Extra-framework aluminium in thermally treated zeolite CaA
1985; Elsevier BV; Volume: 114; Issue: 2 Linguagem: Inglês
10.1016/0009-2614(85)85074-0
ISSN1873-4448
AutoresD. Freude, Jürgen Haase, Harry Pfeifer, D. Prager, G. Scheler,
Tópico(s)Advanced NMR Techniques and Applications
ResumoNuclear magnetic resonance spectra of aluminium including magic-angle spinning (27Al MAS NMR) have been measured in order to study the dealumination which is caused by a heat treatment of zeolite CaA. The extra-lattice aluminium exists partly in the form of Al(OH)4− anions, corresponding to at most about 17% of lattice dealumination.
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