The promoting effect of adsorbed carbon monoxide on the oxidation of alcohols on a gold catalyst.

Nature Chemistry
Paramaconi RodríguezMarc T M Koper

Abstract

In heterogeneous catalysis and electrocatalysis, adsorbed carbon monoxide typically acts as a poison or poisoning intermediate in the oxidation of alcohols. However, gold as an (electro)catalyst often exhibits unexpected properties. Here we show that carbon monoxide irreversibly adsorbed on a Au(111) surface in aqueous alkaline media can act as a promoter for the electrocatalytic oxidation of certain alcohols, in particular methanol. In comparison with bare Au(111), the onset potential for methanol oxidation is significantly lower in the presence of adsorbed CO, and formation of the main methanol oxidation products--formaldehyde and formic acid--is enhanced. By studying the effect of adsorbed CO on the oxidation of other alcohols on gold, we conclude that the presence of adsorbed CO promotes beta-hydrogen elimination, that is, C-H bond breaking. Apart from its importance to gold catalysis, this is an unanticipated example of promotion effects by co-adsorbed small molecules in electrocatalysis.

References

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Citations

Nov 5, 2015·Journal of the American Chemical Society·Anthony Shoji HallYogesh Surendranath
Jul 19, 2016·The Journal of Physical Chemistry Letters·Andrew UlvestadOleg G Shpyrko
Oct 23, 2014·ACS Applied Materials & Interfaces·Hongjun YouShengchun Yang
Jan 6, 2017·Physical Chemistry Chemical Physics : PCCP·Ming YanChun-Ran Chang
Apr 10, 2015·Physical Chemistry Chemical Physics : PCCP·X ShiD Roy
Mar 8, 2016·Physical Chemistry Chemical Physics : PCCP·Wenhui ZhongJun Jiang
Feb 18, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Seydou HebiéK Boniface Kokoh
Aug 21, 2018·Chemistry : a European Journal·Kui Li, Yujie Sun
Jan 24, 2019·Angewandte Chemie·Stefano MezzavillaIb Chorkendorff
Apr 24, 2019·Nanoscale·Yaxing LiuTesfaye Tadesse Gebremariam
Sep 27, 2012·Physical Chemistry Chemical Physics : PCCP·Marc T M Koper
Oct 16, 2013·Physical Chemistry Chemical Physics : PCCP·R Q ZhangA Soon
Feb 13, 2014·Physical Chemistry Chemical Physics : PCCP·Ping WuChenxin Cai
Mar 29, 2014·Physical Chemistry Chemical Physics : PCCP·Niels Bendtsen HalckJan Rossmeisl
Nov 28, 2014·Physical Chemistry Chemical Physics : PCCP·Ping WuChenxin Cai
Apr 14, 2015·Nanoscale·Jingguo LiJianping Xie
Mar 7, 2020·Chemical Society Reviews·Jiajia SongZhichuan J Xu
Aug 2, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Areeg AbdelrahmanLudwig A Kibler
Apr 15, 2014·Physical Chemistry Chemical Physics : PCCP·Paramaconi Rodriguez, Marc T M Koper
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Aug 8, 2020·Research : a Science Partner Journal·Ruixuan QinNanfeng Zheng
Jan 12, 2021·ChemSusChem·Tianyu Li, David A Harrington
Aug 24, 2017·Chemical Reviews·Jan Philip Kraack, Peter Hamm
Mar 13, 2012·Journal of the American Chemical Society·Liang-Xin DingYe-Xiang Tong
Jul 19, 2012·The Journal of Physical Chemistry Letters·Ming PanC Buddie Mullins

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