探索膜气体分离在等离子催化CO2分裂后对CO度的潜力
Daria Miroshnichenko1, Evgenia Grushevenko1,2, Maxim Shalygin1
1A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky Pr., 29, Moscow 119991, Russia.
Membranes
|December 24, 2025
概括
本研究提出了一种新的膜分离方案,用于从二氧化碳 (CO2) 和氧 (O2) 混合物中净化一氧化碳 (CO),这些混合物是通过等离子催化CO2分裂产生的. 开发的过程实现了99%的纯碳,有助于减少碳足迹的努力.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 环境技术 环境技术
背景情况:
- 减少碳足迹需要利用二氧化碳的技术,例如等离子体催化分解成CO和O2.
- 有效地分离产生的CO2/CO/O2混合物是一个重大挑战.
研究的目的:
- 开发一套全面的膜分离方案,从等离子处理的CO2中生产高纯度的CO缩物.
- 为了优化二氧化碳回收率和能源消耗之间的平衡.
主要方法:
- 使用二氧化碳选择性M-PEG膜,然后使用PSF空心纤维膜进行序列膜分离.
- 对CO2/CO和O2/CO的二氧化碳透性和选择性的测量.
- 一个三阶段的过程,包括二氧化碳等离子溶解后的循环和度.
主要成果:
- 实现了99mol%的CO流纯度.
- 碳化合物回收率在47.9%至69.4%之间.
- 具体能源消耗计算在30.31-0.83 kWh/m3之间;对于M-PEG和PSF,所需的膜面积不同.
结论:
- 拟议的膜分离方案有效地从CO2等离子体分解产物中产生高纯度的CO.
- 这项技术为二氧化碳利用和有价值的化学品生产提供了可行的途径.
- 该研究表明了膜技术在解决环境应用复杂气体混合物分离方面的潜力.
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