Promotion effects of Ga2O3 on CO2 adsorption and conversion over a SiO2-supported Ni catalyst

CO2 adsorbs physically onto SiO2 but is activated on Ga2O3-promoted SiO2, resulting in surface carbonate and bicarbonate species. Consequently, the Ni/SiO2-Ga2O3 catalyst showed a higher stability and coke resistance for CO2 reforming of methane than the Ni/SiO2 catalyst.