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考察了Ｎ_（５０３）萃淋树脂在盐酸、氢溴酸、硫酸－溴化钠体系中对铟的吸萃性能，研究了Ｎ_（５０３）萃淋树脂在氢溴酸体系中吸萃铟的动力学和机理，发现Ｎ_（５０３）萃淋树脂吸萃铟的反应按假一级反应进行，并符合Ｆｒｅｕｎｄｌｉｃｈ等温吸附式。吸附平衡和红外光谱研究发现Ｎ_（５０３）萃淋树脂吸附铟的反应按下式进行：
The adsorption properties of N 503 leaching resin to indium in hydrochloric acid, hydrobromic acid and sulfuric acid-sodium bromide systems were investigated. The kinetics of absorption of indium by N 503 leaching resin in hydrobromic acid system was studied. The results showed that the absorption of indium by N_ (503) extraction resin was carried out according to the pseudo first order reaction and the Freundlich adsorption isotherm. Adsorption equilibrium and infrared spectroscopy study found N_ (503) extraction resin adsorption indium reaction according to the following formula: