Catalytic Decomposition of Propane and Catalytic Performance of CO2 Reforming of C3H8 Over Ni Catalyst

Abstract

The decomposition and reaction of propane with CO₂ had been investigated on Ni/SiO₂ catalysts. It was found that the decomposition of propane is a temperature sensitive process. The amount of deposited carbon decreases with the increasing temperature. At lower temperature, a large proportion of H-rich carbon species was observed, which might locate mainly on the surface of the support. However, the order of graphitization of the deposited carbon increased with the temperature and might be formed mainly on the surface of nickel particles. The conversion of C₃H₈ and CO₂ reached nearly 100 % and 88.5 % on the Ni/SiO₂ catalyst under the chosen test conditions (C₃H₈/CO₂/Ar = 10/30/260 (V/V/V, GHSV = 18000 h^-1). According to the catalytic performance of Ni/SiO₂ at different temperature, it was confirmed that the higher reaction temperature favours the CO₂ reforming of C₃H₈.