The Role of the Coprecipitation Sequence of Salt Precursors on the Genesis of Cu-ZnO-Al2O3 Catalysts: Synthesis, Characterization and Activity for Low Temperature Shift Reaction

Brazilian Journal of Chemical Engineering

卷:15

关键词: Copper-zinc-aluminum catalysts;    catalyst preparation;    catalyst characterization;    copper surface species;    structure-activity relationship;    water-gas shift reaction;   

DOI  :  10.1590/S0104-66321998000200011

来源: DOAJ

【 摘 要 】

Cu-ZnO-Al2O3 catalysts for the low-temperature water-gas shift reaction were prepared using methods of direct and reverse coprecipitation. The catalysts obtained were characterized by DRX, TPR, XPS, N2O chemisorption, Hg-Porosimetry and BET surface area. It was observed that the precipitation sequence of the precursors led to significant differences in values of copper dispersion and consequently in the activity of the catalyst for the water-gas shift reaction.

【 授权许可】

Unknown