关键词: 沉淀, 催化剂, 制备

Abstract: The new methods of preparation of copper-based catalyst by coprecipitation in recent years are presented. The use of non-thermal effect of microwave radiation，ultrasonic cavitation effect and micromixing effect under high-gravity environment can effectively control the size of catalyst grain and improve its dispersion. Also microwave radiation and ultrasonic radiation promote the substitution of Cu and Zn，accelerate precursor phase transition，and strengthen the interaction of Cu-ZnO. Coprecipitation- ammonia evaporation eliminates the negative impact of precipitant with cations. Coprecipitation deposition on various carriers has different unique performances. Liquid-phase preparation significantly improves the stability of the catalyst in slurry reactor. Gel-network-coprecipitation realizes the modulation of catalyst grain size. Through the application of new technology，the preparation of copper-based catalyst with larger surface area，more active species，medium size and high dispersion，stronger interaction and good stability is the development trend in this field.

Key words: precipitation, catalyst, preparation