二氧化碳的结构-性质关系2 吸收核心外微粒与封装的离子液体
Ai-Nhan Au-Duong1, Asem Abdulahad1
1Department of Chemistry, Xavier University of Louisiana, New Orleans, Louisiana 70125-1056, United States.
ACS omega
|July 10, 2023
概括
开发了封装离子液体的新型微粒[EMIM][DCA],用于二氧化碳 (CO2) 捕获. 贝中50/50的β-米尔和烯混合物显示出最佳的二氧化碳吸附,显示出对隔离应用的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 对于高效的二氧化碳 (CO2) 捕获技术的需求日益增长.
- 需要具有高气体透性和离子液体内置的先进材料.
- 离子液体 (ILs) 显示出具有选择性二氧化碳封存的潜力.
研究的目的:
- 开发用于选择性二氧化碳捕获的新型IL封装微粒.
- 研究共聚合物外组成对IL封装和CO2吸附的影响.
- 为了确定最佳的微粒设计,以增强二氧化碳封存.
主要方法:
- 制造IL封装的微粒,使用不含β-米尔和烯的乳液聚合.
- 使用TGA,DSC,SEM和TEM进行微粒的表征.
- 使用TGA仪器进行重量计CO2吸附实验.
主要成果:
- 微粒子合成产生了不同的[EMIM][DCA]封装效率,基于β-米/烯比率.
- 热性质 (稳定性,玻璃过渡) 取决于共聚合物外的组成.
- 一个50/50的β-米尔/烯比率微粒在20分钟内表现出最佳的二氧化碳吸附能力 (~0.5 mmol CO2/g).
- 由于孔径变化,观察到IL负载和CO2吸收之间的权衡.
结论:
- 含有β-米尔和 styrene 的核心外微囊为二氧化碳封存提供了一个有希望的平台.
- 优化的微粒设计平衡了IL封装,多孔性和二氧化碳吸附.
- 这些材料为从气体混合物中选择性捕获二氧化碳提供了可行的解决方案.
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