关键词: 催化剂, 钯, 分离, 回收, 沉淀, 萃取

Abstract: This paper is aimed to briefly introduce basic process and method for the separation and recovery of palladium from waste catalyst，to point out that the multicomponent spent palladium catalysts have high recovery value，but there are so many components that its separation is very difficult. For multicomponent spent palladium catalyst，the separation techniques of palladium from precious metals gold，silver，platinum，rhodium，etc.，as well as from non-precious metals copper，cobalt，nickel，iron and other are briefly described and evaluated. The results show that chemical precipitation，solvent extraction，reduction，and displacement are commonly used methods for recycling multicomponent spent palladium catalyst. The chemical precipitation method is the most used method，but limited by long recycling cycle，complex process，and high cost；and solvent extraction method has good separation effect and simple process，becoming the most promising method. Therefore，a new extraction technology with high selectivity，pollution free and suitable for large-scale industrialization shall be focused in future development.

Key words: catalyst, palladium, separation, recovery, precipitation, extraction