| 1-苯基-3-甲基-4-苯甲酰基吡唑酮-5对铒(Ⅲ)及铥(Ⅲ)萃取的溶剂效应 |
| SOLVENT EFFECT ON THE EXTRACTION OF ERBIUM(Ⅲ) AND THULIUM(Ⅲ) WITH 1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOL-5-ONE |
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| 摘要: 本文用斜率法研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(HPMBP,HA)从硝酸介质中对铒(Ⅲ)或铥(Ⅲ)萃取的溶剂效应.萃取平衡可用下式表示: Ln3++3(HA)o=(LnA3)o+3H+ 实验测定了在四种不同溶剂(CCl4,苯,甲苯和二甲苯)中,有机相萃合物的生成常数logβ°300。并以Hildebrand正规溶液理论为基础导出求logβ°300的半经验公式: 对ErA3:logβ°300=log(1000d/M)-0.47(10.05-δo)2+17.54 对TmA3:logβ°300=log(1000d/M)-0.47(10.37-δo)2+18.22 式中d,M和δo分别表示有机溶剂的密度,摩尔质量及溶解度参数,由半经验公式计算出的logβ°300理论值与实验值基本符合。 |
| 关键词: 溶剂效应 萃取 铒(Ⅲ) 铥(Ⅲ) 吡唑酮 |
| 基金项目: |
| Abstract: The solvent effect on the extraction of erbium(Ⅲ) and thulium(Ⅲ) with 1-phenyl-3-methyl-4-benzoyl-pyrazol-5-one(HPMBP,HA) from a nitric acid medium have been studied by the slope analysis method. It is found that the extraction equilibrium can be expressed as follows:Ln3++3(HA)o=(LnA3)o+3H+The formation constant iogβ°300 of the extracted complex in the organic phase (denoted bysubscript o) in four different solvents (CCl4,benzene,toluene and xylene) were determined by experiment and calculated with two semi-emperical expressions based on the Hildebrand regular solution theory.ForErA3: logβ°300=log(1000d/M)- 0.47(10.05 -δ)2+17.54 ForTmA3: logβ°300=log(1000d/M)- 0.47(10.37-δ)2+18.22 where d、M andδrepresent density,mole mass and solubility parameter of the solvents. By comparing the theoretical and experimental values of logβ°300,agreements were observed in four insert solvents. |
| Keywords: solvent effect extraction erbium(Ⅲ) thulium(Ⅲ) pyrazolone |
| 投稿时间：1987-09-15 |
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| 罗明润,程立,曹子卿,张风美.1-苯基-3-甲基-4-苯甲酰基吡唑酮-5对铒(Ⅲ)及铥(Ⅲ)萃取的溶剂效应[J].无机化学学报,1989,5(4):43-51. |
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