A series of ordered mesoporous MgOeAl2O3 composite oxides with various Mg containing
were facilely synthesized via one-pot evaporation induced self-assembly strategy. These
materials with advantageous structural properties and superior thermal stabilities were
used as the supports of Ni based catalysts for CO2 reforming of CH4. These mesoporous
catalysts behaved both high catalytic activities and long term stabilities toward this reaction.
The effects of the mesopore structure and MgO basic modifier on catalytic performances
were carefully studied. Specifically, their mesoporous frameworks could
accommodate the gaseous reactants with more “accessible” Ni active centers; the
“confinement effect” of the mesopores would effectively suppress the thermal sintering of
the Ni nanoparticles; the modified MgO basic sites would enhance the chemisorption and
activation of CO2. Consequently, the catalytic activities and stabilities of these catalysts
were greatly promoted. Therefore, the present materials were considered as promising
catalyst supports for CO2 reforming of CH4.