Browsing by Author "Mack, G. P. R."

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    Reaction of Oxygen Atoms with Carbonyl Compounds: Part 1.—Formaldehyde
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (1), 1973) Mack, G. P. R.; Thrush, B. A.
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    Reaction of Oxygen Atoms with Carbonyl Compounds: Part 2.—Acetaldehyde
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1974, 70 (1-6), 1974) Mack, G. P. R.; Thrush, B. A.
    The reaction of excess atomic oxygen with acetaldehyde in a discharge-flow system has been studied at temperatures between 195 and 573 K. Kinetic studies and product analyses establish the mechanism to be O + CH3CHO → CH3CO + OH (1), O + OH → O2+ H (2), O + CH3CO → CH3+ CO2(9), O + CH3→ H2CO + H (7) followed by reaction between oxygen atoms and formaldehyde. At 573 K, the reduction of the carbon dioxide yield on increasing the pressure from 1 to 10 Torr is caused by unimolecular decomposition of acetyl radicals. At 300 K, k1=(2.88 ± 0.3)× 1011 cm3 mol–1 s–1.
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    Reaction of Oxygen Atoms with Carbonyl Compounds: Part 3.—Ketene
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1974, 70 (1-6), 1974) Mack, G. P. R.; Thrush, B. A.
    The reaction between excess atomic oxygen and ketene has been studied in a discharge flow system by product analysis and kinetically using e.p.r. and chemiluminescence. This rate constant for the initial step, which yields predominantly HCO + HCO was found to be (3.4 ± 0.3)× 1011 cm3 mol–1 s–1 at 293 K. The subsequent reactions are O + HCO → OH + CO (3), O + HCO → H + CO2(4), H + HCO → H2+ CO (5), O + OH → O2+ H. (6)