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Manganese (I) κ2-NN complex-catalyzed Formic acid Dehydrogenation

Abstract

Hydrogen use as a sustainable energy vector is of growing interest and is subject of current intensive re-search. We report herein an upgraded follow-up system for formic acid (FA) dehydrogenation (DH) catalyzed by [Mn(BisIm)(CO)3Br] (BisIm = 4,4',5,5'-tetrahydro-1H,1'H-2,2'-bisimidazole). The latter belongs to a family of novel catalysts we developed, which are interesting since they bear easily accessible ligands from cheap, commercially available starting materials. The novel catalyst system allows for improved hydrogen generation and better catalyst turnover numbers (7883 after 12 cycles of FA dosage). In addition, significantly lower CO content in the gas phase was also achieved (47 ppm). Extended investigation of the influence of the ligand structure on the catalytic performances confirmed that the non-bounding electron pair on the N-H moiety, on the 3rd position of each imidazoline ring, is crucial for the Transformation.

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Supplementary files

Article information


Submitted
16 Apr 2020
Accepted
15 May 2020
First published
19 May 2020

Catal. Sci. Technol., 2020, Accepted Manuscript
Article type
Paper

Manganese (I) κ2-NN complex-catalyzed Formic acid Dehydrogenation

A. Leval, H. Junge and M. Beller, Catal. Sci. Technol., 2020, Accepted Manuscript , DOI: 10.1039/D0CY00769B

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