Kinetics of cerium(IV) extraction with DEHEHP from HNO3-HF medium using a constant interfacial cell with laminar flow

Solvent Extraction and Ion Exchange

Volumn 24, Issue 2, 2006, Pages 165-176

  Zhao, Junmei ^a   Li, Wei ^a   Li, Deqian ^a   Xiong, Ying ^a  

^a CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY   (China)

Author keywords

Constant interfacial cell; DEHEHP; HNO3 HF solutions; Kinetics cerium(IV); Phosphonate extractant

Indexed keywords

ACTIVATION ENERGY; EXTRACTION; HEPTANE; LAMINAR FLOW; REACTION KINETICS; SURFACE CHEMISTRY;

CONSTANT INTERFACIAL CELL; PHOSPHONATE EXTRACTANT;

CERIUM;

ACTIVATION ENERGY; CERIUM; EXTRACTION; HEPTANE; LAMINAR FLOW; REACTION KINETICS; SURFACE CHEMISTRY;

EID: 33646363364     PISSN: 07366299     EISSN: 15322262     Source Type: Journal    
DOI: 10.1080/07366290500464078     Document Type: Article

References (19)

1. Xu, G. and Yuan, Ch.(1987) Extraction chemistry of rare earths. In Solvent Extraction of Rare Earths1st Ed. (pp. 89-208). Beijing: Science Press.
2. Zhao, J. and Meng, Sh. and Li, D. (2004) Liquid-liquid extraction of cerium(IV) from nitric acid media by di-(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP) Solvent Extr. Ion Exch., 22(3), pp. 429-447.
3. Zhao, J. and Zuo, Y. and Li, D. and Liu, Sh. (2004) Extraction and separation of cerium(IV) from nitric acid solutions containing thorium(IV) and rare earths(III) by DEHEHP J. Alloy. Compd., 374, pp. 438-441.
4. Zhao, J.(2005) Interfacial properties of DEHEHP and theymodynamic and kinetic studies on the extracting and separating rare earth. In. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. Doctor Thesis
5. Li, D. and Zhao, J. and Zuo, Y. and Wang, Zh.[2003]. A method of extracting Ce(IV) from nitrate rare earths solutions [Chinese Patent, Apply No. 03121396.0].
6. Zhao, J. and Meng, Sh. and Li, D. (2004) Coordination reactions in the extraction of cerium(IV) and fluorine(I) by DEHEHP from mixed nitric acid and hydrofluoric acid solutions Solvent Extr. Ion Exch., 22(5), pp. 813-831.
7. Liao, W. and Yu, G. and Li, D. (2001) Solvent extraction of cerium(IV) and fluorine(I) from sulphuric acid leaching of bastnasite by cyanex923 Solvent Extr. Ion Exch., 19(2), pp. 243-259.
8. 4-HF medium with cyanex923 Talanta, 56(4), pp. 613-618.
9. Nitsch, W. and Weigl, M. (1998) Action of amphiphilic layers on the kinetics of interfacial reactions at liquid/liquid interfaces Langmuir, 14(23), pp. 6709-6715.
10. Kneissl, F. and Geist, A. and Nitsch, W. (1999) Europium extraction into D2EHPA: Kinetics of mass transfer in a stirred cell Solvent Extr. Ion Exch., 17(3), pp. 475-493.
11. Geist, A. and Plucinski, P. and Nitsch, W. (2000) Mass transfer kinetics of reactive multi-cation co-extraction into Bis(2-ethylhexyl) phosphoric acid Solvent Extr. Ion Exch., 18(3), pp. 493-515.
12. Zheng, Z. and Lu, J. and Li, D. and Ma, G. (1998) The kinetics study in liquid-liquid systems with constant interfacial area cell with laminar flow Chem. Eng. Sci., 53(13), pp. 2327-2333.
13. Zhang, J. and Qi, L. and Fang, H.(1999) Fluorine ionic selectivity electrode determines F(I). In Instruments Analysis Experiments. (pp. 144). Beijing: Science Press.
14. Danesi, P. and Vandegrift, G. (1981) Kinetics and mechanism of the interfacial mass transfer of europium(3+) and americium(3+) in the system bis(2-ethylhexyl) phosphate-n-dodecane-sodium chloride-hydrochloric acid-water J. Phys. Chem., 85(24), pp. 3646-3651.
15. Danesi, P. and Chiarizia, R. (1980) The kinetics of metal solvent extraction Crit. Rev. Anal. Chem., 10(1), pp. 1-126. CRC Press, Inc. Boca Raton, Florida
16. Yu, J. and Ji, Ch. (1992) Interfacial chemistry and kinetics-controlled reaction mechanism of organo-phosphoric acid mixed extraction systems Chem. J. Chin. Univ. (in Chinese), 13(2), pp. 224-226.
17. Qiao, J. and Zhang, Ch. and Liu, Zh. and Hao, X. (1997) Complexation behavior of fluorine(I) with cerium(IV) in solution Rare Earths (in Chinese), 18(3), pp. 64-67.
18. Huang, Ch. and Xu, R. and Zhou, Y. and Xu, G. (1987) Studies on neutral phosphine extraction complexes of rare earths (III) Phys. Chem. Acta., 5, pp. 491-500.
19. Fu, X. and Shen, W. and Yao, T.(1990) Chemical kinetics foundations (I). In Physics Chemistry4th Ed. (pp. 768). Beijing: Nanjing University; Higher Education Press.