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Catalytic graphitization of three-dimensional wood-derived porous scaffolds

Published online by Cambridge University Press:  14 January 2011

M.T. Johnson  and
K.T. Faber
M.T. Johnson
Affiliation:
Department of Materials Science and Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, Illinois 60208-3108
K.T. Faber*
Affiliation:
Department of Materials Science and Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, Illinois 60208-3108
*
a)Address all correspondence to this author. e-mail: k-faber@northwestern.edu
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Abstract

A catalytic technique to enhance graphite formation in nongraphitizing carbons was adapted to work with three-dimensional wood-derived scaffolds. Unlike many synthetic graphite precursors, wood and other cellulosic carbons remain largely disordered after high temperature pyrolysis. Using a nickel nitrate liquid catalyst and controlled pyrolysis conditions, wood-derived scaffolds were produced showing similar graphitic content to traditional pitch-based graphite while retaining the high-aspect ratio pores of the precursor wood microstructure. Graphite formation was studied as a function of processing time and pyrolysis temperature, and the resulting carbons were analyzed using x-ray diffraction, Raman spectroscopy, x-ray photoelectron spectroscopy, and electron microscopy techniques.

Keywords

CCatalyticPyrolysis

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Articles
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Journal of Materials Research , Volume 26 , Issue 1 , 14 January 2011 , pp. 18 - 25
Copyright
Copyright © Materials Research Society 2011

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