新材料与新技术

石墨烯纳米片/聚乙二醇杂化膜的制备及其渗透汽化脱硫性能研究

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  • 1.中国轻工业清洁生产和资源综合利用重点实验室,北京工商大学,北京100048;
    2.清华大学化学工程联合国家重点实验室,北京100084
徐恒俐(1993-),女,硕士研究生,主要研究方向为渗透汽化膜分离。

收稿日期: 2019-06-05

  修回日期: 2020-05-30

  网络出版日期: 2020-10-23

基金资助

国家自然科学基金(21736001、21776153和21576150);北京市自然科学基金委-北京市教委联合资助项目(KZ201910011012);化学工程联合国家重点实验室开放基金项目(No.SKL-ChE-18A01);北京工商大学2019年研究生科研能力提升计划项目(2019012);北京市大学生科学研究与创业行动计划建设项目(2020011B16)

Preparation and pervaporation performance of GNS/PEG hybrid membrane for desulfurization

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  • 1. Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry,Beijing Technology and Business University,Beijing 100048;
    2. Department of Chemical Engineering,Tsinghua University,Beijing 100084

Received date: 2019-06-05

  Revised date: 2020-05-30

  Online published: 2020-10-23

摘要

以聚乙二醇(PEG)为基膜材料,将石墨烯纳米片(GNS)填充至PEG中制备了GNS/PEG杂化膜。通过扫描电镜(SEM)、红外光谱(FT-IR)、溶胀度测试(Sw)和热重分析(TG)等手段对膜材料及杂化膜的形貌、表面化学性质、耐溶胀性以及热性能进行了表征。将其应用于渗透汽化噻吩/正庚烷混合物体系的分离,结果表明:当GNS填充量由0.2%上升至1%,富硫因子呈增大趋势,渗透通量呈先下降后增加趋势,这可能是随着GNS填充量的变化,GNS提供的层间小分子传质通道、界面结构、PEG自由体积及分子间作用力均有不同程度的变化。随着操作温度的升高,渗透通量升高,富硫因子先降低后升高。当GNS填充量为1%时,渗透通量为166.34g/(m2·h),富硫因子为19.77,比纯PEG膜分别提高了61.29%和26.35%。

本文引用格式

徐恒俐, 王梦妍, 王福豪, 展侠, 李继定 . 石墨烯纳米片/聚乙二醇杂化膜的制备及其渗透汽化脱硫性能研究[J]. 化工新型材料, 2020 , 48(8) : 100 -103 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.08.021

Abstract

Graphene nano-sheets/polyethylene glycol (GNS/PEG) hybrid membranes were prepared by physical filling of GNS into PEG matrix.The morphology,surface chemical properties,swelling resistance and thermal properties was characterized by SEM,FT-IR,swelling measurement and TGA.GNS/PEG were applied for pervaporation desulfurization of thiophene/n-hexane mixtures.It was found that sulfur enrichment factor increased,with permeation flux decreasing first and increasing thereafter,as GNS loading increased from 0.2% to 1%.This was mainly ascribed to the variation of interlayer mass transfer channels,interface structure,free volume of PEG and intermolecular force due to the increasing of GNS loading.As operation temperature increased,the permeation flux increased,with sulfur enrichment factor decreased first and increased thereafter.As GNS loading was 1%,the permeation flux and enrichment factor were 166.34g/(m2·h) and 19.77,which was 61.29% and 26.35% higher than that of pure PEG membrane,respectively.

参考文献

[1] 展侠,孙晓芳,徐恒俐,等.渗透汽化汽油脱硫膜材料[J].化学进展,2019,31(5):752-759.
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