Article ID Journal Published Year Pages File Type
7720543 International Journal of Hydrogen Energy 2014 7 Pages PDF
Abstract
An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO + 3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water-gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product.
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Physical Sciences and Engineering Chemistry Electrochemistry
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