Abstract
ABSTRACT The addition of CeO 2 to nickel catalyst dispersed on silica is found to improve the catalyst activity and carbon suppression in the carbon dioxide reforming of methane to syngas. A weight loading of 5% Ce enhances greatly the catalytic activity suggesting that catalysis of Ni -CeO 2 (5%)/SiO 2 is mainly connected with the surface of CeO 2 . The study of Ni -CeO 2 (5%)/SiO 2 catalyst aging reveals its ability of maintaining very low level of carbon depositing. The regeneration of the same catalyst suggests that its stability and its less coking are attributed to the oxygen storage capacity of CeO 2 .
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