In-Situ synthesis of ZIF-8 membranes on PDA/APTES modified alumina supports and optimization of their hydrogen separation performance

IF 6.7 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2025-05-28 DOI:10.1016/j.fuel.2025.135749

Jui-Yeh Rau , Yulin Xie , Zhujian Mao , Youyi Wang , Jiayi Hao , Shihan Cai , Jian Huang

{"title":"In-Situ synthesis of ZIF-8 membranes on PDA/APTES modified alumina supports and optimization of their hydrogen separation performance","authors":"Jui-Yeh Rau , Yulin Xie , Zhujian Mao , Youyi Wang , Jiayi Hao , Shihan Cai , Jian Huang","doi":"10.1016/j.fuel.2025.135749","DOIUrl":null,"url":null,"abstract":"<div><div>The development of high-performance hydrogen separation membranes is a crucial step in the advancement of sustainable energy technologies and the achievement of carbon neutrality. In this study, zeolitic imidazolate framework-8 (ZIF-8) membranes with an ultra-high selectivity for hydrogen over carbon dioxide were successfully synthesised on polydopamine/3-aminopropyltriethoxysilane (PDA/APTES) modified Al2O3 supports. The interfacial layer exhibited excellent adhesion and a high density of functional groups, which served as nucleation sites for the growth of ZIF-8 crystals. The resulting membranes exhibited a dense and defect-free structure, achieved through an optimised 12 h in-situ growth process. The membranes exhibited excellent gas separation performance, with hydrogen(H2) permeance reaching 14 × 10−7 mol·Pa−1·m−2·s−1 and ideal selectivities of 20.3, 22.1, and 26.8 for H2/CO2, H2/N2, and H2/CH4, respectively, at 25 °C and 0.2 MPa. In comparison with the ZIF-8 membrane that was synthesised on a pure PDA modified layer, the H2 permeance increased by 14.8 %. Notably, the selectivity for H2/CO2 increased by almost threefold. Moreover, long-term stability tests demonstrated the durability and robustness of the ZIF-8 membranes under operational conditions.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"400 ","pages":"Article 135749"},"PeriodicalIF":6.7000,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0016236125014747","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

The development of high-performance hydrogen separation membranes is a crucial step in the advancement of sustainable energy technologies and the achievement of carbon neutrality. In this study, zeolitic imidazolate framework-8 (ZIF-8) membranes with an ultra-high selectivity for hydrogen over carbon dioxide were successfully synthesised on polydopamine/3-aminopropyltriethoxysilane (PDA/APTES) modified Al₂O₃ supports. The interfacial layer exhibited excellent adhesion and a high density of functional groups, which served as nucleation sites for the growth of ZIF-8 crystals. The resulting membranes exhibited a dense and defect-free structure, achieved through an optimised 12 h in-situ growth process. The membranes exhibited excellent gas separation performance, with hydrogen(H₂) permeance reaching 14 × 10⁻⁷ mol·Pa⁻¹·m⁻²·s⁻¹ and ideal selectivities of 20.3, 22.1, and 26.8 for H₂/CO₂, H₂/N_2, and H₂/CH₄, respectively, at 25 °C and 0.2 MPa. In comparison with the ZIF-8 membrane that was synthesised on a pure PDA modified layer, the H₂ permeance increased by 14.8 %. Notably, the selectivity for H₂/CO₂ increased by almost threefold. Moreover, long-term stability tests demonstrated the durability and robustness of the ZIF-8 membranes under operational conditions.

查看原文本刊更多论文

PDA/APTES改性氧化铝载体原位合成ZIF-8膜及其氢分离性能优化

高性能氢分离膜的开发是推进可持续能源技术和实现碳中和的关键一步。在本研究中，以聚多巴胺/3-氨基丙基三乙氧基硅烷（PDA/APTES）修饰的氧化铝为载体，成功合成了具有超高氢选择性的咪唑酸分子筛骨架-8 （ZIF-8）膜。界面层具有良好的附着力和高密度的官能团，为ZIF-8晶体的生长提供了成核位点。通过优化的12小时原位生长工艺，所得膜具有致密和无缺陷的结构。该膜具有优异的气体分离性能，在25℃和0.2 MPa下，H2/CO2、H2/N2和H2/CH4的理想选择性分别为20.3、22.1和26.8，氢气（H2）透过率达到14 × 10−7 mol·Pa−1·m−2·s−1。与在纯PDA修饰层上合成的ZIF-8膜相比，H2透过率提高了14.8%。值得注意的是，对H2/CO2的选择性提高了近三倍。此外，长期稳定性测试证明了ZIF-8膜在操作条件下的耐久性和稳健性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.