STRUCTURAL STUDIES OF ACTIVE-CARBON USED IN THE GROWTH OF SILICON-CARBIDE CATALYST SUPPORT

Citation
M. Benaissa et al., STRUCTURAL STUDIES OF ACTIVE-CARBON USED IN THE GROWTH OF SILICON-CARBIDE CATALYST SUPPORT, Journal of Materials Science, 29(18), 1994, pp. 4700-4707
Citations number
23
Categorie Soggetti
Material Science
ISSN journal
00222461
Volume
29
Issue
18
Year of publication
1994
Pages
4700 - 4707
Database
ISI
SICI code
0022-2461(1994)29:18<4700:SSOAUI>2.0.ZU;2-1
Abstract
The microstructure of active carbon used in the growth of a silicon ca rbide catalyst support has been studied by BET area measurements, elec tron diffraction and high-resolution electron microscopy. The microstr ucture of the active carbon is consistent with different distributions of basic structural units (BSUs). These BSUs increase in size under h eat treatment by forming adjacent distorted columns. Ordering processe s are discussed from geometrical considerations based on reciprocal pa tterns. The reactivity of the interface between the active carbon and SiO vapour is controlled by the proportion of the highly reactive site s in the active carbon surface structure.