Efficient hydrogen storage and production using a catalyst with an imidazoline-based, proton-responsive ligand

Wang, Lin; Onishi, Naoya; Murata, Kazuhisa; Hirose, Takuji; Muckerman, James T.; Fujita, Etsuko; Himeda, Yuichiro

doi:10.1002/cssc.201601437

Title: Efficient hydrogen storage and production using a catalyst with an imidazoline-based, proton-responsive ligand

Journal Article · Wed Dec 28 00:00:00 EST 2016 · ChemSusChem

DOI:https://doi.org/10.1002/cssc.201601437· OSTI ID:1337648

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Dept. of Energy and Environment National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Research Institute of Energy Frontier
Saitama Univ., Saitama (Japan)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Abstract A series of new imidazoline‐based iridium complexes has been developed for hydrogenation of CO ₂ and dehydrogenation of formic acid. One of the proton‐responsive complexes bearing two −OH groups at ortho and para positions on a coordinating pyridine ring ( 3 b ) can catalyze efficiently the chemical fixation of CO ₂ and release H ₂ under mild conditions in aqueous media without using organic additives/solvents. Notably, hydrogenation of CO ₂ can be efficiently carried out under CO ₂ and H ₂ at atmospheric pressure in basic water by 3 b , achieving a turnover frequency of 106 h ⁻¹ and a turnover number of 7280 at 25 °C, which are higher than ever reported. Moreover, highly efficient CO‐free hydrogen production from formic acid in aqueous solution employing the same catalyst under mild conditions has been achieved, thus providing a promising potential H ₂ ‐storage system in water.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1337648

Alternate ID(s):: OSTI ID: 1401030

Report Number(s):: BNL-113296-2016-JA; R&D Project: CO026; KC0304030

Journal Information:: ChemSusChem, Journal Name: ChemSusChem; ISSN 1864-5631

Publisher:: ChemPubSoc EuropeCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 55 works

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