期刊
CURRENT APPLIED PHYSICS
卷 18, 期 12, 页码 1480-1485出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2018.09.001
关键词
Carbon-silica materials; Mesoporous; Pt nanoparticles; Asymmetric hydrogenation
资金
- National Natural Science Foundation of China [51603077, 21603077]
- Marine High-Tech Industry Development Project of Fujian Province [(2016)17]
- Promotion Program for Young and Middle-Aged Teacher in Science and Technology Research of Huaqiao University [ZQN-PY516]
- Subsidized Project for Postgraduates' Innovative Fund in Scientific Research of Huaqiao University
Mesoporous carbon-silica composites supported Pt nanoparticle catalysts (Pt/MCS) were firstly applied to the heterogeneous asymmetric hydrogenation of ethyl 2-oxo-4-phenylbutyrate (EOPB). A series of different silica contents were investigated in the fabrication of this mesoporous material. When the volume of added tetraethyl orthosilicate (TEOS) during the preparation of composites is 8 mL, Pt/MCS-8 holds carbon and silica as the main components and possesses relatively strong acidity, mesoporous structures with micropores, appropriate Pt nanoparticle size and high dispersibility showing by XRD, XPS, TPD, N-2 sorption and TEM. These properties cause its good catalytic performance in the heterogeneous asymmetric hydrogenation of EOPB with the enantiomeric excess value and conversion up to 85.6% and 97.8%, respectively.
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