Electrochemical CO oxidation by a Rh tetraaza[14]annulene‐based catalyst

Electrochemical CO oxidation catalyzed by Rh complexes of tetraaza[14]annulene was examined. Rh complexes on carbon black exhibit much higher CO oxidation activity than Rh porphyrins or conventional Pt alloy catalysts. The onset potential for CO oxidation is lower than 0 V vs. a reversible hydrogen...

Full description

Saved in:
Bibliographic Details
Published in:ChemCatChem 2020-05, Vol.12 (10), p.2717-2720
Main Authors: Yamazaki, Shin‐ichi, Asahi, Masafumi, Siroma, Zyun, Ioroi, Tsutomu
Format: Article
Language:English
Subjects:
annulene
CO oxidation
electrocatalyst
rhodium
water gas shift
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electrochemical CO oxidation catalyzed by Rh complexes of tetraaza[14]annulene was examined. Rh complexes on carbon black exhibit much higher CO oxidation activity than Rh porphyrins or conventional Pt alloy catalysts. The onset potential for CO oxidation is lower than 0 V vs. a reversible hydrogen electrode. As a result, a combination of electrochemical CO oxidation by Rh tetraaza[14]annulene and proton reduction by Pt catalysts generates slight electricity. The combined overall reaction is a water‐gas shift reaction (CO+H2O→CO2+H2). The co‐presence of Rh tetraaza[14]annulene catalyst and Pt catalyst promotes the water‐gas shift reaction. CO CO Cabana: A Rh complex‐based CO electro‐oxidation catalyst was found. This catalyst catalyzes CO oxidation at low potentials (below 0 V vs. a reversible hydrogen electrode). This catalyst enables a water‐gas shift reactor and catalyst.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.202000276