少一种二氧化硅源;(c)至少一种离子氢氧化物源,和(d)指导AEI结构(SDA)的物质,该指导结构的物质是N,N-二甲基-3,5-二甲基哌啶的阳离子; 2)使混合物在结晶条件下反应以形成具有AEI骨架的沸石晶体和母液,所述沸石具有相对于氧化铝(SAR)的二氧化硅比为8至50的AEI骨架;效果:本发明提供了基于二氧化硅含量至少为60%.; 19 cl,2 tbl,2 dwg

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