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Mesoporous Silica Nanoparticle‐Stabilized and Manganese‐Modified Rhodium Nanoparticles as Catalysts for Highly Selective Synthesis of Ethanol and Acetaldehyde from Syngas
Author(s) -
Huang Yulin,
Deng Weihua,
Guo Enruo,
Chung PoWen,
Chen Senniang,
Trewyn Brian G.,
Brown Robert C.,
Lin Victor S.Y.
Publication year - 2012
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.201100460
Subject(s) - rhodium , nanoparticle , acetaldehyde , catalysis , mesoporous silica , mesoporous material , syngas , selectivity , chemistry , oxygenate , manganese , methanol , inorganic chemistry , ethanol , organic chemistry , materials science , nanotechnology
Well‐defined and monodispersed rhodium nanoparticles as small as approximately 2 nm were encapsulated in situ and stabilized in a mesoporous silica nanoparticle (MSN) framework during the synthesis of the mesoporous material. Although both the activity and selectivity of MSN‐encapsulated rhodium nanoparticles in CO hydrogenation could be improved by the addition of manganese oxide as expected, the carbon selectivity for C2 oxygenates (including ethanol and acetaldehyde) was unprecedentedly high at 74.5 % with a very small amount of methanol produced if rhodium nanoparticles were modified by manganese oxide with very close interaction.