Department of Chemical Engineering,Mahanakorn University of Technology,Bangkok 10530,Thailand;
Center for Advanced Materials and Environmental Research,Mahanakovn University of Technology,Bangkok 10530,Thailand;
The Petroleum and Petrochemical College,Chulalongkorn University,Bangkok 10330,Thailand;
Department of Chemical Engineering,University of Michigan,Ann Arbor,MI 481092136,USA;
methane; partial oxidation; Ni/CeO2-ZrO2; niobium;