Synthesis of DCAP and its effects on extraction separation of light rare earth ions. Issue 8 (24th May 2021)

• Record Type: Journal Article
• Authors: Liang, Enxiang; Yang, Xin; Yang, Caixia; Yi, Jianming; Wan*, Qiong
• Is Part Of: Separation science and technology. Volume 56:Issue 8(2021)
• Page Start: 1351
• Page End: 1359
• Publication Date: 2021-05-24
• Subjects: DCAP -- synthesis -- rare earth separation -- extraction equilibrium constant -- extraction mechanism; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2020.1778725
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: A de-tert-butyl calix arene phosphate (DCAP) with a complete elimination of the upper edge and a complete substitution of the lower edge was synthesized by dealkylation and substitution reactions. The chemical structure of DCAP was further characterized by FTIR, mass MS and 1 H NMR. The ability of DCAP to extract light rare earth ions was studied as a function of concentration, aqueous phase pH, phase ratio, and extraction time. The results showed that DCAP had a 4% higher extraction rate of Pr 3+ compared to Nd 3+ under the same conditions. Preliminary extraction mechanism was also investigated.