Influence of CO-evolving groups on the activity of activated carbon fiber for SO_2 removal

摘要

An investigation was made into the influence of CO-evolving and C0_2-evolving groups on the activities of activated carbon fibers (ACFs) for the oxidative conversion of S0_2 into aq. H_2SO_4 in the presence of O_2 and H_2O. The results indicated that the amount of evolved CO determined the S02 removal activity of ACFs, whereas, the amount of evolved C0_2 did not correlate with the ACFs activity for S02 removal. A direct proportionality between the amount of evolved CO and the enhanced activity of S0_2 removal was confIrmed by using different oxidizing agents for changing the types and amount of oxygen functional groups in ACFs.