In situ study of single aqueous droplet solidification of ceramic precursors used for spray pyrolysis

Chak K. Chan; Richard C. Flagan; John H. Seinfeld

doi:10.1111/j.1151-2916.1998.tb02384.x

In situ study of single aqueous droplet solidification of ceramic precursors used for spray pyrolysis

Chak K. Chan, Richard C. Flagan, John H. Seinfeld

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The electrodynamic balance (EDB) is demonstrated to be useful for the in situ study of aqueous droplet solidification. We have used an EDB to study the solidification of solution droplets used for ceramic powder synthesis by spray pyrolysis. The mass change and the elastic light scattering of the drying 20 μm solution droplets were monitored. We found that aqueous MgCl2 droplets crystallize but Mg-(COOCH3)2, MgSO4, ZrO(OH)Cl, and Zr(COOCH3)4 droplets appear to form gels at high concentrations. As a result of the gel formation, the rate of loss of water from the droplets can be reduced by approximately 150 times and drying is limited by solute diffusion in the gel.

Original language	English (US)
Pages (from-to)	646-648
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	81
Issue number	3
DOIs	https://doi.org/10.1111/j.1151-2916.1998.tb02384.x
State	Published - Jan 1 1998
Externally published	Yes

ASJC Scopus subject areas

Materials Chemistry
Ceramics and Composites

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10.1111/j.1151-2916.1998.tb02384.x

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title = "In situ study of single aqueous droplet solidification of ceramic precursors used for spray pyrolysis",

abstract = "The electrodynamic balance (EDB) is demonstrated to be useful for the in situ study of aqueous droplet solidification. We have used an EDB to study the solidification of solution droplets used for ceramic powder synthesis by spray pyrolysis. The mass change and the elastic light scattering of the drying 20 μm solution droplets were monitored. We found that aqueous MgCl2 droplets crystallize but Mg-(COOCH3)2, MgSO4, ZrO(OH)Cl, and Zr(COOCH3)4 droplets appear to form gels at high concentrations. As a result of the gel formation, the rate of loss of water from the droplets can be reduced by approximately 150 times and drying is limited by solute diffusion in the gel.",

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T1 - In situ study of single aqueous droplet solidification of ceramic precursors used for spray pyrolysis

AU - Chan, Chak K.

AU - Flagan, Richard C.

AU - Seinfeld, John H.

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PY - 1998/1/1

Y1 - 1998/1/1

N2 - The electrodynamic balance (EDB) is demonstrated to be useful for the in situ study of aqueous droplet solidification. We have used an EDB to study the solidification of solution droplets used for ceramic powder synthesis by spray pyrolysis. The mass change and the elastic light scattering of the drying 20 μm solution droplets were monitored. We found that aqueous MgCl2 droplets crystallize but Mg-(COOCH3)2, MgSO4, ZrO(OH)Cl, and Zr(COOCH3)4 droplets appear to form gels at high concentrations. As a result of the gel formation, the rate of loss of water from the droplets can be reduced by approximately 150 times and drying is limited by solute diffusion in the gel.

AB - The electrodynamic balance (EDB) is demonstrated to be useful for the in situ study of aqueous droplet solidification. We have used an EDB to study the solidification of solution droplets used for ceramic powder synthesis by spray pyrolysis. The mass change and the elastic light scattering of the drying 20 μm solution droplets were monitored. We found that aqueous MgCl2 droplets crystallize but Mg-(COOCH3)2, MgSO4, ZrO(OH)Cl, and Zr(COOCH3)4 droplets appear to form gels at high concentrations. As a result of the gel formation, the rate of loss of water from the droplets can be reduced by approximately 150 times and drying is limited by solute diffusion in the gel.

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DO - 10.1111/j.1151-2916.1998.tb02384.x

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EP - 648

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

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In situ study of single aqueous droplet solidification of ceramic precursors used for spray pyrolysis

Abstract

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