Rate constants for the reactions O + C2H2 and O + C2D2 .fwdarw. products, over the temperature range .apprx.850-1950 K, by the flash photolysis-shock tube technique. Determination of the branching ratio and a further theoretical analysis

Experimental and modeling study of shock‐tube oxidation of acetylene

“…Reduction of k 7b by a factor of 3 from the base expression leads to k XIX 7b = 3.3 × 10 12 cm 3 mol −1 s −1 . As mentioned earlier, recommendations [23,34,[102][103][104][105][106][107][108][109][110][111][112][113][114][115][116][117][118] for the total rate coefficient of reaction (21) are in a reasonable agreement with each other (Fig. 6), yet there is a significant scatter in the branching ratio of this reaction [17,101,119] (21) essentially unchanged.…”

“…, Sullivan and Warneck [102]; ×, Niki [103]; , Brown and Thrush [104]; ------, James and Glass [105]; --, Hoyermann et al [106]; --, Westenberg and de Haas [107]; , Stuhl and Niki [108]; ----, Peeters and Mahnen [109]; -· · ·-, Vandooren and Van Tigglen [110]; ∇, Westenberg and de Haas [111]; --, Aleksandrov et al [112]; ---∇---, Lohr and Roth [113]; --, Homann and Wellman [114]; -+-, Frank et al [34]; ---, Mahmud and Fontijn [115]; ---• ---, Russell et al [116]; --, Bohn and Stuhl [117]; ----, Michael and Wagner [118]; -• -, GRI-Mech 3.0 [23]. oxidation of acetylene by Hidaka et al [24].…”

Quantum Chemical and Theoretical Kinetics Study of the O(3P) + C2H2 Reaction: A Multistate Process

“…Consequently, the H( 2 S) + HCCO(X 2 A′′) products yield is theoretically expected to dominate the CH 2 (X 3 B 1 ) + CO yield, in accord with experiment. [7][8][9] It should be mentioned that in their theoretical studies, Gigard and Chaquin 23 reported the ring structures that could result from C 2 H 2 + O( 3 P) to lie very high in energy on the triplet surface, such that they are not expected to play any role in the reaction. 3 A′ Electronic State Surface.…”

An experimental and modeling study of the oxidation of acetylene in a flow reactor

“…Based on different studies [29][30][31], Miller et al [21] chose a branching ratio α = k 11 /(k 11 + k 12 ) of 0.3. The values for the rate constants agree reasonably or fairly well with the values reported in other works [29][30][31][32] and with the fact that the channel corresponding to reaction (11) should be faster than the channel of reaction (12), as was found by the same authors.…”