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本文研究了 TbO_2·xH_2O 在部分无机强酸、有机弱酸及酸性盐溶液中的胶溶作用.通过对溶胶光学性质、电学性质、聚沉值、紫外.可见吸收光谱及部分溶胶聚沉物的元素分析和红外光谱分析等的研究,得出 Tb(Ⅳ)水合氧化物在无机强酸、有机一元酸及其氯代酸中是以带正电荷的胶体状态存在;在有机二元酸的酸性盐溶液中是以带负电荷的胶体状态存在.本文还对 Tb(Ⅳ)水合氧化物在上述酸中的氧化还原动力学进行了研究,并探讨了胶溶的原因及反应机理.
In this paper, the peptization of TbO_2 · xH_2O in some inorganic strong acids, organic weak acids and acidic salt solutions was studied.The optical properties, electrical properties, sedimentation value, UV-vis absorption spectra and elemental analysis of some sol particles And infrared spectroscopy. It is concluded that Tb (Ⅳ) hydrate oxide exists as a positively charged colloidal state in inorganic strong acids, organic monobasic acids and their chlorinated acids. In acidic salts of organic dibasic acids Is a negatively charged colloidal state.This paper also studied the redox kinetics of Tb (Ⅳ) hydrate oxide in the above acid, and discussed the reason and reaction mechanism of peptization.