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以共沉淀法制备了铈－锰混合氧化物催化剂，采用Ｘ射线衍射分析（ＸＲＤ）、程序升温脱附－质谱检测（ＴＰＤ－ＭＳ）、程度升温还原（ＴＰＲ）等手段考察了催化剂的结构、还原活性及表面氧脱附件能，结果表明，单组分Ｍｎ－Ｏ催化剂的晶相结构为方铁锰矿型Ｍｎ＿２Ｏ＿３，双组分Ｍｎ－Ｃｅ－Ｏ催化剂为ｒ－Ｍｎ＿２Ｏ－＿３和ＣｅＯ＿２（Ｍｎ／Ｃｅ摩尔比为８：１，含少量方铁锰矿型Ｍｎ＿２Ｏ＿３。氧化铈的存在不影响氧化锰ＴＰＤ－Ｏ＿２特征峰的位置，但表面吸附氧量明显增加，并同催化剂对甲醇的完全氧化活性进行了关联，当Ｍｎ／Ｃｅ原子比为４：１时，催化剂活性最高。ＣｅＯ＿２的存在还改变了Ｍｎ＿２Ｏ＿３还原特性，这表明ＣｅＯ＿２和Ｍｎ＿２Ｏ＿３之间存在相互作用。
The catalyst of cerium-manganese mixed oxide was prepared by co-precipitation method. The structure of the catalyst was investigated by X-ray diffraction (XRD), temperature programmed desorption-mass spectrometry (TPD-MS) and temperature-programmed reduction (TPR) The results show that the crystal structure of one-component Mn-O catalyst is bixbyite Mn_2O_3 and the two-component Mn-Ce-O catalyst is r-Mn_2O_3 and CeO2 (Mn / Ce with a molar ratio of 8: 1, containing a small amount of briquette Mn_2O_3. The presence of cerium oxide does not affect the position of the characteristic peak of manganese oxide TPD-O_2, but the surface oxygen adsorption capacity increased significantly, and with the catalyst on the complete oxidation activity of methanol , The activity of the catalyst is the highest when the Mn / Ce atomic ratio is 4: 1. The presence of CeO_2 also changes the Mn_2O_3 reduction characteristics, indicating the interaction between CeO_2 and Mn_2O_3.