Nanocrystalline MgO supported nickel-based bimetallic catalysts for carbon dioxide reforming of methane

Abstract

Nanocrystalline magnesium oxide with high surface area and plate-like shape was employed as catalyst support for preparation of nickel-based bimetallic catalysts in methane reforming with carbon dioxide. The prepared samples were characterized by X-ray diffraction (XRD), N 2 adsorption (BET), Temperature programmed oxidation and desorption (TPO–TPD), Thermal gravimetric and differential thermal gravimetric (TGA–DTG), H 2 chemisorption and Transmission and electron microscopies (TEM and SEM) analyses. CO 2–TPD data showed the high CO 2 adsorption capacity of catalysts which improves the resistance of catalysts against the carbon formation. The H 2 chemisorption results also indicated that the addition of Pt to nickel catalyst improved the nickel dispersion. The obtained results revealed that the prepared catalysts showed a high activity and stability during the reaction with a low amount of deposited carbon. Addition of Pt to nickel catalyst improved both the activity and resistivity against carbon formation.