以四乙基溴化铵(TEABr)为模板剂合成了支撑β分子筛膜,研究了不同载体类型、预处理条件、合成次数等因素对β分子筛成膜状况的影响.实验发现大孔载体有利于分子筛前驱态凝胶在孔内成核,促进了分子筛晶体与载体的结合强度,使表面晶体能更好地交联生长,成膜效果好;对于不同的预处理过程,采用碱处理(浓度为7 mol/L)时制得的分子筛膜最佳;膜厚度随合成次数的增多而增厚,经二次水热合成,即可得到完全覆盖的β分子筛膜.
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