• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >Enhanced CO2/CH4 separation properties of asymmetric mixed matrix membrane by incorporating nano-porous ZSM-5 and MIL-53 particles into Matrimid (R) 5218
【24h】

Enhanced CO2/CH4 separation properties of asymmetric mixed matrix membrane by incorporating nano-porous ZSM-5 and MIL-53 particles into Matrimid (R) 5218

机译：通过将纳米多孔ZSM-5和MIL-53颗粒掺入Matrimid（R）5218中，增强了不对称混合基质膜的CO2 / CH4分离性能

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

Asymmetric Matrimid/fillers mixed matrix membranes, composed of a metal organic framework (MIL-53; with CO2 sorption properties) and a zeolite (ZSM-5; with size selective properties) as porous fillers, were used in CO2/CH4 separation. Cross-sectional SEM images of membranes showed a complete porous structure with finger-like pores. The presence of 6 wt. % of ZSM-5 in membrane matrix led to the CO2/CH4 selectivity enhancement. Conversely, results obtained from gas permeance tests (i.e., pure and mixed gas test) conducted over those membranes which contain higher loading percentage, showed the increase of permeation along with selectivity decline. Creation of interfacial voids between polymer and particles at higher loading of ZSM-5 caused the performance failure of membrane and selectivity was decreased, too. Alternatively, those membranes incorporated with MIL-53 particles, compared to pure Matrimid, showed significant enhancement in permeance of gases and CO2/CH4 selectivity. Organic linkers of MIL-53 improve the quality of polymer-filler interfaces and decrease the probability of the formation of interfacial voids as much as possible, which resulted in membrane performance enhancement. In pure permeation, CO2 permeance showed 270% growth and CO2/CH4 selectivity increased from 14.8 to 23.6 in membranes containing 15 wt. % MIL-53 compared to pure asymmetric Matrimid. MMMs filled with MIL-53 particles were suggested more proper separation factor compared to those embedded by ZSM-5 particles. The superior performance of Matrimid/MIL-53 MMM was attributed to the quality of polymer/filler interfaces as well as selective CO2 adsorption with embedded MIL-53. The best CO2 permeance and CO2/CH4 selectivity gained by Matrimide/MIL-53 at 3 bar were 46 GPU and 23.6 respectively; where Matrimid/ZSM-5 exhibited a CO2 permeance of 14.5 GPU and CO2/CH4 selectivity of 15.6. As the feed pressure increased from 3 to 12 bar, the permeance of both gases in MMMs decreased and CO2/CH4 selectivity increased, too. The increase of operating temperature from 35 to 65 degrees C resulted in enhancement of gas permeance, while CO2/CH4 selectivity decreased. Various permeation models (i.e., Maxwell, Bruggeman and Lewis Nielsen) were used to predict mixed matrix membranes' separation properties. All models showed appropriate compatibility with experimental data at lower particles loading. (C) 2015 Elsevier B.V. All rights reserved.
机译：由金属有机骨架（MIL-53;具有CO2吸附特性）和沸石（ZSM-5;具有尺寸选择特性）作为多孔填料的不对称Matrimid /填料混合基质膜用于CO2 / CH4分离。膜的横截面SEM图像显示具有指孔的完整的多孔结构。存在6重量％。膜基质中ZSM-5的％导致CO2 / CH4选择性增强。相反，从对那些具有较高载量百分比的膜进行的气体渗透性测试（即，纯气体和混合气体测试）获得的结果表明，渗透性增加且选择性下降。在较高的ZSM-5负载下，聚合物与颗粒之间形成界面空隙会导致膜的性能下降，选择性也会降低。或者，与纯Matrimid相比，掺有MIL-53颗粒的那些膜在气体渗透率和CO2 / CH4选择性方面表现出显着提高。 MIL-53的有机连接基提高了聚合物-填料界面的质量，并尽可能降低了形成界面空隙的可能性，从而提高了膜的性能。在纯渗透中，CO2渗透率显示270％增长，而含15 wt。与纯不对称基质胶相比，％MIL-53。与用ZSM-5颗粒嵌入的MMM相比，建议使用填充MIL-53颗粒的MMM分离因子更合适。 Matrimid / MIL-53 MMM的卓越性能归因于聚合物/填料界面的质量以及嵌入的MIL-53对CO2的选择性吸附。 Matrimide / MIL-53在3巴下获得的最佳CO2渗透率和CO2 / CH4选择性分别为46 GPU和23.6。其中Matrimid / ZSM-5的CO2渗透率为14.5 GPU，CO2 / CH4选择性为15.6。随着进料压力从3 bar增加到12 bar，两种气体在MMM中的渗透率降低，CO2 / CH4选择性也提高。工作温度从35摄氏度提高到65摄氏度，提高了气体渗透性，同时降低了CO2 / CH4的选择性。各种渗透模型（即Maxwell，Bruggeman和Lewis Nielsen）用于预测混合基质膜的分离特性。所有模型均在较低的颗粒负载下显示出与实验数据的适当兼容性。 （C）2015 Elsevier B.V.保留所有权利。

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