ZSM-5分子筛膜/多孔SiSiC陶瓷复合孔结构微反应器的制备

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以生物形态多孔SiSiC陶瓷为载体,采用原位水热法在多孔陶瓷微孔道内壁形成了一层2-5μm厚的b轴取向生长的ZSM-5分子筛膜.利用XRD、SEM-EDX、BET分析对复合材料的相组成、微观结构和比表面积进行了表征,研究了水热晶化时间、载体预处理对原位合成分子筛膜的影响.结果表明,随晶化时间从5h增加到15h,从不连续的单层膜演变到-5μm厚的b轴取向的连续致密多层膜,该膜层是由粒径在1μm左右的ZSM-5分子筛颗粒堆积交联而成.载体表面Si OH浓度越高,分子筛膜和载体的结合力越强,但是较难控制分子筛膜
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