A number of solid-gas reactions were carried out on cobalt compounds. Shape, porosity, crystallite size and crystallite misorientation of particles of the reacting solids as well as their changes during the reaction were studied. The results show that topotactic relationships are always present at the beginning of the reaction. As the reaction proceeds either they are maintained to a greater or lesser extent or the particles break up. Influence of the starting solid on growth of the product and occurence of resulting strains followed by their ease of relief seem to be the causes of the observed phenomena.
KeywordsPorosity Cobalt Zeolite Hexagonal Dehydration
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- (2).J. D. Bernal, Schweiz. Archiv. Angew. Wiss. Techn. 26 (1960) 69.Google Scholar
- (3).M. Figlarz and F. Vincent. Amiel in “6th Int. Symp. Reactiv. Solids, Schenectady 1968” (edited by J. W. Mitchell, R. C. Devries, R. W. Roberts and P. Cannon) (Wiley - Interscience, New York 1969 ) p. 181.Google Scholar
- (4).F. Vincent, F. Lecuir and M. Figlarz, Compt. Rend. Acad. Sci. (Paris) 268C (1969) 379.Google Scholar
- (5).D. Colaitis, F. Fievet-Vincent, J. Guenot and M. Figlarz Mat. Res. Bull. 6 (1971) 1211.Google Scholar
- (7).M. Figlarz, Ann. Chini. 9 (1974) 367.Google Scholar
- (8).M. Figlarz, J. Guenot and F. Fievet-Vincent, to be published.Google Scholar