【摘要】 以X、Y、USY、丝光沸石、5A和ZSM-5等不同分子筛为载体，在其表面生长了CuAl-LDH层状氢氧化物，浸渍Cs后焙烧，制备一系列具有CuAl-LDO二维层状氧化物的Cs/CuAl-LDO@分子筛催化剂。利用XRD、N₂吸附-脱附、SEM、NH₃-TPD和CO₂-TPD等表征催化剂的结构和相貌，评价催化剂对甲苯侧链甲醇烷基化的反应性能。结果表明，不同分子筛为载体催化剂的相貌、酸碱中心和甲苯侧链烷基化反应性能均有一定差别，其中X分子筛为载体的Cs/CuAl-LDO@X催化剂对甲苯侧链烷基化反应具有最好的催化性能，在甲苯转化率为4.14%时，苯乙烯选择性为51.10%,侧链烷基化选择性达91.79%。更多还原

【Abstract】 A series of Cs/CuAl-LDO@zeolite catalysts were prepared by using X,Y,USY,mordenite, 5A and ZSM-5 zeolites as supports.The CuAl-LDH were grown on the surfaces of the zeolites, and then impregnated with Cs and calcined.The structure and appearance of the catalysts were characterized by XRD,N₂ adsorption-desorption, SEM,NH₃-TPD and CO₂-TPD,and the catalytic performance of the catalysts for the side-chain alkylation of toluene with methanol was evaluated.The results showed that the appearance, specific surface area, acid-base sites and the performance of the side-chain alkylation of toluene over different zeolite-supported catalysts are different to some extent.The Cs/CuAl-LDO@X catalyst supported by X-zeolite had the best catalytic performance.When toluene conversion is 4.14%,the styrene selectivity is 51.10%,and the total selectivity of styrene and ethylbenzene is 91.79%.更多还原