Structural studies of active carbon used in the growth of silicon carbide catalyst support

The microstructure of active carbon used in the growth of a silicon carbide catalyst support was studied by BET area measurements, electron diffraction and high-resolution electron microscopy. The microstructure of the active carbon is consistent with different distributions of basic structural unit...

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Bibliographic Details
Published in:Journal of materials science 1994-09, Vol.29 (18), p.4700-4707
Main Authors: BENAISSA, M, WERCKMANN, J, EHRET, G, PESCHIERA, E, GUILLE, J, LEDOUX, M. J
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:The microstructure of active carbon used in the growth of a silicon carbide catalyst support was studied by BET area measurements, electron diffraction and high-resolution electron microscopy. The microstructure of the active carbon is consistent with different distributions of basic structural units (BSUs). These BSUs increase in size under heat treatment by forming adjacent distorted columns. Ordering processes are discussed from geometrical considerations based on reciprocal patterns. The reactivity of the interface between the active carbon and SiO vapour is controlled by the proportion of the highly reactive sites in the active carbon surface structure. 23 refs.
ISSN:0022-2461
1573-4803
DOI:10.1007/bf00356512