笼形聚偕胺肟树脂的研究──贵金属在RCO_2H／ACAO树脂上的交换吸附  

Studies on "Cage" Polyamidoxime Adsorbent Exchange Adsorption of Noble Metal Ions by RCO_2H/ACAO Resins

作　　者：杨超雄[1] 吴锦远[1] 

机构地区：[1]中国科学院广州化学研究所

出　　处：《离子交换与吸附》1995年第5期416-423,共8页Ion Exchange and Adsorption

基　　金：广东省自然科学基金

摘　　要：用羧酸处理的笼形聚偕胺肟树脂（ＲＣＯ２Ｈ／ＡＣＡＯ）吸附Ｐｄ（Ⅱ）、Ｉｒ（Ⅳ）、Ｐｔ（Ⅳ）、Ａｇ（Ⅰ）、Ａｕ（Ⅲ）离子的能力与羧酸性质有关。巯基乙酸／ＡＣＡＯ树脂对Ｐｄ（Ⅱ）、Ｉｒ（Ⅳ）和Ａｕ（Ⅲ）吸附容量较高，乙二酸／ＡＣＡＯ树脂则对Ａｇ（Ⅰ）和Ｐｔ（Ⅳ）离子有稍强的吸附能力。除Ｐｄ（Ⅱ）外，ＲＣＯ２Ｈ／ＡＣＡＯ树脂吸附贵金属离子的能力低于笼形聚偕胺肟树脂（ＣＡＯ）和碱处理笼形聚偕胺肟树脂（ＢＣＡＯ）。讨论了交换吸附机理。The adsorptivity of 'cage' polyamidoxime adsorbent treated with carboxylic acids(RCO2H/ACAO) for the adsorption of Pd (Ⅱ), Ir (Ⅳ), Pt (Ⅳ), Ag (Ⅰ) and Au (Ⅲ)ions is dependent on the nature of the acids. The higher capacity was found in the adsorption of Pd (Ⅱ), Ir (Ⅳ), and Au (Ⅲ) ions by mercaptoacetic acid-treated BCAO, and the Ag (Ⅰ) and Pt (Ⅳ) ions by carboxalic acid-treated BCAO. Besides Pd (Ⅱ), the adsorptivity of RCO2H/ACAO for the noble metal ions listed above is lower than that of CAO and BCAO.The adsorption mechanism is proposed and discussed.

关 键 词：笼形树脂 聚偕胺肟 贵金属 羧酸 交换吸附 

分 类 号：O647.316.1[理学—物理化学] O614.82[理学—化学]