OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy


  • Vol. 42, Iss. 8 — Nov. 1, 1988
  • pp: 1473–1482

Soot-Ozone Reaction Kinetics: Spectroscopic and Gravimetric Studies

D. M. Smith, W. F. Welch, J. A. Jassim, A. R. Chughtai, and D. H. Stedman

Applied Spectroscopy, Vol. 42, Issue 8, pp. 1473-1482 (1988)

View Full Text Article

Acrobat PDF (831 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


Studies on the kinetics of soot-O3 reactions, at various soot and ozone concentrations, have been conducted under flow conditions with ozone ranging from 50 to 15,000 ppm and soot from 2 to 350 mg. At lower concentrations, the initial rates of CO2 and CO formation are found to be half order with respect to soot and first order with respect to ozone. At higher concentrations, CO2 formation exhibits a more complex pattern. The initial rate for the formation of CO2 for a first stage is half order with respect to soot and 1.5 order with respect to O3, while the second stage is zero order in both species. Differences between data at higher and lower concentrations are discussed, and mechanisms for the formation of CO2, CO, and carboxylics during ozonation are suggested. Mass balance calculations on low concentration data reveal that only a small portion of the ozone is used to produce CO2, CO, H2O, and carboxylic species, most of it being decomposed catalytically over soot. At higher concentrations of O3, the rate of formation of carboxylic functionalities during the hexane soot-ozone reaction under static conditions has been examined. The initial rate, as determined by the Elovich equation, suggests that the soot-ozone reaction is nearly 6 times faster under equivalent conditions than the soot-NO2/N2O4 reaction reported earlier from this laboratory.

D. M. Smith, W. F. Welch, J. A. Jassim, A. R. Chughtai, and D. H. Stedman, "Soot-Ozone Reaction Kinetics: Spectroscopic and Gravimetric Studies," Appl. Spectrosc. 42, 1473-1482 (1988)

Sort:  Journal  |  Reset


References are not available for this paper.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited