高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (8): 1240.

• 论文 • 上一篇    下一篇

MCM-41负载SO42-/ZrO2超强酸的性能研究

雷霆, 华伟明, 唐颐, 乐英红, 高滋   

  1. 复旦大学化学系, 上海 200433
  • 收稿日期:1999-10-25 出版日期:2000-08-24 发布日期:2000-08-24
  • 通讯作者: 高　滋(1933年生),女,教授,博士生导师,从事酸碱催化研究.E-mail:zigao@fudan.edu.cn E-mail:zigao@fudan.edu.cn
  • 基金资助:

    国家基础研究重大项目资助

Studies on MCM-41 Supported SO42-/ZrO2 Solid Superacid Catalysts

LEI Ting, HUA Wei-Ming, TANG Yi, YUE Ying-Hong, GAO Zi   

  1. Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:1999-10-25 Online:2000-08-24 Published:2000-08-24

PDF (PC)

摘要： 采用浸渍-焙烧法制备了MCM-41负载SO42-/ZrO2(SZ)超强酸催化剂,并考察了其织构性质及酸性的变化规律.结果发现,过高的SZ负载量会引起MCM-41介孔结构的破坏,而负载量过低则不能产生超强酸性.适宜的负载量为40%左右.样品的超强酸性随其ZrO2含量的增加而递增.SZ的引入同时也增加了样品的中强酸酸性和弱酸酸性,样品酸性可通过改变SZ负载量进行调节.

关键词: SO42-/ZrO2, MCM-41, 负载超强酸

Abstract: Aseries of new superacid catalysts MCM-41 supported SO42-/ZrO2(SZ) were prepared first by an impregnation calcination method. The variation roles of their texture constructions and acid properties were investigated in detail. It was shown that, a high amount of ZrO2 could result in the damage of the pore system of MCM-41, however, superacid sites could not formed under a low amount of SZon MCM-41. The proper amount of SZis about 40%. The superacidities of samples were increased with the increas|ing of ZrO2 contents. Both medium strong acidities and weak acidities of samples were enhanced with the introducing of SZ. The acidities of samples can be adjusted by changing the amount of SZon MCM-41. This may be valuable in designing catalysts for the cracking reaction of large molecule hydrocarbon.

Key words: SO42-/ZrO2, MCM-41, Supported superacid

中图分类号: 

TrendMD: