Reversible hydrogen storage using CO 2 and a proton-switchable iridium catalyst in aqueous media under mild temperatures and pressures

Jonathan F. Hull, Yuichiro Himeda, Wan Hui Wang, Brian Hashiguchi, Roy Periana, David J. Szalda, James Muckerman, Etsuko Fujita

Research output: Contribution to journalArticle

491 Citations (Scopus)

Abstract

Green plants convert CO 2 to sugar for energy storage via photosynthesis. We report a novel catalyst that uses CO 2 and hydrogen to store energy in formic acid. Using a homogeneous iridium catalyst with a proton-responsive ligand, we show the first reversible and recyclable hydrogen storage system that operates under mild conditions using CO 2, formate and formic acid. This system is energy-efficient and green because it operates near ambient conditions, uses water as a solvent, produces high-pressure CO-free hydrogen, and uses pH to control hydrogen production or consumption. The extraordinary and switchable catalytic activity is attributed to the multifunctional ligand, which acts as a proton-relay and strong π-donor, and is rationalized by theoretical and experimental studies.

Original languageEnglish
Pages (from-to)383-388
Number of pages6
JournalNature Chemistry
Volume4
Issue number5
DOIs
Publication statusPublished - May 2012

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formic acid
Iridium
Formic acid
Hydrogen storage
Carbon Monoxide
Protons
Ligands
Hydrogen
Catalysts
Photosynthesis
Hydrogen production
Sugars
Energy storage
Catalyst activity
Temperature
Water

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Reversible hydrogen storage using CO 2 and a proton-switchable iridium catalyst in aqueous media under mild temperatures and pressures. / Hull, Jonathan F.; Himeda, Yuichiro; Wang, Wan Hui; Hashiguchi, Brian; Periana, Roy; Szalda, David J.; Muckerman, James; Fujita, Etsuko.

In: Nature Chemistry, Vol. 4, No. 5, 05.2012, p. 383-388.

Research output: Contribution to journalArticle

Hull, Jonathan F. ; Himeda, Yuichiro ; Wang, Wan Hui ; Hashiguchi, Brian ; Periana, Roy ; Szalda, David J. ; Muckerman, James ; Fujita, Etsuko. / Reversible hydrogen storage using CO 2 and a proton-switchable iridium catalyst in aqueous media under mild temperatures and pressures. In: Nature Chemistry. 2012 ; Vol. 4, No. 5. pp. 383-388.
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