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Cosolvent-assisted spray pyrolysis for the generation of metal particles

Published online by Cambridge University Press:  29 June 2016

Jung Hyeun Kim ,
Valeri I. Babushok ,
Thomas A. Germer ,
George W. Mulholland  and
Sheryl H. Ehrman
Jung Hyeun Kim
Affiliation:
Department of Chemical Engineering, University of Maryland, College Park, Maryland 20742
Valeri I. Babushok
Affiliation:
Fire Research Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Thomas A. Germer
Affiliation:
Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
George W. Mulholland
Affiliation:
Fire Research Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Sheryl H. Ehrman
Affiliation:
Department ofChemical Engineering, University of Maryland, College Park, Maryland 20742
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Abstract

A cosolvent-assisted spray pyrolysis process was developed for the formation of phase-pure metal particles from metal salt precursors without the direct addition of hydrogen or other reducing gas. Generation of phase-pure copper and nickel particles from aqueous solutions of copper acetate, copper nitrate, and nickel nitrate over the temperature range of 450 to 1000 °C was demonstrated. Addition of ethanol as a cosolvent plays a crucial role in producing phase-pure metal powders. Results of a modeling study of ethanol decomposition kinetics suggest that cosolvent decomposition creates a strong reducing atmosphere during spray pyrolysis via in situ production of hydrogen and carbon monoxide.

Type
Research Article
Information
Journal of Materials Research , Volume 18 , Issue 7 , July 2003 , pp. 1614 - 1622
Copyright
Copyright © Materials Research Society 2003

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