Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-04T21:44:32.415Z Has data issue: false hasContentIssue false
  • English
  • Français

Simulation and experimental study of spray pyrolysis of polydispersed droplets

Published online by Cambridge University Press:  31 January 2011

W. Widiyastuti ,
Wei-Ning Wang ,
I. Wuled Lenggoro ,
Ferry Iskandar  and
Kikuo Okuyama
W. Widiyastuti
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
Wei-Ning Wang
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
I. Wuled Lenggoro
Affiliation:
Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
Ferry Iskandar
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
Kikuo Okuyama*
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

The size distribution and morphology of particles (dense or hollow) produced from polydispersed droplets in spray pyrolysis were studied both experimentally and theoretically. Zirconia, generated from a zirconyl hydroxychloride precursor, was selected as a model material. The simulation method that was previously developed by our group [J. Mater. Res., 15, 733 (2000)], in which droplets were assumed to be uniform, was improved to evaluate the effect of polydispersity in droplets on the size and morphology of the resulting particles. Simultaneous equations for heat and mass transfer of solvent evaporation and solute mass transfer inside droplets were solved numerically for a number of discrete classes of droplet size distribution. The role of the decomposition reaction was also included after the evaporation stage of polydispersed droplets in an attempt to explain the densification of particles. In hollow particle generation, this simulation was used to evaluate the thickness of a particle shell. The experimental results were in good agreement with the simulation data, suggesting that the model provides a more realistic prediction.

Keywords

Chemical reactionDensificationSpray pyrolysis
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 7 , July 2007 , pp. 1888 - 1898
Copyright
Copyright © Materials Research Society 2007

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

REFERENCES

1Xiong, Y. Kodas, T.T.: Droplet evaporation and solute precipitation during spray pyrolysis. J. Aerosol Sci. 24, 893 1993CrossRefGoogle Scholar
2Zhang, S.C., Messing, G.L. Borden, M.: Synthesis of solid, spherical zirconia particles by spray pyrolysis. J. Am. Ceram. Soc. 73, 61 1990CrossRefGoogle Scholar
3Lenggoro, I.W., Hata, T., Iskandar, F., Lunden, M.M. Okuyama, K.: An experimental and modeling investigation of particle production by spray pyrolysis using a laminar flow aerosol reactor. J. Mater. Res. 15, 733 2000CrossRefGoogle Scholar
4Okuyama, K. Lenggoro, I.W.: Preparation of nanoparticles via spray route. Chem. Eng. Sci. 58, 537 2003CrossRefGoogle Scholar
5Jokanovic, V., Jokanovic, B., Nedeljkovic, J. Milosevic, O.: Modeling of nanostructured TiO2 spheres obtained by ultrasonic spray pyrolysis. Colloid Surf. A 249, 111 2004CrossRefGoogle Scholar
6Jayanthi, G.V., Zhang, S.C. Messing, G.L.: Modeling of solid particle formation during solution aerosol thermolysis: The evaporation stage. Aerosol Sci. Technol. 19, 478 1993CrossRefGoogle Scholar
7Nesic, S. Vodnik, J.: Kinetics of droplet evaporation. Chem. Eng. Sci. 46, 527 1991CrossRefGoogle Scholar
8Elperin, T. Krasovitos, B.: Evaporation of liquid droplets containing small solid particles. Int. J. Heat Mass Tran. 38, 2259 1995CrossRefGoogle Scholar
9Messing, G.L., Zhang, S.C. Jayanthi, G.V.: Ceramic powder synthesis by spray pyrolysis. J. Am. Ceram. Soc. 76, 2707 1993CrossRefGoogle Scholar
10Che, S., Sakurai, O., Shinozaki, K. Mizutani, N.: Particle structure control through intraparticle reactions by spray pyrolysis. J. Aerosol Sci. 29, 271 1998CrossRefGoogle Scholar
11Ferron, G.A., Roth, C., Busch, B. Karg, E.: Estimation of the size distribution of aerosols produced by jet nebulizers as a function of time. J. Aerosol Sci. 28, 805 1997CrossRefGoogle Scholar
12Hinds, W.C.: Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles, 2nd ed. John Wiley & Sons, New York 1999), pp. 288, 286Google Scholar
13Luijten, C.C.M., Bosschaart, K.J. van Dongen, M.E.H.: A new method for determining binary diffusion coefficients in dilute condensable vapors. Int. J. Heat Mass Tran. 40, 3497 1997CrossRefGoogle Scholar
14Poling, B.E., Prausnitz, J.M. O’Connell, J.P.: The Properties of Gases and Liquids, 5th ed. Mc. Graw-Hill Inc., New York 2001), pp. A.45, 9.75Google Scholar
15Sloth, J., Kiil, S., Jensen, A.D., Andersen, S.K., Jorgensen, K., Schiffter, H. Lee, G.: Model based analysis of the drying of a single solution droplet in an ultrasonic levitator. Chem. Eng. Sci. 61, 2701 2006CrossRefGoogle Scholar
16Deguchi, S., Matsuda, H., Hasatani, M. Kobayashi, N.: Formation mechanism of TiO2 fine particles prepared by the spray pyrolysis method. Dry. Technol. 12, 577 1994CrossRefGoogle Scholar
17Yu, H-F.: Simulation of spray pyrolysis for ceramic powder preparation. Particul. Sci. Technol. 13, 149 1995CrossRefGoogle Scholar
18Williams, D.B. Carter, C.B.: Transmission Electron Microscopy: A Textbook for Materials Science Springer Science Business Media, New York 1996 30CrossRefGoogle Scholar
19Kodas, T.T. Hampden-Smith, M.J.: Aerosol Processing of Materials Wiley-VCH., Canada 1999 387Google Scholar
20Yuan, Z.Z., Chen, X.D., Wang, B.X. Wang, Y.J.: Kinetics study on non-isothermal crystallization of the metallic Co43Fe20Ta5.5B31.5 glass. J. Alloy Compd. 407, 163 2006CrossRefGoogle Scholar
21Rahaman, M.N.: Ceramic Processing and Sintering, 2nd ed. Marcel Dekker, New York 2003), p. 68Google Scholar
22Kissinger, H.E.: Reaction kinetics in differential thermal analysis. Anal. Chem. 29, 1702 1957CrossRefGoogle Scholar