中文摘要：

采用共沉淀法和浸渍法制备La改性的Ni／γ-Al2O3催化剂，并用于催化甲烷部分氧化反应。共沉淀法制备的催化剂表现出较高的活性和稳定性。空速为80000h^-1、800℃时甲烷的转化率接近100％，H2的选择性达99．8％，且在稳定性实验中保持15h活性变化不大。实验采用BET、TPR和XRD说明共沉淀法制备的镍基氧化铝催化剂中，La的加入提高了催化剂的比表面积，有效的抑制了大颗粒NiAl2O4的形成，降低了催化剂活性组分的还原温度，对POM显示出很高的催化活性。

英文摘要：

La modified Ni/γ-Al2O3 catalysts prepared by co-deposition and impregnation methods for partial oxidation of methane （POM） were studied. Catalysts prepared by co-deposition method show high activity and stability because of high dispersion. The CH4 conversion was close to 100% and HE selectivity reached 99.8% over La modified Ni/γ-Al2O3 catalysts with co-deposition method under the condition of space velocity = 80 000h^-1 and CHg/OE/N2=14/7/79 （in vol） at 800℃. By BET,TPR and XRD, it was found that the addition of La enhanced the surface area of the catalysts, lowed reduction temperature of active component and improved the stability of the supports. Meanwhile, the catalysts prepared with co-deposition inhibited the formation of granular NiAl2O4, thus it showed high activity for POM.