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dc.creatorPetrovic, R
dc.creatorJanaćković, Đorđe T.
dc.creatorBozovic, B
dc.creatorZec, Slavica
dc.creatorKostic-Gvozdenovic, L
dc.date.accessioned2018-03-01T18:58:28Z
dc.date.available2018-03-01T18:58:28Z
dc.date.issued2001
dc.identifier.issn0352-5139
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/2431
dc.description.abstractThree cordierite-type gels were prepared from an aqueous solution of Mg(NO3)(2). a boehmite sol and silica sols of very small particle sizes. The effect of varying the silica particle size on the crystallization and densification behaviour was studied. Phase development was examined by thermal analysis and X-ray diffraction, while the densification behaviour was characterized by measuring the linear shrinkage of pellets. The activation energy of densification by viscous flow was determined using the Franckel model for non-isothermal conditions and a constant heating rate. The results show that spinel crystallizes from the colloidal gels prior to cristobalite, and their reaction gives alpha -cordierite. which is specific for three-phase gels. Decreasing the silica particles size lowers the cristobalite crystallization temperature and the alpha -cordierite formation temperature The activation energy of densification by viscous flow is lower and the densification more efficient. the smaller the silica particles are.en
dc.rightsopenAccessen
dc.sourceJournal of the Serbian Chemical Societyen
dc.subjectcordieriteen
dc.subjectsol-gelen
dc.subjectdensificationen
dc.subjectcrystallizationen
dc.subjectactivation energy of densificationen
dc.titleDensification and crystallization behaviour of colloidal cordierite-type gelsen
dc.typearticleen
dcterms.abstractПетровиц, Р; Јанацковиц, Д; Бозовиц, Б; Костиц-Гвозденовиц, Л; Зец Славица;
dc.citation.volume66
dc.citation.issue5
dc.citation.spage335
dc.citation.epage343
dc.identifier.wos000168756500006
dc.citation.rankM23


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