Effect of Calcination Temperature on the Performance of NiO-CeO₂-ZnO Catalyst for Ethanol Steam Reforming

NiO-CeO₂-ZnO catalyst was synthesized in co-precipitation method. The structure and performance of the catalysts calcinated at different temperatures were characterized by TG-DSC, XRD, SEM methods. It is revealed that the grain size and crystallinity of catalyst increase markedly with the increase in calcination temperature. Serious sintering phenomenon was found on the catalyst because of excessive catalyst calcination temperature, which resulted in a big drop of dispersion on the surface of catalyst. The catalyst showed excellent selectivity and yield of hydrogen, however, the performance of catalyst for hydrogen production decreased with the increase of calcination temperature.