【作者】 张良苗； 殷文宇； 徐引娟； 戴雨茹； 陆文聪； 陈念贻；

【Author】 Zhang Liangmiao, Yin Wenyu, Xu Yinjuan, Dai Yuru, Lu Wencong, Chen Nianyi (Alumina Research Group, Department of Chemistry, Shanghai University, Shanghai 200444, China)

【机构】 上海大学化学系；

【摘要】 用电导率测量、红外、拉曼、紫外光谱测量研究萃取拜耳法的萃取油相,结果表明:NaOH、KOH的正辛醇溶液的电导率在μS 数量级,摩尔电导随浓度下降而单调地升高。表明溶液中主要存在离子对或离子集团。红外光谱、拉曼光谱和紫外光谱测量结果表明: 正辛醇萃取NaOH后,其红外光谱、拉曼光谱和紫外光谱变化都不很明显,与文献中报道的氟代醇萃取NaOH后呈现醇盐的特征峰不同。估计NaOH在正辛醇中的溶解主要表现为物理溶解,形成离子对或离子集团。更多还原

【Abstract】 The electroconductance, IR, UV and Raman spectra of the oil phase of L-L extraction modified Bayer process were measured. The electroconductance of NaOH or KOH solution in 1-octanol is in the order of μS, and monotonically increasing with the lowering concentration. It implies that the chief species in these solutions are ion-pair and ionic clusters. The spectroscopic results indicate that the IR, Raman and UV spectra of NaOH solution in 1-octanol are not obviously different from the spectrum of water saturated 1-octanol. This is rather different from the fact that the spectra of the NaOH dissolved in fluorinated alcohol solution, which exhibits obvious alkaloid band. It implies that the solution of NaOH in 1-octanol is physical dissolution without chemical reaction with 1-octanol.更多还原