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Intercalation of cyclic amines in α–hafnium bis(hydrogen phosphate) monohydrate
Published online by Cambridge University Press: 31 January 2011
Abstract
The intercalation in vapor phase of cyclic amines (aniline, benzylamine, cyclohexylamine, piperidine, and pyridine) in α–hafnium bis(hydrogen phosphate) monohydrate (α–HfP) has been investigated. Elemental and thermal analysis lead to the establishment of the intercalate composition. The general formula is x[Hf(HPO4)2 · y amine H2O] (1 - x) α–HfP where y = 2, 1 and x ≤ 1. When y = 1 (piperidine and pyridine) the amines form a monomolecular layer. When y = 2 (aniline, benzylamine, and cyclohexylamine) the arrangement is bimolecular. The results are compared to those described for α–ZrP.
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