高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (8): 20260004.doi: 10.7503/cjcu20260004

• 物理化学 • 上一篇    下一篇

拟荷叶层设计增强13X沸石的表面疏水性和CO2吸附性能

李室庆1, 王卓2, 张斌1, 曾兵芳3, 阮祥辉1(), 吕梦岚1()   

  1. 1.贵州大学化学与化工学院,贵州省能量转换与存储技术工程研究中心, 贵阳 550025
    2.贵州理工学院资源与环境工程学院, 贵阳 550003
    3.贵州工程应用技术学院化学工程学院, 毕节 551700
  • 收稿日期:2026-01-01 出版日期:2026-08-10 发布日期:2026-05-14
  • 通讯作者: 阮祥辉,吕梦岚 E-mail:xhruan@gzu.edu.cn;mllv@gzu.edu.cn
  • 基金资助:
    国家自然科学基金(31960211);国家自然科学基金(81960651);贵州省高层次创新型人才基金(批准号: QKHPTRC-GCC[2023]-024), 贵州省自然科学基金(批准号: QKHPTRC-CXTD[2023]005)、 贵州大学引进人才科研项目(批准号: [2023]33)、 贵州大学基础研究项目(批准号: [2023]18)和贵州省能源智能开发与高效利用实验室开放基金(GEL-KY-2025-012)

Pseudo Lotus Leaf Layered Design to Enhance the Surface Hydrophobicity and CO2 Adsorption Capability of 13X Molecular Sieve

LI Shiqing1, WANG Zhuo2, ZHANG Bin1, ZENG Bingfang3, RUAN Xianghui1(), LYU Menglan1()   

  1. 1.Engineering Research Center for Energy Conversion and Storage Technology of Guizhou,School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China
    2.School of Resources and Environmental Engineering,Guizhou Institute of Technology,Guiyang 550003,China
    3.College of Chemical Engineering,Guizhou University of Engineering Science,Bijie 551700,China
  • Received:2026-01-01 Online:2026-08-10 Published:2026-05-14
  • Contact: RUAN Xianghui, LYU Menglan E-mail:xhruan@gzu.edu.cn;mllv@gzu.edu.cn
  • Supported by:
    the Open Fund of Guizhou Provincial Laboratory of Intelligent Development and Efficient Utilization of Energy, China(GEL-KY-2025-012);the National Natural Science Foundation of China(52373175);the High-level Innovative Talents Foundation of Guizhou Province, China(No.QKHPTRC-GCC[2023]-024), the Natural Science Foundation of Guizhou Province, China(No.QKHPTRC-CXTD[2023]005), the Guizhou University Introduces Talent Scientific Research Project, China([2023]33);the Basic Research Program of Guizhou University, China([2023]18)

摘要:

通过拟荷叶层结构设计, 在13X分子筛表面构建聚苯乙烯-甲基丙烯酸甲酯(PS-PMMA)疏水层, 制备了PS-PMMA/13X分子筛. 通过集成有机纳米表面结构拟荷叶层的方法, PS-PMMA与13X分子筛复合过程的条件温和, 不破坏分子筛晶体结构, 所得PS-PMMA/13X分子筛可耐370 ℃高温, 水接触角提升至127.6°. 该方法赋予了13X分子筛卓越的疏水性, 同时保持了其固有的吸附性能. 静态吸附实验结果表明, PS-PMMA0.05/13X分子筛对CO2吸附遵循Langmuir模型并表现为物理吸附; 经6 h浸水-干燥处理后在10次循环中仍保持超过92%的吸附容量. 此外, 在15%相对湿度和15%(体积分数)CO2的模拟湿烟气条件下, 其CO2吸附容量达0.045 g/g, 比未改性13X分子筛提高73%, 有效抑制了水汽的竞争吸附. PS-PMMA0.05/13X分子筛在高温、 低浓度及湿润环境中均表现出优异的CO2吸附性能, 且制备方法简单, 具有良好的工况碳捕集应用潜力.

关键词: 13X分子筛, 表面改性, 二氧化碳捕集

Abstract:

A polystyrene-poly(methyl methacrylate)(PS-PMMA) hydrophobic layer was constructed on the surface of 13X molecular sieve and PS-PMMA/13X molecular sieve was prepared via a biomimetic lotus-leaf-like structural design. By integrating an organic nanoscale surface architecture, the fabrication of PS-PMMA/13X molecular sieve was achieved under mild conditions without disrupting the crystalline framework of the 13X molecular sieve, while maintaining thermal stability up to 370 ℃. The water contact angle increased to 127.6°, indicating significantly enhanced hydrophobicity. The modified 13X molecular sieve exhibited excellent water resistance while preserving its intrinsic adsorption properties. Static adsorption results revealed that CO2 adsorption on PS-PMMA0.05/13X follows the Langmuir model and is dominated by physisorption. After 6 h of water immersion followed by drying, the material retained over 92% of its adsorption capacity after ten cycles. Furthermore, under simulated humid flue gas conditions[15% relative humity(RH) and 15%(volume fraction) CO2], the CO2 adsorption capacity reached 0.045 g/g, representing a 73% increase compared to pristine 13X molecular sieve, effectively suppressing competitive adsorption from water vapor. The PS-PMMA0.05/13X molecular sieve demonstrates excellent CO2 adsorption performance under high temperature, low concentration, and humid conditions. With a simple preparation method and robust performance, it shows strong potential for practical carbon capture applications.

Key words: 13X molecular sieve, Surface modification, Carbon dioxide capture

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