| 巯基树脂吸附银的行为及机理 |
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| 引用本文： | 吴香梅,熊春华,舒增年. 巯基树脂吸附银的行为及机理[J]. 化工学报, 2003, 54(10): 1466-1469 |
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| 作者姓名： | 吴香梅 熊春华 舒增年 |
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| 作者单位： | 丽水师范专科学校化学系,浙江,丽水,323000;杭州商学院食品生物与环境工程学院,浙江,杭州,310035 |
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| 基金项目： | 浙江省高校中青年学科带头人基金，浙江省自然科学基金资助项目(No 2 0 0 0 72 )~~ |
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| 摘 要： | 引 言将性能优良的配位基连在高分子骨架上 ,并应用于催化、吸附、稀有金属回收等方面 ,是高分子配位化学发展的一个重要趋向[1～ 5] .含S配位原子的螯合树脂在一定条件下对贵金属有特殊的吸附作用[6,7] ,在分离、富集贵金属等方面有广阔的应用前景 .本文研究了巯基树脂对银的
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| 关 键 词： | 巯基树脂 银 吸附 机理 |
| 文章编号： | 0438-1157(2003)10-1466-04 |
| 收稿时间： | 2002-07-09 |
| 修稿时间： | 2002-07-09 |
ADSORPTION OF SILVER ONTO THIOL-RESIN AND ITS MECHANISM |
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| WU Xiangmei,XIONG Chunhua,SHU Zengnian. ADSORPTION OF SILVER ONTO THIOL-RESIN AND ITS MECHANISM[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(10): 1466-1469 |
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| Authors: | WU Xiangmei XIONG Chunhua SHU Zengnian |
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| Abstract: | The adsorption behavior and mechanism of a novel thiol-resin for Ag(Ⅰ) were investigated. Experimental results showed that the statically saturated sorption capacity was 639 mg*g-1resin at pH=4.5 in the HNO3-NaAc medium. Ag(Ⅰ) adsorbed on the thiol-resin could be eluted with (5%～10%) (NH2)2CS-1.0mol*L-1 HCl and elution percentage was over 95%.The resin could be regenerated and reused without apparent decrease of adsorption capacity. The adsorption behavior obeyed the Freundlich isotherm. The apparent adsorption rate constant was k25℃=1.56×10-5s-1 .The enthalpy change ΔH of sorption was 40.2kJ*mol-1.The functional group molar ratio to Ag(Ⅰ) was about 1∶1 and the mechanism of adsorption was examined by IR spectrometry. |
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| Keywords: | thiol resin silver adsorption mechanism |
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