标题：Characterization and catalytic performance of PdSAPO-5 molecular sieve
作者：Xiao, TC; An, LD; Wang, HL
作者机构：[Xiao, TC; An, LD; Wang, HL]CHINESE ACAD SCI,LANZHOU INST CHEM PHYS,LANZHOU 730000,PEOPLES R CHINA.;[Xiao, TC; An, LD; Wang, HL] DALIAN INST 更多
会议名称：International Zeolite Symposium
会议日期：OCT 15-20, 1995
来源：ZEOLITES: A REFINED TOOL FOR DESIGNING CATALYTIC SITES
关键词：PdSAPO-5 molecular sieve; palladium dispersion; MTO reaction
摘要：A palladium catalyst supported by SAPO-5 molecular sieve was obtained by direct cocrystallization from a SAPO-5 gel mixture and a palladium salt, which has been compared with a Pd/SAPO-5 catalyst formed by conventional impregnation method. The PdSAPO-5 catalyst was found to have the characteristics of high and even dispersion of palladium, modification of the acidic sites on SAPO-5 by the introduced Pd, and higher activity and selectivity for methanol conversion. A catalytic site comprising a Bronsted acid site and an adjacent Pd is proposed.