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Ultrasmall Platinum Nanoparticles Supported Inside the Nanospaces of Periodic Mesoporous Organosilica with an Imidazolium Network: An Efficient Catalyst for the Aerobic Oxidation of Unactivated Alcohols in Water
Author(s) -
Karimi Babak,
Naderi Zahra,
Khorasani Mojtaba,
Mirzaei Hamid M.,
Vali Hojatollah
Publication year - 2016
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.201501229
Subject(s) - catalysis , alcohol oxidation , mesoporous material , mesoporous organosilica , nanoparticle , platinum nanoparticles , steric effects , chemistry , platinum , primary (astronomy) , oxygen , chemical engineering , materials science , organic chemistry , nanotechnology , mesoporous silica , engineering , physics , astronomy
The imidazolium group inside the wall of a periodic mesoporous organosilica provides an excellent environment for the stabilization of ultrasmall Pt nanoparticles (<1.5 nm), and this allowed the formation of a catalyst system (i.e., Pt (NP) @PMO‐IL) with significant activity and recyclability in the selective aerobic oxidation of various alcohols in water at ambient pressure of oxygen. In particular, the catalyst exhibited high activity in the oxidation of unactivated primary alcohols and sterically encumbered secondary aliphatic alcohols, which remain challenging substrates for many catalytic aerobic protocols.