Acidic properties of Ge, Ti, Zr and Sn phosphates and arsenates

A comparison of the acidic properties of isostructural phases of Ge, Ti, Zr and Sn bis-(monohydrogenphosphates) or arsenates and the derived layered- or cubic-pyrophosphates is reported. This study has been performed by investigating their thermal behaviour, structural changes, FT-TR spectra of the...

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Bibliographic Details
Published inMaterials chemistry and physics Vol. 17; no. 1; pp. 161 - 179
Main Authors La Ginestra, A., Patrono, P.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.04.1987
Elsevier
Subjects
Chemistry
Exact sciences and technology
General and physical chemistry
Liquid-liquid equilibria
Liquid-solid equilibria
Liquid-vapor equilibria
Others (including liquid-liquid-vapor equilibria)
Phase equilibria
Arsenates
Thermal behavior
Thermodesorption
Acidity
Differential thermal analysis
Tin Hydrogenphosphates
Zirconia Hydrogenphosphates
Dehydration
Infrared spectrometry
Ammonia
Adsorption
Germanium Hydrogenphosphates
Catalyst activity
Titanium Hydrogenphosphates
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Summary:A comparison of the acidic properties of isostructural phases of Ge, Ti, Zr and Sn bis-(monohydrogenphosphates) or arsenates and the derived layered- or cubic-pyrophosphates is reported. This study has been performed by investigating their thermal behaviour, structural changes, FT-TR spectra of the compounds before and after adsorption of probe molecules, NH 3 TPD and by means of acid-catalysed reactions, such as isopropanol dehydration and 1-butene isomerisation.
ISSN:0254-0584
1879-3312
DOI:10.1016/0254-0584(87)90054-X