Abstract
The electrocatalytic proton reduction activity of a Ni bis(diphosphine) (NiP) and a cobaloxime (CoP) catalyst has been studied in water in the presence of the gaseous inhibitors O2 and CO. CoP shows an appreciable tolerance towards O2, but its activity suffers severely in the presence of CO. In contrast, NiP is strongly inhibited by O2, but produces H2 under high CO concentrations.
Highlights
(NiP) and a cobaloxime (CoP) catalyst has been studied in water in the presence of the gaseous inhibitors O2 and CO
Proton reduction catalysts are an integral part of either system and have generated considerable research interest.[3]
Depending on the intended use of a system, proton reduction catalysts could be exposed to large amounts of O2 or CO (CO2 splitting)
Summary
(NiP) and a cobaloxime (CoP) catalyst has been studied in water in the presence of the gaseous inhibitors O2 and CO. We have used a water-soluble Ni bis(diphosphine) catalyst (NiP),[14] as well as a cobaloxime (CoP)[17] (Scheme 1) to study inhibition of catalytic proton reduction activity by O2 and CO.
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