Preparation method of SAPO-34 molecular sieve membrane

一种sapo-34分子筛膜的制备方法

Abstract

本发明提供了一种SAPO-34分子筛膜的制备方法。其特征是采用特定沸石分子筛为硅源,在多孔陶瓷支撑体表面形成了连续致密的SAPO-34分子筛薄膜即以结晶态沸石分子筛为硅源于多孔陶瓷支撑体上生长一层SAPO-34分子筛膜,该沸石分子筛具有与SAPO-34相同的结构单元,为SAPO-34分子筛晶化提供了晶核,缩短了膜合成时间,且SAPO-34膜层中硅含量可在较大范围内调整。合成的膜对CO2具有优选选择性,在分离CO2/CH4混合体系时具有高的渗透通量和分离选择性。
The invention provides a preparation method of a SAPO-34 molecular sieve membrane. The method is characterized in that a specific zeolite molecular sieve is employed as a silicon source. A continuous compact SAPO-34 molecular sieve thin film is formed on a surface of a porous ceramic supporting body, namely, a layer of the SAPO-34 molecular sieve membrane is grown on the porous ceramic supporting body with a crystalline state zeolite molecular sieve being the silicon source. A structure unit of the molecular sieve is same as that of SAPO-34. Crystal nucleus are provided for crystallization of a SAPO-34 molecular sieve and a synthesis time of the membrane is shortened. In addition, the content of silicon in the SAPO-34 molecular sieve membrane can be adjusted within a large range. The membrane has a preferable selectivity on CO2 and a high permeation flux and separation selectivity when being used for separating mixing systems of CO2/CH4.

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    CN-103896300-AJuly 02, 2014中国科学院上海高等研究院高性能sapo-34分子筛膜的制备方法
    CN-103922361-AJuly 16, 2014江西师范大学Preparation method of SAPO-17 molecular sieves
    CN-1314587-CMay 09, 2007南京工业大学Process for prepareing SAPO-34 molecular siever
    CN-1693202-ANovember 09, 2005南京工业大学一种sapo-34分子筛的制备方法
    WO-2010011420-A1January 28, 2010Exxonmobil Chemical Patents Inc.Synthèse de tamis moléculaires contenant de la chabazite et leur utilisation pour la conversion de composés oxygénés en oléfines

NO-Patent Citations (1)

    Title
    ERIC W. PING等: "Seeded-gel synthesis of SAPO-34 single channel and monolith membranes,for CO2/CH4 separations", 《JOURNAL OF MEMBRANE SCIENCE》, vol. 415416, 5 June 2012 (2012-06-05), XP055058051, DOI: doi:10.1016/j.memsci.2012.05.068

Cited By (2)

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    CN-105251374-AJanuary 20, 2016南京工业大学Preparation method of nanoscale surface defect crystal seed induced SAPO-34 molecular sieve membrane
    CN-106943889-AJuly 14, 2017郝至臻一种片式膜的制备方法