Lewis Acid-Assisted Formic Acid Dehydrogenation Using a Pincer-Supported Iron Catalyst

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• 作者：Elizabeth A. Bielinski ; Paraskevi O. Lagaditis ; Yuanyuan Zhang ; Brandon Q. Mercado ; Christian W眉rtele ; Wesley H. Bernskoetter ; Nilay Hazari ; Sven Schneider
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：July 23, 2014
• 年：2014
• 卷：136
• 期：29
• 页码：10234-10237
• 全文大小：268K
• ISSN：1520-5126

文摘

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.