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Rate constants for quenching of O2(1Δg) with sulfur compounds

✍ Scribed by Nalini Raja; J. P. S. Chatha; P. K. Arora; K. G. Vohra

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 334 KB
Volume: 16
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550160303

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✦ Synopsis

The rate constants for the quenching of O,('Ag) with carbon disulfide, dimethyl sulfide, dimethyl disulfide, diallyl disulfide, ethyl mercaptan, and thiophene have been determined in a discharge flow system in the absence of oxygen atoms. The rate constants are found to be (6.5 2 0.6) x lo4, (1.8 2 0.2) x lo4, and (3.5 -t 0.6) x lo3 L/mol . s for dimethyl sulfide, ethyl mercaptan, and thiophene, respectively. The other compounds have rate constants ~9 . 9 x 10, L/mol . s. In the case of dimethyl sulfide, even when NO, concentration is more than what is required to remove oxygen atoms completely, the rate constants are found to vary with different amounts of NO,. No correlation is found to exist between the logarithm of the rate constants and the ionization potentials of the compounds.

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