DOI: 10.1063/1.1670232. Ion–Molecule Reaction Studies from 300° to 600°K in a Temperature-Controlled Flowing Afterglow System

Ion–Molecule Reaction Studies from 300° to 600°K in a Temperature-Controlled Flowing Afterglow System

10.1063/1.1670232

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The flowing afterglow technique for ion-neutral reaction rate constant studies has been modified to cover a range of gas temperature from 82° to 600°K. The experimental apparatus is described and rate constants for six reactions between 300° and 600°K are reported. The reaction of He+ with N2 is found to have a rate constant 1.2 × 10−9 cm/3sec, independent of temperature in this range. The reaction of O+ with CO2 has a rate constant 1.1 × 10−9 cm3/sec at 300°K, decreasing slightly to 8 × 10−10 cm3/sec at 600°K. The reaction of N+ with O2 appears to have a rate constant 6 × 10−10 cm3/sec throughout this temperature range. The rate constant for charge transfer of N2+ with O2 is measured to be 4.7 × 10−11 cm3/sec at 300°K, decreasing to about 2 × 10−11 cm3/sec at 500°K. The rate constant for the reaction of O+ with O2 decreases from 2 to 1.3 × 10−11 cm3/sec, and the rate constant for O+ + N2 decreases from 1.2 × 10−12 cm3/sec to about 6 × 10−13 cm3/sec between 300° and 600°K.

Bibliography

Dunkin, D. B., Fehsenfeld, F. C., Schmeltekopf, A. L., & Ferguson, E. E. (1968). IonâMolecule Reaction Studies from 300Â° to 600Â°K in a Temperature-Controlled Flowing Afterglow System. The Journal of Chemical Physics, 49(3), 1365â1371.

Authors 4

D. B. Dunkin (first)
F. C. Fehsenfeld (additional)
A. L. Schmeltekopf (additional)
E. E. Ferguson (additional)

References 33 Referenced 206

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Dates

Type	When
Created	21 years, 6 months ago (Feb. 6, 2004, 2:22 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 11:05 p.m.)
Indexed	1 month ago (Aug. 2, 2025, 12:57 a.m.)
Issued	57 years, 1 month ago (Aug. 1, 1968)
Published	57 years, 1 month ago (Aug. 1, 1968)
Published Print	57 years, 1 month ago (Aug. 1, 1968)

Funders 0

None

BibTeX

@article{Dunkin_1968, title={Ion–Molecule Reaction Studies from 300° to 600°K in a Temperature-Controlled Flowing Afterglow System}, volume={49}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1670232}, DOI={10.1063/1.1670232}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Dunkin, D. B. and Fehsenfeld, F. C. and Schmeltekopf, A. L. and Ferguson, E. E.}, year={1968}, month=aug, pages={1365–1371} }

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