Product channel dynamics of the cyanato radical + nitric oxide reaction

Cooper, William F.; Park, Joonbum; Hershberger, John F.

doi:10.1021/j100115a033

Cited by 103 publications

(152 citation statements)

References 11 publications

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“…There are many indications that the reaction of CN + O2 is dominated by channel [I], whereas channel [3] is generally believed to be unlikely. Schmatjko and Wolfrum (2) monitored CO formed in channel [2] and estimated it to account for 6% of the total CN + O2 reaction rate at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Crossed-beam studies of radical reaction dynamics:

Macdonald¹,

Argonne²,

Sonnenfroh³

et al. 1994

Can. J. Chem.

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The title reaction has been studied in a crossed molecular beam apparatus. Both the product state distributions and the translational energy dependence of the reaction cross sections were measured under single collision conditions. Excellent agreement was found over a wide temperature range (26-3800 K) between rate constants deduced from the translational excitation function and recent thermal kinetic data. The rotational state distribution was found to be very cold compared to the reaction exothermicity, and could be described by a Boltzmann temperature of 1 10 K for all K-doublet levels. ' The vibronic state distribution was also found to be cold, with 70% of the products formed in the vibrational ground state. By comparing the molecular beam results for vibronic state distributions with those obtained from recent bulb experiments, it was conjectured that there appears to be a strong correlation between rotation in the reactants and bending excitation in the products.R. GLEN MACDONALD, KOPIN LIU, DAVID M. SONNENFROH et DI-JIA LIU. Can. J. Chem. 72,660 (1994). On a CtudiC la rCaction mentionnCe dans le titre i I'aide d'un appareil 6 faisceau molCculaire croisC. Utilisant des conditions de collision unique, on a CtudiC les distributions des Ctats des produits ainsi que la relation entre I'Cnergie de translation et les sections droites de la rCaction. Sur une large plage de tempkratures (26-3800 K), on a observC un excellent accord entre les constantes de vitesse obtenues i partir de la fonction d'excitation translationnelle et des donnCes rCcentes de cinCtique thermique. On a trouvC que la distribution de 1'Ctat rotationnel est trks froide si on la compare avec 1'exothermicitC de la rCaction et qu'on peut la dCcrire par une temperature de Boltzmann de 1 10 K pour tous les niveaux K-doublets. On a aussi trouvC que la distribution de I'Ctat vibronique est froide; en effet, 70% des produits se forment dans 1'Ctat vibrationnel fondamental. En comparant les rCsultats des faisceaux molCculaires pour les distributions de 1'Ctat vibronique avec ceux obtenus lors d'expkriences rCcentes avec des bulbes, on peut imaginer qu'il existe une forte corrilation entre la rotation des rCactifs et I'excitation de dCformation des produits.[Traduit par la rCdaction]

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Section: Introductionmentioning

confidence: 99%

Crossed-beam studies of radical reaction dynamics:

Macdonald¹,

Argonne²,

Sonnenfroh³

et al. 1994

Can. J. Chem.

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“…It has a rate constant of (3.2-3.4) × 10 −11 cm 3 molecule −1 s −1 at 296 K [17][18][19], with a moderate negative temperature dependence. The two product channels are formed in roughly equal yield [9,20], with φ 3a = 0.44 ± 0.07 and φ 3b = 0.56 ± 0.07 at 296 K. These branching ratios are virtually independent of temperature over the range 296-623 K [9].…”

Section: Product Branching Ratiosmentioning

confidence: 88%

“…For product molecule detection, infrared absorption spectroscopy was used as described in previous publications [9,10]. A tunable lead-salt diode laser provided the infrared probe radiation.…”

Section: Methodsmentioning

confidence: 99%

“…This reaction has been studied in several laboratories [9,[17][18][19][20]. It has a rate constant of (3.2-3.4) × 10 −11 cm 3 molecule −1 s −1 at 296 K [17][18][19], with a moderate negative temperature dependence.…”

Section: Product Branching Ratiosmentioning

confidence: 99%

“…For N 2 O and CO 2 , tabulated infrared absorption linestrengths are available [11], making absolute calibration straightforward, using formulae described in earlier publications [9,10]. These linestrengths have been checked by performing absorption measurements on static N 2 O and CO 2 gas, and found to be accurate to within 10% or better.…”

Section: Product Branching Ratiosmentioning

confidence: 99%

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Kinetics of HCCl + NO_x reactions

Baren

Erickson

Hershberger

2001

Int J of Chemical Kinetics

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The kinetics of reactions of HCCl with NO and NO 2 were investigated over the temperature ranges 298-572 k and 298-476 k, respectively, using laser-induced fluorescence spectroscopy to measure total rate constants and time-resolved infrared diode laser absorption spectroscopy to probe reaction products. Both reactions are fast, with k(HCCl + NO) = (2.75 ± 0.2) × 10 −11 cm 3 molecule −1 s −1 and k(HCCl + NO 2 ) = (1.10 ± 0.2) × 10 −10 cm 3 molecule −1 s −1 at 296 K. Both rate constants displayed only a slight temperature dependence. Detection of products in the HCCl + NO reaction at 296 K indicates that HCNO + Cl is the major product with a branching ratio of φ = 0.68 ± 0.06, and NCO + HCl is a minor channel with φ = 0.24 ± 0

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An exploratory investigation of the use of alkali metals in nitrous oxide control

Perry¹,

Miller

1996

Int. J. Chem. Kinet.

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Using chemical kinetic modeling, we have investigated the feasibility of using sodium hydroxide (a representative alkali‐metal compound) to control nitrous oxide emissions from combustion sources. The key reaction is where the sodium atom is produced by the reaction when small amounts of fuel are added to lean combustion products. Because sodium hydroxide is regenerated by one sodium atom is potentially capable of destroying several N2O molecules. The mechanism is discussed in detail. Moreover, we have studied the possibility of using NaOH in conjunction with RAPRENOX (cyanuric acid injection) to control NO x emissions without producing N2O as a by‐product. The results are discussed at length. © 1996 John Wiley & Sons, Inc.

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Product channel dynamics of the cyanato radical + nitric oxide reaction

Cited by 103 publications

References 11 publications

Crossed-beam studies of radical reaction dynamics:

Crossed-beam studies of radical reaction dynamics:

Kinetics of HCCl + NO_x reactions

An exploratory investigation of the use of alkali metals in nitrous oxide control

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Product channel dynamics of the cyanato radical + nitric oxide reaction

Cited by 103 publications

References 11 publications

Crossed-beam studies of radical reaction dynamics:

Crossed-beam studies of radical reaction dynamics:

Kinetics of HCCl + NOx reactions

An exploratory investigation of the use of alkali metals in nitrous oxide control

Contact Info

Product

Resources

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Kinetics of HCCl + NO_x reactions