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O2(b1Σg+) Removal by H2, CO, N2O, CH4, and C2H4 in the 300–800 K Temperature Range
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2018-05-30 00:00:00 , DOI: 10.1021/acs.jpca.8b03122 M. V. Zagidullin 1, 2 , N. A. Khvatov 1, 2 , G. I. Tolstov 1 , I. A. Medvedkov 1 , A. M. Mebel 1, 3 , M. C. Heaven 1, 4 , V. N. Azyazov 1, 2
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2018-05-30 00:00:00 , DOI: 10.1021/acs.jpca.8b03122 M. V. Zagidullin 1, 2 , N. A. Khvatov 1, 2 , G. I. Tolstov 1 , I. A. Medvedkov 1 , A. M. Mebel 1, 3 , M. C. Heaven 1, 4 , V. N. Azyazov 1, 2
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Rate constants for the removal of O2 b1Σg+ by collisions with species relevant to combustion, H2, CO, N2O, CH4 and C2H4 have been measured in the temperature range 297–800 K. O2(b1Σg+) was produced from ground-state molecular oxygen by photoexcitation pulses from a tunable dye laser, and the deactivation kinetics were followed by observing the temporal behavior of the b1Σg+–X3Σg– fluorescence. The removal rate constants for H2, CO, N2O, CH4, and C2H4 could be represented by the modified Arrhenius expressions kH2 = (1.44 ± 0.02) × 10–16T1.5 exp[(0 ± 10)/T], kCO = (6.9 ± 0.4) × 10–24T3 exp[(939 ± 33)/T], kN2O = (2.63 ± 0.14) × 10–18T1.5 exp[(590 ± 26)/T], kCH4 = (3.5 ± 0.2) × 10–17T1.5 exp[(−220 ± 24)/T], and kC2H4 = (2.34 ± 0.10) × 10–20T2.5 exp[(680 ± 16)/T] cm3 molecule–1 s–1, respectively. All of the rate constants measured at room temperature were found to be in good agreement with previously reported values, whereas the values at elevated temperatures up to 800 K were systematically measured for the first time.
中文翻译：
Ô 2（B 1 Σ克+）由H去除2，CO，N 2 O，CH 4和C 2 H ^ 4在300-800 K温度范围
用于除去O速率常数2 b 1 Σ克+通过与碰撞相关的燃烧物种，H 2，CO，N 2 O，CH 4和C 2 H ^ 4已在温度范围297-800 K. O经过测量2（b 1 Σ克+）从基态分子氧产生通过光激励脉冲从可调谐染料激光器，和去激活动力学随后观察b的时间行为1 Σ克+ -X 3 Σ克-荧光。H 2，CO，N 2 O，CH 4和C 2 H 4的去除速率常数可以用修正的Arrhenius表达式表示：k H 2 =（1.44±0.02）×10 –16 T 1.5 exp [（0± 10）/ T ]，k CO =（6.9±0.4）×10 –24 T 3 exp [（939±33）/ T ]，k N 2 O =（2.63±0.14）×10 –18 T 1.5 exp [（ 590±26）/ T ]，k CH 4=（3.5±0.2）×10 –17 T 1.5 exp [（-220±24）/ T ]，而k C 2 H 4 =（2.34±0.10）×10 –20 T 2.5 exp [（680±16）/ T ] cm 3分子分别为–1 s –1。发现在室温下测得的所有速率常数均与先前报道的值高度吻合，而首次对系统在高达800 K的高温下的值进行了系统测量。
更新日期：2018-05-30
中文翻译：
Ô 2（B 1 Σ克+）由H去除2，CO，N 2 O，CH 4和C 2 H ^ 4在300-800 K温度范围
用于除去O速率常数2 b 1 Σ克+通过与碰撞相关的燃烧物种，H 2，CO，N 2 O，CH 4和C 2 H ^ 4已在温度范围297-800 K. O经过测量2（b 1 Σ克+）从基态分子氧产生通过光激励脉冲从可调谐染料激光器，和去激活动力学随后观察b的时间行为1 Σ克+ -X 3 Σ克-荧光。H 2，CO，N 2 O，CH 4和C 2 H 4的去除速率常数可以用修正的Arrhenius表达式表示：k H 2 =（1.44±0.02）×10 –16 T 1.5 exp [（0± 10）/ T ]，k CO =（6.9±0.4）×10 –24 T 3 exp [（939±33）/ T ]，k N 2 O =（2.63±0.14）×10 –18 T 1.5 exp [（ 590±26）/ T ]，k CH 4=（3.5±0.2）×10 –17 T 1.5 exp [（-220±24）/ T ]，而k C 2 H 4 =（2.34±0.10）×10 –20 T 2.5 exp [（680±16）/ T ] cm 3分子分别为–1 s –1。发现在室温下测得的所有速率常数均与先前报道的值高度吻合，而首次对系统在高达800 K的高温下的值进行了系统测量。
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