【摘 要】
：
以聚乙二醇为介孔导向剂,通过凝胶转化制备了介孔ZSM-5沸石。研究表明,在TPA＋/Si O2=0.1时经过9~15 h溶剂挥发制得的凝胶,在160℃处理24 h可得到介孔ZSM-5沸石;挥发时间太短或
【机 构】
：
华东理工大学材料科学与工程学院,中国科学院上海硅酸盐研究所、高性能陶瓷和超微结构国家重点实验室
论文部分内容阅读
以聚乙二醇为介孔导向剂,通过凝胶转化制备了介孔ZSM-5沸石。研究表明,在TPA＋/Si O2=0.1时经过9~15 h溶剂挥发制得的凝胶,在160℃处理24 h可得到介孔ZSM-5沸石;挥发时间太短或太长会得到纯的ZSM-5沸石或介孔材料,说明在凝胶的制备过程中,通过控制溶剂的挥发程度,既可为沸石生长过程提供所需的水分,又能避免沸石晶体形成过程中无定型相的产生,从而在较低的TPA＋浓度下获得介孔ZSM-5沸石。与传统的ZSM-5沸石相比,利用该方法制备的介孔ZSM-5沸石不仅具有微孔/介孔多级孔结构,同
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