期刊
APPLIED CATALYSIS A-GENERAL
卷 377, 期 1-2, 页码 114-120出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2010.01.024
关键词
SBA-15; Rh-P complex; Hydroformylation; Olefin; Aldol condensation
资金
- National Natural Science Foundation of China [20673064]
- Higher Education of Ministry of Education of China [2007003108]
- Laboratory Fund of Tsinghua University
RhCl3 was immobilized to diphenylphosphinopropyl (-PrPPh2)-modified mesoporous silica SBA-15 through a multi-step-assembly process. The prepared catalyst was characterized with reference to bulky and surface properties by X-ray diffraction (XRD), infrared spectroscopy (FT-IR), isothermal nitrogen sorption analysis and X-ray photoelectron spectroscopy (XPS). The metal content was determined by inductive coupling plasma-atomic emission spectroscopy (ICP-AES). The prepared rhodium-immobilized catalyst was employed in hydroformylation of several higher olefins of different lengths (C-6, C-8, and C-10), different C=C bond positions (terminal or internal) or different structures (linear or branched). The substrate influences on the activity and recycling stability of the immobilized catalyst were investigated and are discussed. Shorter linear olefin substrates were more easily activated with higher catalyst specific activity, while the catalyst showed recycling stability in hydroformylation of longer and branched olefin substrates. For comparison, PPh3 was externally added to immobilize RhCl3 to -PrPPh2-modified SBA-15. The immobilized catalyst so prepared showed a more flexible immobilizing structure and revealed a promoted turnover number of substrates. (C ) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据