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SBA‐15‐Supported Metal Silicides Prepared by Chemical Vapor Deposition as Efficient Catalysts Towards the Semihydrogenation of Phenylacetylene
Author(s) -
Yang Kaixuan,
Chen Xiao,
Wang Lei,
Zhang Liangliang,
Jin Shaohua,
Liang Changhai
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.201601653
Subject(s) - phenylacetylene , diphenylacetylene , silicide , catalysis , chemical vapor deposition , materials science , selectivity , metal , noble metal , chemical engineering , inorganic chemistry , nanotechnology , chemistry , organic chemistry , metallurgy , layer (electronics) , engineering
Metal silicide (Pd 2 Si, Ni 2 Si, CoSi, Fe x Si, and Cu 6.69 Si) catalysts supported by SBA‐15 have been prepared by a chemical vapor deposition method under a H 2 atmosphere using (CH 3 ) 2 SiCl 2 as the Si source. Of the SBA‐15‐supported metal silicide catalysts, Ni 2 Si/SBA‐15 presented a modest activity, notable selectivity to styrene (>90 %), and high stability with respect to the selective hydrogenation of phenylacetylene, which is attributed to the active‐site isolation and electron transfer in the silicide. Furthermore, Ni 2 Si/SBA‐15 also has a high selectivity to diphenylacetylene and 1,4‐butynediol, which demonstrates that Ni 2 Si/SBA‐15 is a promising, low‐cost catalyst alternative to noble‐metal catalysts as a selective hydrogenation catalyst.