• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Effect of relative humidity on the gas transport properties of zeolite A/PTMSP mixed matrix membranes
【24h】

Effect of relative humidity on the gas transport properties of zeolite A/PTMSP mixed matrix membranes

机译：相对湿度对沸石A / PTMSP混合基质膜气体传输性能的影响

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

Increasing the knowledge of the influence of water vapor in new mixed matrix membranes (MMMs) could favor the integration of novel membrane materials in the recovery of CO2 from wet industrial streams. In this work, the water vapor effect on the N-2, CH4 and CO2 permeability through MMMs comprised of 20 wt% hydrophilic zeolite 4A in hydrophobic PTMSP polymer were investigated in the relative humidity range 0-75%. While in the pure PTMSP membranes, the permeability of all gases decreases with water vapor activity, with almost unchanged CO2/N-2 and CO2/CH4 selectivities, in zeolite A/PTMSP MMMs, the CO2 permeability increases with increasing water content in the system up to 50% R.H., resulting in an increase in CO2/N-2 and CO2/CH4 selectivities with respect to pure PTMSP. Gas sorption was studied so that the effect the residual humidity in the zeolite 4A has on the sorption of the different gases helped explaining the permeability observations. The sorption and humid permeation behavior were evaluated by a simple model equation based on the NELF theory, taking into account the multicomponent gas sorption and diffusion in the presence of humidity, as well as the counteracting effects of the hydrophobic PTMSP and hydrophilic zeolite A in a very accurate way.
机译：增加了新的混合基质膜（MMMS）中水蒸气影响的知识可以赞成新型膜材料在湿工业溪流中恢复二氧化碳中的整合。在这项工作中，在相对湿度范围内研究了由20wt％亲水性沸石4a的N-2，CH4和CO2渗透率的水蒸汽效应在相对湿度范围内，在0-75％的相对湿度范围内研究。在纯PTMSP膜中，所有气体的渗透率随水蒸气活性降低，具有几乎不变的CO 2 / N-2和CO 2 / CH 4选择性，在沸石A / PTMSP MMMS中，CO 2渗透率随着系统中的含水量增加而增加高达50％RH，导致CO 2 / N-2和CO 2 / CH 4相对于纯PTMSP的选择性增加。研究了气体吸附，使得沸石4a中的残余湿度对不同气体的吸附有助于解释渗透性观察。基于Nelf理论的简单模型方程评估了吸附和潮湿的行为，考虑了湿度存在的多组分气体吸附和扩散，以及疏水PTMSP和亲水沸石A中的抵抗效应非常准确的方式。

著录项

  • 来源
    《RSC Advances》 |2018年第7期|共11页
  • 作者

    Fernandez-Barquin Ana; Rea Riccardo; Venturi Davide; Giacinti-Baschetti Marco; Grazia De Angelis Maria; Casado-Coterillo Clara; Irabien Angel;

  • 作者单位

    Univ Cantabria ETSIIT Dept Chem &

    Biomol Engn Avda Los Castros S-N E-39005 Santander Spain;

    Alma Mater Studiorum Univ Bologna Dipartimento Ingn Civile Chim Ambientale &

    Mat Via Terracini 28 Bologna Italy;

    Alma Mater Studiorum Univ Bologna Dipartimento Ingn Civile Chim Ambientale &

    Mat Via Terracini 28 Bologna Italy;

    Alma Mater Studiorum Univ Bologna Dipartimento Ingn Civile Chim Ambientale &

    Mat Via Terracini 28 Bologna Italy;

    Alma Mater Studiorum Univ Bologna Dipartimento Ingn Civile Chim Ambientale &

    Mat Via Terracini 28 Bologna Italy;

    Univ Cantabria ETSIIT Dept Chem &

    Biomol Engn Avda Los Castros S-N E-39005 Santander Spain;

    Univ Cantabria ETSIIT Dept Chem &

    Biomol Engn Avda Los Castros S-N E-39005 Santander Spain;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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