High-temperature WGSR reaction mechanism

TABLE 9.1 Proposed Reaction Mechanisms for High-Temperature WGSR... 

In recent studies about new formulations of the high-temperature catalysts, diffuse reflectance infrared Fourier transform spectroscopy was used to elucidate the reaction mechanism. The results showed that the catalyst surface can provide oxygen to CO even in the absence of water. When the surface comes in contact with water, the surface of the catalyst recovers oxygen. The presence of intermediate species on the catalyst surface was not detected. This suggested that the WGSR over Fe based catalysts proceeds by redox mechanism. 

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