稀土氧化物负载型纳米催化剂的性能调控及应用研究进展

Research Progress on Performance Regulation and Application of Rare Earth Oxide Supported Nanocatalysts

稀土氧化物由于具有优异的热稳定性、丰富的电子结构、可逆储放氧能力等优势而被广泛应用于催化领域。将稀土氧化物作为催化剂的高效载体负载活性金属,在提高催化性能和降低金属尤其是贵金属用量方面显示出巨大的潜力。首先根据稀土氧化物负载型催化剂的组成,从活性金属、载体和助剂三个方面阐述了催化剂的常用优化策略。接着介绍了稀土氧化物负载型催化剂在CO氧化、水煤气变换反应、CO_(2)加氢、CO_(2)还原和氨分解制氢等小分子转化反应中的应用进展。最后对稀土氧化物负载型催化剂的发展前景和现存挑战进行了分析和展望。

Rare earth oxides are widely used in the fields of catalysis due to their excellent thermal stability,abundant electronic structures,and reversible oxygen storage and release capabilities.The use of rare earth oxides as efficient carrier materials for catalysts to support active metals shows great potential in improving catalytic performance and reducing the amount of metals,especially noble metals.In this review,according to the composition of rare earth oxide supported catalysts,the common optimization strategies of catalysts are expounded from three aspects:active metals,supports and promoters.Then the application progress of rare earth oxide supported catalysts in CO oxidation,water-gas shift reaction,CO_(2)hydrogenation,CO_(2)reduction and ammonia decomposition are introduced.Finally,the development prospects and existing challenges of rare earth oxide supported catalysts are analyzed and prospected.