Study on the Extraction Performance of N,N'-dimethyl-N,N'-dioctyl-3-oxa-diglycolamide for 13 Lanthanides in Sulfuric Acid System

Xuming Chen; Chen Wang; Guoxin Tian

doi:10.70114/acmsr.2026.6.1.P201

Study on the Extraction Performance of N,N'-dimethyl-N,N'-dioctyl-3-oxa-diglycolamide for 13 Lanthanides in Sulfuric Acid System

Authors:

Xuming Chen, Chen Wang, Guoxin Tian

Keywords:

N,N'-dimethyl-N,N'-dioctyl-3-oxa-diglycolamide; distribution ratio; extraction.

Doi:

10.70114/acmsr.2026.6.1.P201

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Abstract

This study investigates the extraction behavior of 13 lanthanide elements (Ln(III)) by N,N'-dimethyl-N,N'-dioctyl-3-oxa-diglycolamide (DMDODGA) in a sulfuric acid medium, using 40/60 (v/v) % octanol/kerosene as the solvent. The effects of aqueous phase sulfuric acid concentration, DMDODGA concentration, and temperature on the distribution ratio were systematically examined. Slope analysis and thermodynamic parameter determination were performed to elucidate the extraction mechanism.