Carbon Membranes Ltd

Barbieri G., Bernardo P. Carbon dioxide capture and storage in deep geologic formations, in D.C. Thomas and S.M. Benson (eds.), GRACE Experimental Evaluation of Hydrogen Production by Membrane Reaction, Vol. 1, Chapter 22, Elsevier Ltd., Oxford, U.K., 2005, pp. 385 07. 

Figure 11,4 CO2 permeability in PDMS under mixed gas conditions with (grey) and without (black) 500 ppm or H2S present. Reprinted with permission from Journai of Membrane Science, The effect of hydrogen sulfide, carbon monoxide and water on the performance of a PDMS membrane in carbon dioxide/nitrogen separation by Colin Scholes, Sandra Kentish and Ceoff Stevens, 350, 1-2, 189-199, Copyright (2010) Elsevier Ltd...

Dow Chemical Co., Asahi Chemical Co. and Chloride Engineers Ltd. make a similar product. The polymer membrane only conducts H" " when fully hydrated and one solution to this problem has been to use carbon fiber wicks (Figure 23.9). SGL Carbon is making fiber based gas diffusion layers in a roll form. The cell is sensitive to low levels of CO, which can be removed by a Pt/Ru catalyst, but the high cost restricts use. However, a later technique to increase the surface area has reduced the cost by a factor of 75. 

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