Abstract: Several nano transition metal oxides with high catalytic activity discovered in recent years are reviewed. Nano-catalysts with different crystallographic planes or crystal types，good absorption properties，stable chemical properties，and recyclability，can be prepared by controlling reaction conditions，changing the proportion of surfactant added，and selecting different reaction pathways. The size，shape and composition of nano-catalysts are the key factors influencing their performance. Oxide catalytic reaction mechanism is discussed in order to design high catalytic activity nano-particles.

Key words: nano-particles, metal oxide, composite catalyst

摘要： 介绍了几种重要的过渡金属纳米氧化物催化剂，通过控制反应条件、改变表面活性剂的添加比例、选择不同反应途径等不同制备方法，制备出具有不同晶型（面）、不同粒径大小、具有良好吸附性能、化学性质稳定、可循环利用的催化活性高的氧化物催化剂。通过实验研究发现，晶型（面）、粒径大小及形状是影响纳米催化剂性能的关键因素，同时探讨了氧化物催化反应机理，以期针对不同的化学反应体系设计、研发出特定粒径大小、形状、高活性晶型（面）的高催化效率、低成本的纳米催化剂，为氧化物催化剂的开发应用提供一定的参考。

关键词: 纳米粒子, 金属氧化物, 复合催化剂