Lanthanum Modified Ni/γ-Al2O3 Catalysts for Partial Oxidation of Methane
来源期刊：JOURNAL OF RARE EARTHS2006年第3期
论文作者：Liu Yuan Ye Jilei Li Zengxi Duan Huachao
Key words：catalyst; lanthanum; mechanism; methane; nickel; POM; rare earths;
Abstract: La modified Ni/γ-Al2O3 catalysts prepared by co-precipitation method using NaOH-Na2CO3 as a precipitator show high activity and selectivity for the partial oxidation of methane (POM). Meanwhile, the addition of La is beneficial for the formation of an active component and stability of support. We investigated some factors including calcining temperature, nickel content, and space velocity, which turned out to have a strong influence on catalytic activity and selectivity. By XRD and TPR, it is concluded that Ni0 reduced from amorphous NiAl2O4 is the major active component for POM.
Liu Yuan1，Ye Jilei1，Li Zengxi2，Duan Huachao1
(1.Department of Catalysis Sciences and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072 China;
2.Department of Chemistry, Graduate School of Chinese Academy of Sciences, Beijing 100039,China)
Abstract:La modified Ni/γ-Al2O3 catalysts prepared by co-precipitation method using NaOH-Na2CO3 as a precipitator show high activity and selectivity for the partial oxidation of methane (POM). Meanwhile, the addition of La is beneficial for the formation of an active component and stability of support. We investigated some factors including calcining temperature, nickel content, and space velocity, which turned out to have a strong influence on catalytic activity and selectivity. By XRD and TPR, it is concluded that Ni0 reduced from amorphous NiAl2O4 is the major active component for POM.
Key words:catalyst; lanthanum; mechanism; methane; nickel; POM; rare earths;
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