Lewis Acid-Assisted Formic Acid Dehydrogenation Using a Pincer-Supported Iron Catalyst
Journal of the American Chemical Society2014Vol. 136(29), pp. 10234–10237
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Elizabeth A. Bielinski, Paraskevi O. Lagaditis, Yuanyuan Zhang, Brandon Q. Mercado, Christian Würtele, Wesley H. Bernskoetter, Nilay Hazari, Sven Schneider
Abstract
Formic acid (FA) is an attractive compound for H2 storage. Currently, the most active catalysts for FA dehydrogenation use precious metals. Here, we report a homogeneous iron catalyst that, when used with a Lewis acid (LA) co-catalyst, gives approximately 1,000,000 turnovers for FA dehydrogenation. To date, this is the highest turnover number reported for a first-row transition metal catalyst. Preliminary studies suggest that the LA assists in the decarboxylation of a key iron formate intermediate and can also be used to enhance the reverse process of CO2 hydrogenation.
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