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选择性CO2从CO2/N2气体混合物中捕获,使用四甲基化水合物

Hyeonjin Kim¹, Yun-Ho Ahn¹

¹Department of Chemical Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea.

Molecules (Basel, Switzerland)

|March 28, 2024

概括

甲基化物 (TBAF) 在室温下促进气体水合物形成,使得可从气体混合物中选择性捕获二氧化碳 (CO2). 这为二氧化碳的分离和储存提供了一种节能方法.

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:

气体水合物是包含化合物,具有气体储存和分离的潜力.
传统的气体水合物形成需要能源密集的高压和低温条件.
开发热力学促进剂可以在较温和的条件下使水合物形成.

研究的目的:

为了研究四甲基化物 (TBAF) 作为气体水合物形成的热力学促进剂的使用.
评估基于TBAF的 CO2/N2 混合物中的半克拉酸的二氧化碳分离能力.
为了确定TBAF水合物系统的气体储存能力和二氧化碳选择性.

主要方法:

使用四甲基化物 (TBAF) 形成半克拉酸盐类型的水合物.
系统地调查了TBAF的水合物形成率和气体储存能力.
从CO2/N2气体混合物中分析了CO2分离的选择性.

主要成果:

在室温下,TBAF使气体水合物形成和二氧化碳捕获成为可能.
在TBAF中,水合物表现出有选择性的二氧化碳捕获行为.
对于具有80%CO2料的特定TBAF水合物化合物,达到2.36和2.38mmol/mol的最大气体储存容量.

结论:

对于从CO2/N2混合物中分离二氧化碳,TBAF水合物系统是可行的.
使用TBAF作为促进剂可实现节能,室温二氧化碳的捕获.
本研究提供了支持TBAF水合物在二氧化碳分离技术中的应用的数据.

关键词:

在CO2/N2分离过程中.选择性的二氧化碳捕获.半密封酸水合物半密封酸水合物四甲基氨酸化物四甲基氨酸.热力学热力学热力学

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