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3 D Ordered Macroporous Alumina–Carbon Nanocomposite Supported Platinum Nanoparticles as Effective and Reusable Catalysts for Asymmetric Hydrogenation
Author(s) -
Yang Ting,
Lou LanLan,
Yu Wenjun,
Feng Yajun,
Li Hao,
Yu Kai,
Liu Shuangxi
Publication year - 2017
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.201601179
Subject(s) - catalysis , nanomaterial based catalyst , cinchonidine , materials science , nanocomposite , platinum nanoparticles , chemical engineering , nanoparticle , carbon fibers , asymmetric hydrogenation , platinum , composite number , sorption , organic chemistry , nanotechnology , chemistry , enantioselective synthesis , composite material , adsorption , engineering
The three‐dimensionally ordered macroporous alumina‐carbon composite materials were firstly prepared through a surfactant‐assisted colloidal crystal template method and applied to support Pt nanoparticles. The results of SEM, XRD, TEM, and N 2 sorption analyses revealed that these composite materials possessed highly ordered macroporous structures with meso‐ and micropores within the skeletons of macropores and that the Pt nanoparticles were well dispersed on these materials with a very narrow size distribution. These prepared Pt nanocatalysts were evaluated in the asymmetric hydrogenation of ethyl pyruvate after chiral modification with cinchonidine. Excellent catalytic activity and enantioselectivity were achieved. More importantly, these catalysts exhibited extraordinary stability and reusability during the reaction and could be reused at least 26 times without significant loss in catalytic activity and enantioselectivity.