Understanding Synergistic Solvent Extractants for Rhodium

溶剂萃取是一种用于回收铂族金属(PGM)的技术，由于铂族金属在英国制造业中的重要性，铂族金属被归类为关键材料。它是PGM回收中更可持续和更有效的工艺之一，可用于商业分离除Rh以外的所有PGM。为了提纯Rh，大多数PGM回收商依赖于不可持续和能源密集型的沉淀/焙烧过程，这些过程不允许配体回收。乐福和莫里森实验室最近的工作发现，两种简单的萃取剂组合在一起，可以通过溶剂萃取协同回收铑，而这两种萃取剂本身都不能萃取铑。

Solvent extraction is a technology used to recycle platinum group metals (PGMs), which are classed as critical materials because of their importance in UK manufacturing. It is one of the more sustainable and efficient processes in PGM recycling, and can be used commercially to separate all PGMs except rhodium. To purify rhodium, most PGM recyclers depend on unsustainable and energy intensive precipitation/calcination processes which do not allow for ligand recycling. Recent work in the Love and Morrison labs discovered that a combination of two simple extractants, neither of which will extract rhodium on its own, can result in the synergistic recovery of rhodium by solvent extraction.