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Rate Constants of CH 4 + MCH 3 + H + M and CH 3 OH + MCH 3 + OH + M over 1400–2500 K
Author(s) -
Koike T.,
Kudo M.,
Maeda I.,
Yamada H.
Publication year - 2000
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(2000)32:1<1::aid-jck1>3.0.co;2-c
Subject(s) - chemistry , reaction rate constant , analytical chemistry (journal) , value (mathematics) , kinetics , organic chemistry , physics , quantum mechanics , machine learning , computer science
Rate constant k 1 of CH 4 + MCH 3 + H + M was determined from time profiles of IR emission at 3.4 μm obtained for a CH 4 /Ar mixture heated by incident shock waves at pressures 0.40–0.82 atm and temperatures 1400–2500 K. The emission decrease due to CH 4 decay in a very short period at the shockfront was investigated. Computer modeling for the decrease gave the k 1 value as: 3.0 × 10 16 exp(−81.0 kcal/RT) cm 3 mol −1 s −1 . The k 1 value was almost the same as those reported by all authors except for the report by Klemm et al. The same technique was used for determining the rate constant k 2 of CH 3 OH + MCH 3 + OH + M and a new value was proposed as k 2 = 4.2 × 10 16 exp(−66.8 kcal/RT) cm 3 mol −1 s −1 . © 2000 John Wiley & Sons, Inc. Int J Chem Kinet 32: 1–6, 2000