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Selective Reduction of CO 2 with Silanes over Platinum Nanoparticles Immobilised on a Polymeric Monolithic Support under Ambient Conditions
Author(s) -
Taori Vijay P.,
Bandari Rajendar,
Buchmeiser Michael R.
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201304845
Subject(s) - silanes , diethylamine , catalysis , chemistry , hydrolysis , yield (engineering) , nanoparticle , hydrogen , platinum , platinum nanoparticles , turnover number , heterogeneous catalysis , ligand (biochemistry) , chemical engineering , nuclear chemistry , organic chemistry , materials science , silane , receptor , biochemistry , engineering , metallurgy
Here, we demonstrate the use of Pt 0 nanoparticles immobilised on a polymeric monolithic support as a ligand‐free heterogeneous catalytic system for the reduction of 13 CO 2 at room temperature and atmospheric pressure. The described system effectively reduces 13 CO 2 with dihydrosilanes as the hydrogen source to yield a mixture of silylformates, silylacetals and methoxysilanes, which upon further hydrolysis with D 2 O, produces their respective C1‐type products, that is H 13 COOD, 13 CH 2 (OD) 2 and 13 CH 3 OD. If a monohydrosilane was used as the hydrogen source, a selective reduction of 13 CO 2 to a product mixture of only silylformates was observed. Addition of diethylamine to this reaction mixture results in the formation of H 13 COOH and Et 2 N 13 CHO. This robust catalytic system is not only maintenance‐free and simple to handle, as compared with organometallic and organocatalyst systems, but also shows 3‐ to 11‐fold better catalytic activity and exhibits higher turnover numbers (TONs) up to 21 900 (activity=6.22 kg CO 2 g Pt −1 bar −1 ).