辽宁石油化工大学学报2025，Vol.45Issue(5)：9-17,9.DOI:10.12422/j.issn.1672-6952.2025.05.002
变色酸接枝18-冠-6-醚改性聚乙烯醇阴离子交换膜的制备及性能分析
Preparation and Performance Analysis of Anion Exchange Membranes Modified with Chromotropic Acid Grafted 18-Crown-6 Ether on Polyvinyl Alcohol
摘要
Abstract
The quaternary ammonium group(QA)commonly used in conventional anion exchange membranes(AEMs)has a low dissociation constant with OH-,resulting in poor conductivity.The crown ether group can significantly enhance the ion exchange capacity(IEC)and OH-conduction efficiency of AEMs due to its ability to form positively charged complexes with alkali metal cations.Meanwhile,the ether bond in the crown ether ring exhibits good alkali and chemical stability.In view of the above advantages,a series of AEMs grafted with bi-crown ethers were successfully prepared by grafting dibenzo-18-crown-6-ether-modified polyvinyl alcohol(PVA)via metastable acid.The results showed that the bi-crown ether anion-exchange membranes exhibited higher OH-selectivity and chemical stability compared with the mono-crown ether membrane materials;the prepared AEMs exhibited good OH-selectivity and chemical stability in terms of electrical conductivity(conductivity of 165.5 mS/cm at 80℃),mechanical properties(tensile strength of 47 MPa at room temperature),and alkali stability(only 4.52%decrease in conductivity after immersion in KOH at a concentration of 6 mol/L for 168 h),and the high efficiency electrolysis of water to produce hydrogen based on platinum charcoal as the anode material,and the efficiency of electrolytic reduction reached 80%.关键词
电解水制氢/阴离子交换膜/二苯并-18-冠-6-醚/聚乙烯醇/电导率Key words
Electrolysis of water for hydrogen production/Anion exchange membrane/18-Crown-6 ether/Polyvinyl alcohol/Conductivity分类
化学化工引用本文复制引用
张宁达,王璐璐,张扬,张帆,王吉林..变色酸接枝18-冠-6-醚改性聚乙烯醇阴离子交换膜的制备及性能分析[J].辽宁石油化工大学学报,2025,45(5):9-17,9.基金项目
辽宁省应用基础研究计划项目(2023JH2/101300217) （2023JH2/101300217）
辽宁省创新人才支持项目(LR2019038) （LR2019038）
辽宁省教育厅高等学校基本科研项目(青年项目)(JYTQN2023350,JYTQN2023347) （青年项目）
辽宁石油化工大学引进人才科研启动基金项目(2023XJJL-011,2023XJJL-010). （2023XJJL-011,2023XJJL-010）
