Study on Polydimethylsiloxane Desorption Membrane of CO2- Dimethyl carbonate System

Global warming is a topic of great concern all over the world. The current CO2 capture methods, such as absorption, cryogenic separation, adsorption, etc., may have some deficiencies in capture cost and device investment. A novel solvent- absorption coupled membrane-desorption process is expected to be one of candidate with industrial feasibility. The membrane reported in the literature has great potential for improvement. In this paper, membrane modification was carried out from dissolution activity, the diffusion activity and the reaction activity. Compared with the literature data, the flux (5144g·m-2·h-1) and enrichment factor (36.5) of membrane made in this work has been significantly improved.