Flow-tube kinetics study of the reaction between ground-state hydrogen atoms and nitromethane

Journal Article · Thu Sep 05 00:00:00 EDT 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100171a044· OSTI ID:5183847

Ko, Taeho; Flaherty, W F; Fontijn, A ^[1]

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1. Rensselaer Polytechnic Inst., Troy, NY (United States)

The kinetics of the H + CH{sub 3}NO{sub 2} reaction have been studied by using a discharge-flow resonance-fluorescence technique. H atoms are produced from microwave discharges through NH{sub 3}Ar mixtures. The data in the 360-570 K range are well fitted by the empirical expression k(T) = 7.8 {times} 10{sup {minus}12} exp(-1878K/T) cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}. Precision of the data varies from {plus minus} 6 to {plus minus} 11%, and the resulting accuracy is estimated to be better than {+-} 20%, where both figures represent 2{sigma} statistical confidence intervals. Results of some experiments where h{sub 2} was discharged indicate that the channel leading to OH and CH{sub 3}NO is significant for the reaction. A comparison of the kinetics of several reactions where a methyl-group hydrogen is abstracted by H atoms indicates that such a channel is not important in the present work but could become significant at elevated temperatures. To confirm the accuracy achieved with the present apparatus, measurements on the H + C{sub 6}H{sub 6} reaction have been made in the 410-530 K range and are compared to results from other studies.

• OSTI ID: 5183847
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 95:18; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NITROMETHANE
HYDROGENATION
PROPELLANTS
COMBUSTION KINETICS
BENZENE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
GROUND STATES
HIGH-FREQUENCY DISCHARGES
HYDROGEN
LOW PRESSURE
MATHEMATICAL MODELS
PRESSURE EFFECTS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
AROMATICS
CHEMICAL EXPLOSIVES
DATA
ELECTRIC DISCHARGES
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXPLOSIVES
HYDROCARBONS
INFORMATION
KINETICS
NITRO COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
REACTION KINETICS
SPECTROSCOPY
TEMPERATURE RANGE
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry