Dehydratation-rehydratation behaviour of layered double hydroxyde: a study by X-Ray diffractometry and MAS NMR spectroscopy

A. Béres, I. Palinko, J.-C. Bertrand, Janos B.Nagy, Imre Kiricsi

    Résultats de recherche: Contribution à un journal/une revueArticle

    Résumé

    MgAl and ZnAl double hydroxides were synthesized and their dehydration-rehydration behaviour was studied by X-ray diffractometry and 27Al magic-angle spinning (MAS) NMR spectroscopy. On dehydration the layered structure collapsed, but treatment in water resulted in partial reconstitution of the original structure. On heat treatment part of the octahedrally coordinated aluminium, typical of layered double hydroxides, became tetrahedrally coordinated. On rehydration some of the tetrahedral aluminium became octahedrally coordinated again.
    langue originaleAnglais
    Pages (de - à)13-16
    Nombre de pages4
    journalJournal of molecular structure
    Volume410-411
    Les DOIs
    Etat de la publicationPublié - 1998

    Contient cette citation