• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Comparative study of adsorption for m-phenylenediamine in aqueous solution onto chemically modified resins
【24h】

Comparative study of adsorption for m-phenylenediamine in aqueous solution onto chemically modified resins

机译：水溶液中M-苯二胺的吸附对化学改性树脂的比较研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Four kinds of hypercrosslinked resins (acidic resins labeled SAMR and TAMR and heterocyclic resins IDLMR and PRLMR) were synthesized as adsorbents to remove m-phenylenediamine (MPD) from aqueous solution comparably. The Brunauer-Emmett-Teller specific surface area and pore size distribution of the two types of resins have been compared, and the infrared spectra of the resins confirm the presence of the modified groups. The adsorption isotherms illustrate that the Freundlich equation fits more appropriately than the Langmuir equation or the Temkin equation. In addition, the kinetic curves indicate that the pseudo-second-order model is a better fit than the pseudo-first-order model. The thermodynamic studies show that the isosteric adsorption enthalpy changes (Delta H) and the Gibbs free energy change (Delta G) are both negative, revealing that all of the adsorption processes are spontaneous and exothermic. All of the modified resins exhibit the best adsorption capacity at pH = 6.24. The results show that the acidic resins have better adsorption of MPD. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47378.
机译：合成了四种高速旋转树脂（标记的SAMR和Tamr和杂环树脂idlmr和prlmr）作为吸附剂，以相当地从水溶液中除去M-苯二胺（MPD）。已经比较了Brunauer-Emmett-Teller特异性表面积和孔径分布，并且树脂的红外光谱证实了改性基团的存在。吸附等温物说明了Freundlich方程比Langmuir方程或Temkin方程更适当地适合。另外，动力学曲线表明伪二阶模型是比伪第一阶模型更好的合适。热力学研究表明，该子剂吸附焓变化（Delta H）和Gibbs自由能变化（Delta G）都是阴性的，揭示所有吸附过程是自发性和放热的。所有改性树脂都表现出pH = 6.24的最佳吸附容量。结果表明，酸性树脂更好地吸附了MPD。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47378。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号