Polyethylene-glycol-dimethylether

In the physical absorption process, the CO2 is absorbed in a solvent according to Henry s Law and then regenerated using heat, pressure reduction or both heat and pressure reduction. Typical solvents are Selexol (dimethylether of polyethylene glycol) and Rectisol (cold methanol) which are applied at high pressure. At lower pressures, the chemical absorption processes are more economical. The Selexol physical solvent process is frequently specified for coal gasification applications199. 

PC/EC/polyacryl onitrile gel Polyethylene-glycol-dimethylether (350 MW) with fumed silica LiTFSI, LiTiiflate, LiPF 5-15 wt.% 30 0.001-0.005 (18)... 

The treating solution used in the Selexol process is a mixture of homologues of the dimethylether of polyethylene glycol. This material has been shown to be chemically. stable as well as non-toxic and biodegradable. It has a very low vapor pressure as well as a high capacity for various impurities, including H2S, CO2, COS, mercaptans, and others. 

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