Purerly theoretical question: i have read about mechanism of HI/P reduction(please skip bad assotiations with this reaction, no i do not want to have
legal problems) and phosphorous is used to convert iodine back to hydroidic acid.
So would be possible to use other reductant to convert I2 back to HI?
Ascorbic acid can convert I2 to HI, the question is if it would not be destroyed in harsh conditions of this reaction before regeneration of HI.
Or SO2 in form of pyrosulfate? Thiosulfate would decompose liberating SO2 and elemental sulphur which is not good.
H2S can convert iodine to hydroiodic acid, it is toxic and more difficult to handle than phosphorous but we can consider it theoretically.
Or maybe electrochemical conversion of I2 back do HI? |