| 二-(2-乙基己基)-膦酸与C_(5～7)羟肟酸自硫酸介质中协同萃取Ga~(3 )研究 |
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| 引用本文： | 石太宏,汤兵.二-(2-乙基己基)-膦酸与C_(5～7)羟肟酸自硫酸介质中协同萃取Ga~(3 )研究[J].中山大学学报(自然科学版),2001,40(1). |
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| 作者姓名： | 石太宏 汤兵 |
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| 作者单位： | 1. 中山大学环境科学系,
2. 广东工业大学环境资源系, |
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| 摘 要： | 研究了从硫酸介质中用二－（２－乙基己基）－磷酸（Ｄ２ＥＨＰＡ，Ｈ２Ａ２，Ｐ２０４）与 Ｃ５～７，羟肟酸（ＨＲ）协同萃取Ｃａ３＋的影响因素及其机理，经斜率法和饱和容量法确定了Ｃａ３＋萃合物的组成，计算了其表观平衡常数．并利用红外光谱探讨了萃合物的结构．结果发现，在高酸度Ｈ１ＳＯ４介质中体系有明显的正协萃效应．Ｇａ３＋离子的萃取率显著提高．其机理是以离子交换的形式进行的，萃合物的结构式为Ｇａ（ＨＡ２）Ｒ２．
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| 关 键 词： | Ga 二-(2-乙某己基)-磷酸 C5～7羟肟酸 协同萃取 |
Synergistic Extraction of Ga~(3 ) from Sulfuric Acid Medium with D_2EHPA and C_(5-7) Oximine Acid |
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| SHI Tai-hong,TANG Bing.Synergistic Extraction of Ga~(3 ) from Sulfuric Acid Medium with D_2EHPA and C_(5-7) Oximine Acid[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2001,40(1). |
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| Authors: | SHI Tai-hong TANG Bing |
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| Abstract: | This paper studied the extraction mechanism of Ga3 from sulfuric acid medium with positive synergistic extractant D2EHPA and C5-7 oximine acid. the composition of the extractive obtained was determined by the slope method and the saturation extraction capacity method. The extraction equilibrium constant was also calculated. The infrared absorption spectrum of the extractive compound was studied. |
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| Keywords: | gallium D2EHPA C5-7 oximine acid synergistic extraction |
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