Nickel and cobalt catalysts for production of H2 and oxidation of H2: Shoving protons around with pendant amines

R. Morris Bullock; Jenny Y. Yang; John A.S. Roberts; Uriah J. Kilgore; Eric S. Wiedner; Tianbiao Liu; Daniel L. Dubois

Nickel and cobalt catalysts for production of H₂ and oxidation of H₂: Shoving protons around with pendant amines

R. Morris Bullock, Jenny Y. Yang, John A.S. Roberts, Uriah J. Kilgore, Eric S. Wiedner, Tianbiao Liu, Daniel L. Dubois

Pacific Northwest National Laboratory

Research output: Contribution to journal › Conference article › peer-review

Abstract

Catalysts that efficiently interconvert between electrical energy and chemical bonds (fuels) are needed for a sustainable and flexible energy supply. Reactions that involve transfer of multiple protons and electrons are pervasive in energy science, as exemplified by the two-proton, two-electron oxidation of H₂ and the reverse, production of H₂ by reduction of protons. Pendant amines incorporated into diphosphines function as proton relays, lowering the barrier for proton mobility and assisting in formation and cleavage of the H-H bond. A series of Ni(II) and Co(II) complexes with diphosphine/pendant amine ligands catalyze the production of H₂, and related Ni(II) catalysts catalyze the oxidation of H₂. Mn and Fe complexes with diphosphine/pendant amine ligands are also capable of heterolytic cleavage of H₂ under some conditions.

Original language	English
Journal	ACS National Meeting Book of Abstracts
Publication status	Published - Aug 25 2011
Event	241st ACS National Meeting and Exposition - Anaheim, CA, United States Duration: Mar 27 2011 → Mar 31 2011

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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Nickel and cobalt catalysts for production of H₂ and oxidation of H₂ : Shoving protons around with pendant amines. / Bullock, R. Morris; Yang, Jenny Y.; Roberts, John A.S.; Kilgore, Uriah J.; Wiedner, Eric S.; Liu, Tianbiao; Dubois, Daniel L.

In: ACS National Meeting Book of Abstracts, 25.08.2011.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "Catalysts that efficiently interconvert between electrical energy and chemical bonds (fuels) are needed for a sustainable and flexible energy supply. Reactions that involve transfer of multiple protons and electrons are pervasive in energy science, as exemplified by the two-proton, two-electron oxidation of H2 and the reverse, production of H2 by reduction of protons. Pendant amines incorporated into diphosphines function as proton relays, lowering the barrier for proton mobility and assisting in formation and cleavage of the H-H bond. A series of Ni(II) and Co(II) complexes with diphosphine/pendant amine ligands catalyze the production of H2, and related Ni(II) catalysts catalyze the oxidation of H2. Mn and Fe complexes with diphosphine/pendant amine ligands are also capable of heterolytic cleavage of H2 under some conditions.",

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AU - Roberts, John A.S.

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AU - Wiedner, Eric S.

AU - Liu, Tianbiao

AU - Dubois, Daniel L.

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AB - Catalysts that efficiently interconvert between electrical energy and chemical bonds (fuels) are needed for a sustainable and flexible energy supply. Reactions that involve transfer of multiple protons and electrons are pervasive in energy science, as exemplified by the two-proton, two-electron oxidation of H2 and the reverse, production of H2 by reduction of protons. Pendant amines incorporated into diphosphines function as proton relays, lowering the barrier for proton mobility and assisting in formation and cleavage of the H-H bond. A series of Ni(II) and Co(II) complexes with diphosphine/pendant amine ligands catalyze the production of H2, and related Ni(II) catalysts catalyze the oxidation of H2. Mn and Fe complexes with diphosphine/pendant amine ligands are also capable of heterolytic cleavage of H2 under some conditions.

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