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Pt Nanoparticles Supported on Highly Dispersed Alumina Coated inside SBA‐15 for Enantioselective Hydrogenation
Author(s) -
Wang Hongna,
Li Xiaohong,
Wang Yi Meng,
Wu Peng
Publication year - 2010
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201000081
Subject(s) - mesoporous material , catalysis , enantioselective synthesis , materials science , nanoparticle , chemical engineering , sorption , x ray photoelectron spectroscopy , organic chemistry , nanotechnology , chemistry , adsorption , engineering
A series of Al 2 O 3 @SBA‐15 composites with different alumina loadings have been prepared using a solid‐state grinding method. Various techniques, such as X‐ray diffraction, N 2 sorption, FT‐IR spectroscopy, and NMR spectroscopy, are used to characterize their structures and acidity. The Al 2 O 3 @SBA‐15 composites retain the mesostructure of the SBA‐15 host and the alumina is highly dispersed and uniformly coated inside the mesopores. The Al 2 O 3 @SBA‐15 composites serve as remarkable supports for Pt nanoparticles, which can be used as catalysts in the enantioselective hydrogenation of ethyl pyruvate. Both the Brønsted acid sites that originate from the interface of Al 2 O 3 and SBA‐15 in the Al 2 O 3 @SBA‐15 composites and the appropriate interaction of Pt nanoparticles with alumina coated inside the mesopores of SBA‐15 can improve the catalytic behavior of Pt/Al 2 O 3 @SBA‐15 catalysts.