采用聚丙烯胺溶胶-凝胶法制备了类钙钛矿La0.7Nd0.3SrCoO4和La0.7Ce0.3SrCoO4复合氧化物催化剂,考察了它们对CO和C3H8的催化氧化活性,并运用XRD,IR,TPR和TPD等手段对催化剂进行了表征.结果表明,稀土掺杂后的LaSrCoO4复合氧化物均为K2NiF4型结构,不同稀土掺杂对LaSrCoO4复合氧化物的CO和C3H8氧化活性的影响不同,Nd掺杂能增加Co3+、化学吸附氧和晶格氧的数量,提高复合氧化物的活性.
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