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›› 2009, Vol. 9 ›› Issue (6): 1099-1102.

• 反应与分离 • 上一篇    下一篇

Cyanex272浸渍树脂吸萃重稀土机理

焦芸芬 廖春发 聂华平 姜平国 梁勇   

  1. 江西理工大学材料与化学工程学院 江西理工大学材料与化学工程学院 江西理工大学材料与化学工程学院 江西理工大学材料与化学工程学院
  • 收稿日期:2009-03-27 修回日期:2009-06-18 出版日期:2009-12-20 发布日期:2009-12-20
  • 通讯作者: 廖春发

Adsorption Mechanism of Heavy Rare Earth by Cyanex272 Impregnated Resin

JIAO Yun-fen LIAO Chun-fa NIE Hua-ping JIANG Ping-guo LIANG Yong   

  1. School of Material and Chemical Engineering, Jiangxi University of Science & Technology, Ganzhou 341000, Jiangxi, China School of Material and Chemical Engineering, Jiangxi University of Science & Technology School of Material and Chemical Engineering, Jiangxi University of Science & Technology School of Material and Chemical Engineering, Jiangxi University of Science & Technology
  • Received:2009-03-27 Revised:2009-06-18 Online:2009-12-20 Published:2009-12-20
  • Contact: LIAO Chun-fa

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摘要： 采用饱和法、等摩尔法、斜率法确定了Cyanex272(HA)浸渍树脂吸萃重稀土(RE)形成萃合物的萃合比(HA/RE摩尔比)为3，Cl-不参与配位. 通过红外光谱分析，确定了萃取剂Cyanex272在萃取色层中表现为单聚体，生成的萃合物为REA3，这与常规的溶剂萃取剂在煤油体系中表现为二聚体相比减少了萃取剂用量. Cyanex272浸渍树脂吸萃重稀土的反应式可表示为RE3+(a)+3HA(r)=REA3(r)+3H+(a).

关键词: Cyanex272, 浸渍树脂, 重稀土, 吸萃机理

Abstract: Through the methods of saturation, equivalent molarity and slope, the experimental results showed that the extraction ratio for Cyanex272 resin approached 3 and chlorine ions did not take part in the coordination reaction. The results by infrared spectroscopy also showed that Cyanex272 was single-polymer in extraction chromatography by which the amount of extractant was less than double-polymer in solvent extraction. The extracted compound was determined as REA3. The adsorption-extraction mechanism by Cyanex272 could be expressed as RE3+(a)+3HA(r)=REA3(r)+3H+(a).

Key words: Cyanex272, impregnated resin, heavy rare earth, adsorption-extraction mechanism

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