【摘要】 通过浸渍法制得微球硅胶负载TS-1分子筛催化剂.用XRDI、R和SEM技术对催化剂进行表征.对催化剂催化苯羟基化的工艺进行研究.结果表明,TS-1分子筛能够很好负载于硅胶表面.在苯和H2O2初始量分别为0.5 mol和0.1 mol、催化剂加入量为8g、反应温度60℃下,经过3h的反应,苯的转化率达到10.32%,酚选择性超过99%.催化剂易于回收,经多次重复使用后,苯转化率为9.42%,酚选择性为94.89%.更多还原

【Abstract】 The catalysts of TS-1 loaded on silica gel were prepared after direct crystallization and calcination of the microspheric silica gel soaked in the TS-1 synthetic solution.The catalysts were characterized by XRD,IR and SEM.The hydroxylation of benezen catalyzed by the catalyst has been study.The result showed that TS-1 molecular sieve was loaded on the surface of silica gel very well.On the condition of the initial material content of benzene 0.5mol and hydrogen peroxide 0.1mol,catalyst 8g,the reaction temperature of 60℃ and the reaction time 3h,the conversation of benzene was 10.32% and the selectivity of phenol exceeded 99%.The catalysts were easy to be recycled.After recycling of some times,the conversation of benzene was 9.42% and the selectivity of phenol was 94.89%.更多还原