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Isotopic exchange reactions between nitrogen oxides and oxyhalides

Journal Article · · J. Phys. Chem., v. 78, no. 4, pp. 402-405
DOI:https://doi.org/10.1021/j100597a016· OSTI ID:4349807
;
The kinetics of atom exchange reactions among CINO, NO, and NO/sub 2/ were studied using a time-of-flight mass spectrometer in two reactors of different sunface-to-volume ratio, over a temperature range of 0 to 23 deg . The reactions proceed according to the equations Cl/sup 14/NO + /sup 15/NO/sub 2/ yields Cl/sup 15/NO/sub 2/ + /sup 14 /NO, Cl/sup 14/NO + /sup 15/NO/sub 2/ yields Cl/sup 15/NO + /sup 14/NO/sub 2/, Cl/sup 14/NO + /sup 15/NO yields Cl/ sup 15/NO + / sup 14/NO, with the secondorder rate constant, k = (1.78 plus or minus 0.04) x 10/sup 5/ expSTA-(3350 plus or minus 150)/T! M/sup -1/ sec/sup - 1/ for the first two reactions and k = (1.64 plus or minus 0.10) x 10/s up 6/ expSTA--(3145 plus or minus 150)/T! M/sip -1/ sec/sup -1/ for the last reaction. Bimolecular mechanisms for the reactions are proposed similar to those for the corresponding reactions in NO--NO/sub 2/ and NO/sub 2/-NO/sub 2/ systems. However, the rates of reactions in the present systems are slower by a factor of ~10/sup 6/ at 23 deg . (auth)
Research Organization:
Univ. of Waterloo, Ont.
Sponsoring Organization:
USDOE
NSA Number:
NSA-29-018127
OSTI ID:
4349807
Journal Information:
J. Phys. Chem., v. 78, no. 4, pp. 402-405, Journal Name: J. Phys. Chem., v. 78, no. 4, pp. 402-405; ISSN JPCHA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

*NITROGEN 14-- ISOTOPIC EXCHANGE
*NITROGEN 15-- ISOTOPIC EXCHANGE
CHEMICAL REACTION KINETICS
CHLORINE COMPOUNDS
N44230* --Environmental & Earth Sciences--Radioactive Effluents--Water
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXYGEN COMPOUNDS