Comparison of Cu-Ce-Zr and Cu-Zn-Al mixed oxide catalysts for water-gas shift

摘要

Cu-Zn-Al and Cu-Ce-Zr mixed oxide catalysts were prepared by two different methods, co-precipitation and flame spray pyrolysis. The performance of the catalysts was evaluated using the water-gas shift reaction with and without CO2 and H2 added to the feed. Cu-Ce-Zr catalysts are found not to be superior to Cu-Zn-Al catalysts in terms of initial activity and short-term stability. Their apparent activation energy appears to be less affected by increased concentrations of CO2 and H2.