Kinetic study of the reactions Na + O sub 2 + N sub 2 and Na + N sub 2 O over an extended temperature range

Journal Article · Thu Apr 20 04:00:00 EDT 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100345a051· OSTI ID:5144102

Plane, J M.C.; Rajasekhar, B ^[1]

---

1. Univ. of Miami, FL (USA)

An investigation is presented of the recombination reaction Na + O{sub 2} + N{sub 2} by the technique of pulsed photolysis of a Na atom precursor followed by time-resolved laser induced fluorescence spectroscopy of Na atoms at {lambda} = 589 nm. Termolecular behavior was demonstrated, and absolute third-order rate constants were obtained over the temperature range 233-1118 K. A fit of this data to the form AT{sup {minus}n} yields k(T) = ((2.9 {plus minus} 0.7) {times} 10{sup {minus}30})(T/300){sup {minus}(1.30{plus minus}0.04)} cm{sup 6} molecule{sup {minus}2} s{sup {minus}1}. This result is compared to two previous studies of this reaction by different experimental methods, which were in marked disagreement below 600 K. The rate coefficients are then extrapolated from the experimental temperature range to ambient mesospheric temperatures (140 K < T < 240 K) and to flame temperatures (1500 K < T < 2200 K) by means of a highly satisfactory fit to the Troe formalism. We also describe a study of the reaction Na + N{sub 2}O over the temperature range 280-850 K. A fit of the results to the Arrhenius form yields k(T) = (2.8 {plus minus} 0.3) {times} 10{sup {minus}10} exp(-(1590 {plus minus} 50)/T) cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}.

• OSTI ID: 5144102
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:8; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical &amp; Physicochemical Properties
400800 -- Combustion
Pyrolysis
&amp; High-Temperature Chemistry
54 ENVIRONMENTAL SCIENCES
540110
ALKALI METALS
ARRHENIUS EQUATION
ATMOSPHERIC CHEMISTRY
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
ELEMENTS
EQUATIONS
EXPERIMENTAL DATA
HIGH TEMPERATURE
INFORMATION
KINETICS
MEDIUM TEMPERATURE
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SODIUM
THERMODYNAMICS
VERY HIGH TEMPERATURE