磷酸根与磷酸基水化作用之比较——红外光谱研究

COMPARATIVE STUDY ON THE HYDRATION OF PHOSPHATE GROUP IN H 2O/NaDEHP/n HEPTANE AND H 2O TBP SYSTEMS BY FT IR

本文运用傅立叶变换红外光谱（ＦＴ－ＩＲ），对水／ＮａＤＥＨＰ／正庚烷反胶束体系中的磷酸根及磷酸三丁酯（ＴＢＰ）－水体系中磷酸基的水化作用进行了研究（ＮａＤＥＨＰ为二－（２－乙基己基）磷酸钠）。

The hydrations of phosphate group in both tributyl phosphate(TBP) H 2O system and water/NaDEHP/n heptane reverse micellar system have been studied using Fourier transform infrared spectroscopy (FT IR).Water content (W 0=/) in TBP solutions was measured quantitatively using FT IR.In water/NaDEHP/n heptane reverse micellar system,the stretching frequencies of phosphate group shifted from 1229 to 1200cm -1 when water content increased from 1 to 25 For TBP H 2O system,PO stretching band varied from 1281 33 to 1263cm -1 with the increasing water content (from 0 33 to 1 55).PO stretching bands in TBP H 2O system were also found to split into two peaks located around 1283 and 1260cm -1 after the bands were resolved by curve fitting.All these variations are attributed to the hydration of phosphate in the two systems.