This study adopted hydrothermal coprecipitation in producing composite oxides LaNi0.7M0.3O3(M = Co, Fe2+, Mn, Cu) doped on B-site. The structure and composition, microstructure and stability of perovskite were characterized by tests including XRD, SEM, TG, TPD and TPR. The effects of B elements doping on the catalytic performance were investigated by using ethanol steam reforming reaction as a probe. The results show that composite oxide LaNi0.7Fe0.3O3has relatively good reducibility and adsorption properties. In the ethanol steam reforming, the conversion of ethanol reaches 95.63 %, with relatively excellent anti-carbon deposition performance.%本文采用水热共沉淀法制备了B位掺杂的LaNi0.7M0.3O3(M=Co、Fe2+、Mn、Cu)复合氧化物,用XRD、SEM、TG、TPD、TPR等实验对钙钛矿的结构与组成,微观形貌,稳定性等进行了表征,并以乙醇水蒸气重整制氢反应为探针考察了B位掺杂元素种类对其催化性能的影响.结果表明,LaNi0.7Fe0.3O3复合氧化物具有较好剂还原性和吸附性能,在乙醇水蒸气重整制氢反应中的,乙醇转化率可达到95.63 %,同时具有较好的抗积碳性能.
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