Hostname: page-component-7bb8b95d7b-wpx69 Total loading time: 0 Render date: 2024-10-01T16:20:47.189Z Has data issue: false hasContentIssue false
  • English
  • Français

Characterization of iron oxide-silica nanocomposites in flames: Part II. Comparison of discrete-sectional model predictions to experimental data

Published online by Cambridge University Press:  31 January 2011

Pratim Biswas ,
Chang Yu Wu ,
Michael R. Zachariah  and
Brian McMillin
Pratim Biswas*
Affiliation:
Aerosol and Air Quality Research Laboratory, Environmental Engineering and Science Division, University of Cincinnati, Cincinnati, Ohio 45221–0071
Chang Yu Wu
Affiliation:
Aerosol and Air Quality Research Laboratory, Environmental Engineering and Science Division, University of Cincinnati, Cincinnati, Ohio 45221–0071
Michael R. Zachariah
Affiliation:
Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Brian McMillin
Affiliation:
Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
*
a)Author to whom correspondence should be addressed.
Get access

Abstract

A discrete-sectional model accounting for particle formation by chemical reaction and growth by coagulation and condensation is developed to predict the evolution of the nanocomposite aerosol size distribution in a multicomponent iron-silicon system in a flame. Particle formation by nucleation of the vapor is represented by an Arrhenius-type rate expression, with the rate constant being obtained from experiments and simulation results reported in the literature. Precursor vapor concentrations and the second aerosol volume moment predictions are compared to laser-induced fluorescence (LIF) and light scattering intensity measurements from experiments described in Part I20 of the paper. The results elucidate the important formation and growth mechanisms of nanocomposite ferric oxide-silica particles in flame reactors. The role of operating parameters such as precursor characteristics and temperature profiles on the final product characteristics is established.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 3 , March 1997 , pp. 714 - 723
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Friedlander, S. K., Smoke, Dust and Haze (John Wiley and Sons, New York, 1977).Google Scholar
2.Seinfeld, J. H., Atmospheric Chemistry and Physics of Air Pollution (Wiley Interscience, New York, 1986).Google Scholar
3.Gelbard, F. and Seinfeld, J. H., J. Comp. Phys. 28, 357 (1978).CrossRefGoogle Scholar
4.Frenklach, M. and Harris, S. J., J. Colloid Int. Sci. 118, 252 (1987).CrossRefGoogle Scholar
5.Wu, J. J. and Flagan, R. C., J. Appl. Phys. 61, 1365 (1988).CrossRefGoogle Scholar
6.Landgrebe, J. D. and Pratsinis, S. E., J. Colloid Int. Sci. 139, 63 (1990).CrossRefGoogle Scholar
7.Gelbard, F., Tambour, Y., and Seinfeld, J. H., J. Colloid Int. Sci. 76, 541 (1980).CrossRefGoogle Scholar
8.von Rosenberg, C. W. and Wray, K. L., J. Quant. Spectrosc. Radiat. Transfer 12, 531 (1972).CrossRefGoogle Scholar
9.Powers, D. R., J. Am. Ceram. Soc. 61, 295 (1978).CrossRefGoogle Scholar
10.Zachariah, M. R. and Tsang, W., Aerosol Sci. Technol. 19, 499 (1993).CrossRefGoogle Scholar
11.Zachariah, M. R. and Tsang, W., J. Phys. Chem. 99, 5308 (1995).CrossRefGoogle Scholar
12.Gelbard, F. and Seinfeld, J. H., J. Colloid Int. Sci. 78, 485 (1980).CrossRefGoogle Scholar
13.Wu, C. Y. and Biswas, P., Comb. Flame 93, 31 (1993).CrossRefGoogle Scholar
14.Ulrich, G. D. and Riehl, J. W., J. Colloid Int. Sci. 87 (1), 257 (1982).CrossRefGoogle Scholar
15.Zachariah, M. R., Chin, D., Semerjian, H. G., and Katz, J. L., Comb. Flame 78, 287 (1989).CrossRefGoogle Scholar
16.Hung, C. H. and Katz, J. L., J. Mater. Res. 7, 1861 (1992).CrossRefGoogle Scholar
17.Chang, H., Lin, W. Y., and Biswas, P., Aerosol Sci. Technol. 22, 24 (1995).CrossRefGoogle Scholar
18.Biswas, P., Li, X., and Pratsinis, S. E., J. Appl. Phys. 65, 2445 (1989).CrossRefGoogle Scholar
19.CRC Handbook of Chemistry and Physics, 75th ed. (CRC Press, Boca Raton, FL, 1994).Google Scholar
20.McMillin, B. K., Biswas, P., and Zachariah, M. R., J. Mater. Res. 11, 1552 (1996).CrossRefGoogle Scholar