Sn掺杂量对Pt/Sn-MFI催化剂的丙烷脱氢性能影响  

Influence of Sn-doped amounts on propane dehydrogenation over Pt/Sn-MFI catalysts

作　　者：刘丹丹 姜月 范晓强 赵震 Liu Dandan;Jiang Yue;Fan Xiaoqiang;Zhao Zhen(Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering, Shenyang Normal University,Shenyang 110034,Liaoning,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]沈阳师范大学化学化工学院,能源与环境催化研究所,辽宁沈阳110034 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《工业催化》2018年第11期61-66,共6页Industrial Catalysis

基　　金：国家自然科学基金青年基金(21603148);国家自然基金重大计划培育项目(91545117);辽宁省教育厅一般项目(L201607);沈阳师范大学优秀人才支持计划(222-51300409);沈阳师范大学博士启动项目(BS201619);辽宁省高校重大科技平台“能源与环境催化工程技术研究中心”开发课题

摘　　要：随着对丙烯需求的日渐增加,由丙烷催化脱氢制丙烯来实现对丙烯的增产,已成为增产丙烯的重要手段之一。利用水热法制备一系列不同Sn掺杂量的Sn-MFI载体,采用等体积浸渍法制备相同Pt负载量的Pt/Sn-MFI催化剂,通过XRD、N2吸附-脱附、FT-IR和H2-TPR等表征考察不同Sn掺杂量的催化剂对丙烷催化脱氢性能的影响。结果表明,Pt/Sn1. 3%-MFI催化剂具有最高的催化丙烷脱氢活性和稳定性,丙烷初始转化率为43. 3%,丙烯选择性为98. 9%。反应360 min后,丙烷转化率为25. 1%,选择性保持不变。With the increasing demand for propylene,production of propylene by catalytic dehydrogenation of propane has become one of the important means. In this work,a series of Sn-MFI supports with different Sn-doped amounts were prepared by hydrothermal method. Pt/Sn-MFI catalysts with the same Pt loading were prepared by impregnation. Catalysts were characterized by XRD,N2adsorption-desorption,FT-IR and so on. Influences of Sn-doped contents on propane dehydrogenation were also investigated.Results showed that Pt/Sn1. 3%-MFI catalyst had the highest activity and stability for dehydrogenation of propane among the as-prepared catalysts. Initial conversion of propane was 43. 3% and selectivity of propylene was 98. 9%. After 360 min of reaction,conversion of propane decreased to 25. 1% and selectivity unchanged.

关 键 词：催化化学 丙烯 丙烷脱氢 Pt/Sn-MFI催化剂 

分 类 号：O643.36[理学—物理化学] TQ221.212[理学—化学]