Effect of the Calcination Temperature of LaNiO3 on the Structural Properties and Reaction Performance of Catalysts in the Steam Reforming of Methane

The steam reforming of methane (SRM) reaction is a significant process for efficient syngas generation and promising distributed hydrogen production. In this work, series LaNiO3 oxides were prepared using the Pechini method, calcined from 600 °C to 900 tested SRM reaction. Fresh, reduced, used samples characterized STA-MS-FTIR, in situ ex XRD, N2 physical adsorption, H2-TPR, TEM, TPO, Raman. results show that begins crystallize at about 550 °C, increase calcination temperature following differences properties samples: larger grains, smaller specific surface area, higher reduction temperature, Ni0 grains reduced bulk phase, stronger metal–support interaction. maximum CH4 conversion could be achieved over calcinated 800 °C. addition, effect steam-to-carbon ratio (S/C) on performance was studied, S/C 1.5 found optimal conversion. Too strong interaction too much unreacted causes loss catalytic activity. Finally, it also proved TPO Raman an improves carbon deposition resistance catalyst.