金属的溶剂萃取热力学研究 2:In~2(SO~4)~3+Na~2SO~4+D~2EHMTPA+n-C~8H~18+H~2O体系 |
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引用本文: | 刘兴芝,杨家振,宋玉林,康艳红.金属的溶剂萃取热力学研究 2:In~2(SO~4)~3+Na~2SO~4+D~2EHMTPA+n-C~8H~18+H~2O体系[J].化学学报,1992,50(7):625-631. |
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作者姓名: | 刘兴芝 杨家振 宋玉林 康艳红 |
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作者单位: | 辽宁大学化学系 |
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摘 要: | 在温度278.15-303.15K和离子强度=为0.1-2.0mol/kg范围内,在萃取体系In~2(SO~4)~3+Na~2SO~4+D~2EHMTPA+n-C~8H~18+H~2O体系中,本文测定了萃取平衡的In^3+的平衡浓度和水相pH值,其中Na~2SO~4为支持电解质.根据Pitzer电解质溶液理论,估算了平衡水相中的真实离子强度值,并用直线外推法和多项式拟合法确定了萃取过程的热力学平衡常数K^ ,进而计算了这个萃取过程的各个热力学量.
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关 键 词: | 热力学性质 萃取剂 溶剂萃取 硫代磷酸 P 硫酸钠 辛烷 硫酸铟 热力学常数 |
Studies on the thermodynamics of the solvent extraction of metal.2. In~2(SO~4)~3+Na~2SO~4+D~2EHMTPA+n-C~8H~18+H~2O |
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Abstract: | Equilibrium was studied in the system In2(SO4)3 - Na2SO4 - D2EHMTPA - octane - water at ionic strengths 1.0-2.0 mol/kg in aqueous phase containing the supporting electrolyte Na2SO4 at temps. between 278.15 and 303.15 K and with a constant original molality of extractant in the organic phase. The standard extration constants were determine and the thermodn. functions were calculated |
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Keywords: | THERMODYNAMIC PROPERTIES EXTRACTIVE AGENT SOLVENT EXTRACTION PHOSPHOROTHIOIC ACID P SODIUM SULFATE OCTANE INDIUM SULFATE |
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