Abstract
In this study, the effect of the pretreatment time on the properties of Ni/TiO2 catalysts was examined. The optimum time was determined to be below 3 h with regard to the catalytic activity. The difference between the CH4 conversion and CO2 conversion drastically increased on the catalyst that was pretreated for 4hr. The activity tests of the reverse water gas shift reaction (RWGS), temperature-programmed hydrogenation, and elementary reaction of dry reforming over the catalysts showed that the difference between the two conversions was caused by the high RWGS reaction rate.
