Experimental study on the reaction of CCl3F and CH4 in a dielectric barrier discharge nonequilibrium plasma reactor
Kundu, S.K., Kennedy, E.M., Mackie, J.C., Holdsworth, C.I., Molloy, T.S., Gaikwad, V.V. and Dlugogorski, B.Z. (2016) Experimental study on the reaction of CCl3F and CH4 in a dielectric barrier discharge nonequilibrium plasma reactor. Industrial & Engineering Chemistry Research, 55 (2). pp. 463-471.
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The reaction of CCl3F (CFC-11) with CH4 (in an argon bath gas) in a dielectric barrier discharge nonequilibrium plasma was examined. Oxygen and nitrogen were excluded from the feed stream and the reactions resulted in the production of fluorine-containing polymers, as well as a range of gaseous products including H2, HCl, HF, C2H3F, C2H3Cl, C2H2ClF, CHCl2F, CCl2F2, CH3Cl, CH2Cl2, CHCl3, and C2Cl4. The polymeric material synthesized during reaction is characterized as being non-cross-linked and random in nature, containing functional groups including CH3, CH2, CHCl, CHF, CF2, and CF3. The conversion level of CCl3F increased from 37% to 63% as the input energy density increased from 3 to 13 kJ L-1 (the applied voltage range was 14.1 to 15.2 kV, peak-peak). The electrical discharge was characterized and found to be a slight modification of filamentary discharge toward a diffuse discharge due to the presence of the relatively low concentration of CCl3F and CH4 (less than 2% each) in argon. A reaction mechanism is proposed describing the formation of gas phase, as well as polymeric products.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Engineering and Information Technology|
|Publisher:||American Chemical Society|
|Copyright:||© 2015 American Chemical Society.|
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