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首页> 外文期刊>RSC Advances >CO2-philic moderate selective layer mixed matrix membranes containing surface functionalized NaX towards highly-efficient CO2 capture
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CO2-philic moderate selective layer mixed matrix membranes containing surface functionalized NaX towards highly-efficient CO2 capture

机译：CO2-素浓度选择层混合基质膜含有表面官能化NAX朝向高效的CO2捕获

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摘要

A functional moderate selective layer mixed matrix membrane (F-MSL-MMM) is a promising candidate to obtain superior separation of industrial gases, compared to commonly mixed matrix membranes. In this work, highly permeable and selective F-MSL-MMMs consisting of a moderate Pebax layer filled with functionalized NaX nano-zeolite over a microstructure PES support layer with the desired operating stability were prepared to investigate the effect of -COOH surface functionalization on the NaX nano-zeolites and to achieve the efficient separation of CO2/N-2, CO2/CH4 and CH4/N-2 gas mixtures. It was found that modification of the nano-zeolite had significant effects on the morphology and gas separation performance of the F-MSL-MMMs. The incorporation of NaX-COOH nano-zeolites into the polymeric matrix showed superior dispersion, capabilities and interactions over unmodified zeolite without any defects. In addition, based on gas permeation results at various filler loadings and feed pressures, different trends were observed for the permeability and selectivity of the F-MSL-MMMs. Combination of NaX up to 1.5% into the moderate selective layer enhanced the CO2 permeability (187.76 barrer) and CO2/N-2 (288.86), CO2/CH4 (57.41) and N-2/CH4 (5.03) selectivities at 6 bar.
机译：与常用的基质膜相比，功能中等选择层混合基质膜（F-MSL-MMM）是获得优异的工业气体分离的有希望的候选者。在该工作中，高度渗透和选择性的F-MSL-MMM由填充有官能化NAX纳米沸石的中等PeBax层，并制备了具有所需的操作稳定性的微结构PES载体层，以研究-COOH表面官能化对的作用纳克纳米沸石和达到CO 2 / N-2，CO 2 / CH4和CH 4 / N-2气体混合物的有效分离。发现纳米沸石的改性对F-MSL-MMM的形态和气体分离性能具有显着影响。将Nax-CoOH纳米沸石掺入聚合物基质中显示出优异的分散体，能力和在未经修饰的沸石上的相互作用而没有任何缺陷。另外，基于燃气渗透结果，在各种填充载体和进料压力下，观察到不同趋势的渗透性和F-MSL-MMM的选择性。将Nax的组合高达1.5％进入中等选择性层增强了6巴的CO 2渗透率（187.76个漏极）和CO 2 / N-2（288.86），CO 2 / CH 4（57.41）和N-2 / CH 4（5.03）选择性。

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  • 来源
    《RSC Advances》 |2019年第27期|共12页
  • 作者

    Maleh Mohammad Salehi; Raisi Ahmadreza;

  • 作者单位

    Amirkabir Univ Technol Tehran Polytech Dept Chem Engn Hafez Ave POB 15875-4413 Tehran Iran;

    Amirkabir Univ Technol Tehran Polytech Dept Chem Engn Hafez Ave POB 15875-4413 Tehran Iran;

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  • 正文语种 eng
  • 中图分类 化学;
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