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Citation: XU Rong-Qi, ZHANG Zhen-Wei, CUI Yu, ZHANG Huai-Zhong, SUN Guo-Xin. Extraction of Thulium(Ⅲ) Nitrate with N, N, N', N'-Tetrabutylmalonamide[J]. Chinese Journal of Applied Chemistry, ;2004, 21(4): 419-421. shu

Extraction of Thulium(Ⅲ) Nitrate with N, N, N', N'-Tetrabutylmalonamide

1.
Institute of Chemistry and Chemical Engineering, Ji'nan University, Ji'nan 250022

Corresponding author: SUN Guo-Xin,
Received Date: 20 June 2002
Available Online: 10 October 2003
Fund Project: 国家自然科学基金(20301008) (20301008)

The behavior of N, N, N', N'-tetrabutylmalonamide(TBMA) in extraction of Tin(Ⅲ) using toluene as diluent has been investigated. The effects of the concentrations of TBMA, nitric acid, lithium nitrate, and temperature on the extraction have been studied. The composition of the extracted species was found to be Tm(NO₃)₃·3TBMA as characterized by IR spectrometry. The apparent equilibrium constant of extraction has been determined to be(0.61±0.18) L⁶/mol^-6 at 298 K. Enthalpy of the extraction reaction is-27.61 kJ/mol.
- thulium(Ⅲ)nitrate,
- extraction,
- N,N,N',N'-tetrabutylmalonamide
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