The mercury-sensitized oxidation of carbon monoxide

✍ Scribed by R. Simonaitis; Julian Heicklen

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 1021 KB
• Volume: 3
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550030404

✦ Synopsis

The mercury-photosensitized oxidation of CO was studied at 275°C over a wide range of [02]/[CO] ratios in the absence and presence of the oxygen atom scavenger 2-trifluoromethylpropene (TMP) and at 25' C at low [02]/[CO] ratios in the presence of TMP. By following the quantum yield of COZ production, @ { COz), as a function of the [02]/[CO] ratio, the reactions of vibrationally excited CO (ZJ 5 9) and electronically excited 0 2 , probably in the clX; state, were studied. At low [O,]/[CO] ratios the predominant reactions are of vibrationally excited CO ( v 5 9). Relative rate constants for chemical reaction versus deactivation of CO (ZJ 5 9) were obtained. At higher [02]/[CO] ratios, the principal reactions are of electronically excited 0 2 . Relative rate constants for chemical reactions and deactivation of this electronically excited 0 2 with CO, 0 2 , and TMP were obtained. From the effect of total pressure on @{ COz), it is proposed that an intermediate C o t is formed in the reaction of electronically excited 0 2 with CO.