The kinetics and the mechanism of the oxidation of carbon monoxide in the presence of hydrogen

✍ Scribed by A. M. Arustamyan; I. K. Shakhnazaryan; A. G. Philipossyan; A. B. Nalbandyan

• Publisher: John Wiley and Sons
• Year: 1980
• Tongue: English
• Weight: 853 KB
• Volume: 12
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550120106

✦ Synopsis

The kinetics of the slow oxidation of CO in the presence of Hz have been studied above the second explosion limit for the mixture 2CO + 0 2 + X% Hz a t the temperature range of 53O-57O0C, pressures from 300 to 530 torr, and hydrogen contents of 1.1,2.8, and 5.7%. The second explosion limit has been experimentally determined for the mixture of 2CO + 0 2 containing 1.0,3.0, and 5.7% Hz. On the basis of the oxidation scheme of CO in the presence of Hz, which includes the accepted mechanism of oxidation of hydrogen supplemented by the reactions in which CO takes part, the second explosion limit and the profiles of the slow reaction are calculated by computer methods. The agreement found between experimental and calculated values allows one to conclude that the scheme under consideration rather completely described the slow reaction above the second limit and the occurrence of the second explosion limit in the mixture CO-02-Hz. The rate constant for the reaction HOy + CO -OH + COz was calculated from the experimental data and was found to agree with previous determinations.