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Formation of Solid and Hollow Spherical Particles by Spray Pyrolysis

Published online by Cambridge University Press:  15 February 2011

Shi C. Zhang ,
Gary L. Messing ,
Seong Young Lee  and
Robert J. Santoro
Shi C. Zhang
Affiliation:
Particulate Materials Center and Pennsylvania State University, University Park, PA
Gary L. Messing
Affiliation:
Particulate Materials Center and Pennsylvania State University, University Park, PA
Seong Young Lee
Affiliation:
Department of Mechanical Engineering Pennsylvania State University, University Park, PA
Robert J. Santoro
Affiliation:
Department of Mechanical Engineering Pennsylvania State University, University Park, PA
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Abstract

Spray pyrolysis offers a number of opportunities for the synthesis of either solid or hollow spherical particles. As predicted by the evaporation model, particles with different shell thicknesses can be obtained depending on the concentration gradient at the onset of precipitation. If the precipitate shell has a sufficiently high permeability for removal of the remaining solvent, then the shell can be preserved and a hollow particle obtained. By drying at a lower temperature solid particles are readily formed from precursor salts but hollow particle formation by SP at these low temperatures imposes demanding heating rate requirements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 372: Symposium W1 – Hollow and Solid Spheres and Microspheres--Science and Technology , 1994 , 49
Copyright
Copyright © Materials Research Society 1995

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