Shock tube study of the reaction hydrogen atom + oxygen .fwdarw. hydroxyl + oxygen atom using hydroxyl laser absorption

摘要: Mixtures of hydrogen and oxygen dilute in argon were heated by both incident reflected shock waves to measure the rate coefficient H{sub 2}/O{sub 2} mechanism branching reaction H + O{sub {yields} OH O (2) temperature range 1,450-3,370 K. Time histories OH(X{sup 2}II) monitored using narrow-line-width laser absorption at 306.7 nm. A detailed kinetic analysis data rich mixtures yielded following expression: k{sub = (9.33 {plus minus} 0.40) {times} 10{sup 13} exp({minus}(14,800 170) cal mol{sup {minus}1}/RT, K) cm{sup 3} {minus}1} s{sup {minus}1}.