A Molecular Copper Catalyst for Hydrogenation of CO 2 to Formate

There is widespread interest in the hydrogenation of CO2 to energy-rich products such as formate. However, first-row transition metal complexes that catalyze the hydrogenation of CO2 to formate remain rare. Copper phosphine complexes are widely used in the reduction of organic substrates but have no...

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Bibliographic Details
Published in:ACS catalysis 2015-09, Vol.5 (9), p.5301-5305
Main Authors: Zall, Christopher M., Linehan, John C., Appel, Aaron M.
Format: Article
Language:English
Subjects:
catalysis
CO2
copper
energy
hydrogenation
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Summary:There is widespread interest in the hydrogenation of CO2 to energy-rich products such as formate. However, first-row transition metal complexes that catalyze the hydrogenation of CO2 to formate remain rare. Copper phosphine complexes are widely used in the reduction of organic substrates but have not previously been used as catalysts for the conversion of H2 and CO2 to formate. Here we demonstrate that the triphosphine-ligated copper(I) complex LCu(MeCN)PF6 is an active catalyst for CO2 hydrogenation in the presence of a suitable base. Screening of bases and studies of catalytic reactions by in operando spectroscopy revealed important and unusual roles for the base in promoting H2 activation and turnover.
ISSN:2155-5435
2155-5435
DOI:10.1021/acscatal.5b01646