Cyclopentadienyl-functionalized mesoporous MCM-41 catalysts for the transesterification of dimethyl oxalate with phenol
- 作者：Yan Liu ; Guoming Zhao ; Gang Liu ; Shujie Wu ; Guohua Chen ; Wenxiang Zhang ; Huiyan Sun ; Mingjun Jia
- 关键词：Transesterification ; Dimethyl oxalate ; Cyclopentadienyl-functionalized material
- 刊名：Catalysis Communications
- 出版年：2008
- 期刊代码：12_15667367
- 类别：ce
- 出版时间：10 June 2008
- 卷：9
- 期：10
- 页码：2022-2025
- 文件大小：176 K
摘要
Two kinds of hybrid inorganic–organic catalysts (denoted as Cp′-MCM-41 and Cp″-MCM-41) are prepared by grafting methylcyclopentadienyl (Cp′) or pentamethylcyclopentadienyl (Cp″) group onto the surface of mesoporous MCM-41. Such cyclopentadienyl-functionalized materials are active for the transesterification of dimethyl oxalate (DMO) with phenol. Under test conditions, Cp″-MCM-41 gives higher conversion of DMO and selectivity of diphenyl oxalate (DPO) than Cp′-MCM-41, and this might be assigned to the relatively strong Lewis basicity of Cp″ group.