Preparation Of Ni-CeO2Catalyst By The Miroemulsion Method In A Rotator-Stator Reactor

CO2reforming of methane can not only transfer the greenhouse gas of CH4and CO2into chemical products, but also produce syngas with a low H2/CO ratio, which is an ideal raw material for Fischer-Tropsch synthesis. Therefore, the production of syngas by CO2reforming of methane has received wide attention.Based on the high gravity technology, the Ni-CeO2catalyst was prepared by the microemulsion method in a rotator-stator reactor (RSR). The effects of operating conditions on the properties of the Ni-CeO2catalyst was investigated, including reaction temperature, pH of reaction endpoint, initial concentration of reactants, rotating speed, liquid flow, gas flow and calcinations temperature. The catalytic activity of Ni-CeO2catalyst was studied by CO2reforming of methane.Experimental results indicated that reaction temperature of30℃, pH of9, initial concentration of0.7mol/L, RSR rotating speed of1300rpm, liquid flow rate of0.25L/min, gas flow rate of50L/h, calcination temperature of600℃and calcination time of3h were the optimal operating conditions. Under the optimal operating conditions, the Ni-CeO2catalyst obtained in RSR exhibited narrower particle size distribution, larger specific surface area and higher catalytic activity than that obtained in STR.