High-temperature WGSR kinetics

Most of the studies show that some of the kinetic expressions valid for high-temperature WGSR are also valid for low-temperature WGSR. Shchibiya et al. found a kinetic expression similar to high-temperature kinetic equation based on Cu0/Zn0/Cr203 [2b]. Later Uchida et al. [49] confirmed that the kinetic expression derived from redox mechanism accurately correlated the kinetic data obtained with the Cu-Zn catalysts. Cherednik et al. [50] proposed other equation for a commercial catalyst (2u0/Zn0/Cr203... 

The thermodynamics of the WGSR are well known that at high temperatures the CO conversion is equilibrium limited and at low temperatures the reaction is kinetically limited. The Cu-based catalysts are not suitable active catalysts for single-stage WGS applications. For this reason industries first operate at higher temperatures to have 95-97% CO conversion, and then the remaining... 

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