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Title: Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} from 300 to 1440 K

Abstract

Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} have been measured between 300 and 1440 K in a high temperature flowing afterglow apparatus. The CO{sub 3}{sup -} rate constants near to the collision rate at low temperatures and fall by about a factor of 50 with temperature until a broad minimum is reached at 900-1300 K. The highest temperature point shows the increasing rate constant. Comparison to drift tube data taken in a helium buffer shows that total energy controls the reactivity, presumably because the reaction goes through a long lived complex even at 1440 K. The reaction of O{sub 3}{sup -} with SO{sub 2} was studied up to 1400 K. The rate constant is collisional until 700 K and then decreases with increasing temperature. Rate constants measured at 1300 and 1400 K appear to show an increase, but that observation is questionable since O{sub 3}{sup -} could not be made cleanly. The O{sub 3}{sup -} data at 1200 K and below show that total energy controls reactivity in that range.

Authors:
; ; ;  [1]
  1. Air Force Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010 (United States)
Publication Date:
OSTI Identifier:
20783258
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 124; Journal Issue: 14; Other Information: DOI: 10.1063/1.2181572; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANIONS; CARBON COMPOUNDS; CHEMICAL ANALYSIS; COMPARATIVE EVALUATIONS; HELIUM; MASS SPECTROSCOPY; REACTION KINETICS; REACTIVITY; SULFUR DIOXIDE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K

Citation Formats

Miller, Thomas M., Friedman, Jeffrey F., Williamson, John S., and Viggiano, A.A.. Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} from 300 to 1440 K. United States: N. p., 2006. Web. doi:10.1063/1.2181572.
Miller, Thomas M., Friedman, Jeffrey F., Williamson, John S., & Viggiano, A.A.. Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} from 300 to 1440 K. United States. doi:10.1063/1.2181572.
Miller, Thomas M., Friedman, Jeffrey F., Williamson, John S., and Viggiano, A.A.. Fri . "Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} from 300 to 1440 K". United States. doi:10.1063/1.2181572.
@article{osti_20783258,
title = {Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} from 300 to 1440 K},
author = {Miller, Thomas M. and Friedman, Jeffrey F. and Williamson, John S. and Viggiano, A.A.},
abstractNote = {Rate constants for the reactions of CO{sub 3}{sup -} and O{sub 3}{sup -} with SO{sub 2} have been measured between 300 and 1440 K in a high temperature flowing afterglow apparatus. The CO{sub 3}{sup -} rate constants near to the collision rate at low temperatures and fall by about a factor of 50 with temperature until a broad minimum is reached at 900-1300 K. The highest temperature point shows the increasing rate constant. Comparison to drift tube data taken in a helium buffer shows that total energy controls the reactivity, presumably because the reaction goes through a long lived complex even at 1440 K. The reaction of O{sub 3}{sup -} with SO{sub 2} was studied up to 1400 K. The rate constant is collisional until 700 K and then decreases with increasing temperature. Rate constants measured at 1300 and 1400 K appear to show an increase, but that observation is questionable since O{sub 3}{sup -} could not be made cleanly. The O{sub 3}{sup -} data at 1200 K and below show that total energy controls reactivity in that range.},
doi = {10.1063/1.2181572},
journal = {Journal of Chemical Physics},
number = 14,
volume = 124,
place = {United States},
year = {Fri Apr 14 00:00:00 EDT 2006},
month = {Fri Apr 14 00:00:00 EDT 2006}
}