采用共合成法制备了一系列不同硅氨基含量的介孔氧化硅SBA-15,在其孔道中引入Keggin型钨磷酸,且其含量随硅氨基含量的增加而增加.考察了不同处理温度下杂多酸的热稳定性,发现焙烧后钨物种能在SBA-15孔道内高度分散.以H2O2为氧化剂,研究了该催化剂在环己烯环氧化反应中的催化活性,考察了杂多酸负载量和焙烧温度对催化活性的影响.结果表明,400℃处理后的钨磷酸催化剂具有高的反应活性和重复使用性能.
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