Treatment of fluid catalytic cracking spent catalysts to recover lanthanum and cerium: Comparison between selective precipitation and solvent extraction
作者： Valentina Innocenzi , Francesco Ferella , Ida De Michelis , Francesco Vegliò
DOI: 10.1016/J.JIEC.2014.09.014
关键词:
摘要: Abstract The paper is focused on the study of hydrometallurgical processes for recovery rare earths (RE) from fluid catalytic cracking catalysts (FCCC). According to experimental results two were proposed: in first one RE recovered as double sulfates by selective precipitation with sodium hydroxide after leaching sulfuric acid. second approach consisted dissolution powder acids, solvent extraction (2-ethylhexyl)phosphoric acid (D2EHPA), stripping and oxalates using oxalic Experiments showed that was found be beneficial terms achieving improved final products quality greater purity (∼98%).
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