载体对烯烃歧化制丙烯的影响  

Effect of support on catalytic performance for metathesis of butene to propene

作　　者：华德润[1,2] 陈胜利[2] 周政[2,3] 陈爱诚 刘红波[1] 黄庆 卢新宁[1] 

机构地区：[1]赣南师范学院化学化工学院,江西赣州341000 [2]中国石油大学北京重质油国家重点实验室,北京102249 [3]中原石油天然气处理厂,河南濮阳457001

出　　处：《燃料化学学报》2014年第7期865-869,共5页Journal of Fuel Chemistry and Technology

摘　　要：以Si02（SBA-15、MCM-48和SiO2）和TiO2-SiO2（MTS-9）介孔分子筛为载体负载8％WO3合成钨基催化剂，研究载体对丁烯歧化制丙烯性能的影响以及载体对丁烯转化率和丙烯选择性的影响。以SBA-15、MCM-48和SiO2为载体时，催化剂的丁烯转化率在30％-37％；以MTS-9为催化剂载体时，丁烯的转化率高达到37％-42％。对所有使用的催化剂进行多种技术表征。结果表明，活性组分在各种载体上的分散度不同，载体MTS-9具有更好的分散能力，表面活性物种数量最多，催化剂WO3／MTS-9的歧化性能最佳。The catalysts with SBA-15,MCM-48,SiO2,and MTS-9 as supports were synthesized with 8%WO3,and their catalytic performance for metathesis of butene to propene were carried out.The conversion of butene is 30%-37%on the catalysts with SBA-15,MCM-48,and SiO2as supports,and that of butene is 37%-42%on WO3/MTS-9 catalyst.The catalyst characterization results show that the catalytic activities depend on the acidic numbers of catalysts prepared and the distribution of tungstens on the supports used.As a result,the performance of 8%WO3/MTS-9 catalyst for the titled reaction is best.

关 键 词：丙烯 歧化 载体 三氧化钨 

分 类 号：O643.3[理学—物理化学]