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- Title
Separation of Methane and Carbon Dioxide Gas Mixtures Using Activated Carbon Modified with 2‐Methylimidazole.
- Authors
Zhang, Xiao-Xin; Xiao, Peng; Chen, Guang-Jin; Sun, Chang-Yu; Yang, Lan-Ying
- Abstract
Abstract: Activated carbon was modified by loading 2‐methylimidazole (mIm), ethanol, and glycol onto its surface and adopted to capture CO2 using the absorption‐adsorption method. The modified activated carbon showed high selectivity for separating CH4+CO2 gas mixtures, compared with other methods to modify activated carbon given in the literature. The separation factor was 4.75 times higher than that for the fresh activated‐carbon system, and the separation performance of the activated carbon increased with increasing amount of mIm. The addition of glycol showed greater potential to enhance the selectivity of the activated carbon than ethanol. A recycling test verified the stability of the modified activated carbon for CH4+CO2 gas mixture separation.
- Subjects
GAS mixture analysis; ACTIVATED carbon testing; IONIC liquids; POLYETHYLENEIMINE; METAL-organic frameworks
- Publication
Chemical Engineering & Technology, 2018, Vol 41, Issue 9, p1818
- ISSN
0930-7516
- Publication type
Article
- DOI
10.1002/ceat.201700402