| Synthesis of Chelating Resin PETU and Its Adsorption to Ag(I) |
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| 引用本文： | 钟宏,王帅,邱运仁,王爱萍. Synthesis of Chelating Resin PETU and Its Adsorption to Ag(I)[J]. 过程工程学报, 2007, 7(4): 689-693 |
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| 作者姓名： | 钟宏 王帅 邱运仁 王爱萍 |
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| 作者单位： | Department of Chemistry ＆ Chemical Engineering, Central South University, Changsha, Hunan 410083, China |
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| 摘 要： | A novel chelating resin (PETU) with thiourea groups in its main chain was synthesized by the reaction of O,O'-butane-1,4-diyl dicarbonisothiocyanatidate and triethylene tetraamine. The adsorption of Ag(I) on PETU was investigated by batch tests. The results showed that adsorption data fitted Boyd's diffusion equation of liquid film and the adsorption was controlled by liquid film diffusion. Under the temperatures between 15~60℃, the adsorption capacity decreased with the increase of temperature, and increased with the increase of initial concentration of Ag(I). The experimental data fitted Langmuir and Freundlich equations, and the correlation coefficients for Langmuir equation were between 0.9965~0.9998, and those for Freundlich equation were between 0.8211~0.9810, and increased with the adsorption temperature. DH, DG and DS calculated by thermodynamic formulae were all negative, which meant that the adsorption process was exothermic and spontaneous, and the entropy decreased during the process. XPS results showed that N, S and O atoms were the electron donors to coordinate with Ag.
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| 关 键 词： | chelating resin , Ag(I),adsorption |
| 文章编号： | 1009-606X（2007）04-0689-05 |
| 修稿时间： | 2006-09-18 |
Synthesis of Chelating Resin PETU and Its Adsorption to Ag(Ⅰ) |
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| ZHONG Hong,WANG Shuai,QIU Yun-ren,WANG Ai-ping. Synthesis of Chelating Resin PETU and Its Adsorption to Ag(Ⅰ)[J]. Chinese Journal of Process Engineering, 2007, 7(4): 689-693 |
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| Authors: | ZHONG Hong WANG Shuai QIU Yun-ren WANG Ai-ping |
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| Affiliation: | Department of Chemistry & Chemical Engineering,Central South University, Changsha, Hunan 410083, China;Department of Chemistry & Chemical Engineering,Central South University, Changsha, Hunan 410083, China;Department of Chemistry & Chemical Engineering,Central South University, Changsha, Hunan 410083, China;Department of Chemistry & Chemical Engineering,Central South University, Changsha, Hunan 410083, China |
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| Abstract: | A novel chelating resin (PETU) with thiourea groups in its main chain was synthesized by the reaction of O,O'-butane-1,4-diyl dicarbonisothiocyanatidate and triethylene tetraamine. The adsorption of Ag(Ⅰ) on PETU was investigated by batch tests. The results showed that adsorption data fitted Boyd's diffusion equation of liquid film and the adsorption was controlled by liquid film diffusion. Under the temperatures between 15～60℃, the adsorption capacity decreased with the increase of temperature, and increased with the increase of initial concentration of Ag(Ⅰ). The experimental data fitted Langmuir and Freundlich equations, and the correlation coefficients for Langmuir equation were between 0.9965～0.9998, and those for Freundlich equation were between 0.8211～0.9810, and increased with the adsorption temperature. △H, △G and △S calculated by thermodynamic formulae were all negative, which meant that the adsorption process was exothermic and spontaneous, and the entropy decreased during the process. XPS results showed that N, S and O atoms were the electron donors to coordinate with Ag. |
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| Keywords: | chelating resin Ag(Ⅰ) adsorption Adsorption Chelating Resin atoms electron coordinate entropy during process thermodynamic negative Langmuir equation correlation coefficients experimental data equations increased initial concentration adsorption capacity temperatures |
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