Infrared studies of SO2 on carbons—II. the SO2 species adsorbed on carbon films

✍ Scribed by Jerzy Zawadzki

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 934 KB
• Volume: 25
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(87)90190-4

✦ Synopsis

Ah&act--IR spectroscopic studies were carried out on the character of interactions between adsorbed molecules of SO, and OIt II,0 or H2S on the surface of carbons. The character of bonding between adsorbed molecules and the carbon films depends on the chemical structure of the surface functionai groups. Weakly adsorbed SOL gives rise to the bands at 1330 and 1140 cm-'. Strongly held SO* is indicated by the band around 1045 cm-'. Catalytic activity of carbon films in the oxidation of aqueous sulfur dioxide solution has been studied. The results suggest that superoxide ions take part in the adsortion of acids on the surface of carbon as well as in the catalytic oxidation of aqueous SO, solution by 0,.