皂化二-(2-乙基己基)磷酸微乳液及其萃取VO^(2+)的红外光谱研究

Studies on Microemulsion and Infrared Spectra of Organic Phase of Extraction of Vanadium (Ⅳ) with Saponified Di-(2-Ethylhexyl)-Phosphoric Acid

研究了利用氨水和ＮａＯＨ皂化Ｐ２０４煤油和Ｐ２０４仲辛醇煤油体系形成的微乳液萃取ＶＯ２＋的红外光谱变化规律。结果表明，两种皂化体系由于水化形成氢键，Ｐ＝Ｏ键的吸收频率均降低，萃取ＶＯ２＋后由于萃合物中两个Ｐ＝Ｏ键产生振动耦合吸收峰分裂为二。

The IR spectra of organic phase obtained from the extraction of vanadium (Ⅳ) with P204kerosene system and P204ROHkerosene system saponified by NaOH and NH_3·H_2O was investigated. The changes in the stretching vibration of P=O, P—O—C, P—OH, P—O etc were discussed. In the saponification of P204, the OH stretching and bending band disappear and the P=O stretching band of P204 at 1236 cm-1 shifts to 1210 cm-1 (NaOH) and 1204 cm-1 (NH_3·H_2O). After the extraction of vanadium (Ⅳ), the P=O stretching band splits apart into two peaks of 1243 and 1217 cm-1.