Zeolitic behaviour of water in a new WO<sub>3</sub> polymorph with a pyrochlore-type structure and vacant 3D tunnels

Michele Pijolat; Michel Soustelle; Ali Coucou; François Portemer; Michel Figlarz

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Zeolitic behaviour of water in a new WO<sub>3</sub> polymorph with a pyrochlore-type structure and vacant 3D tunnels

Journal article

Zeolitic behaviour of water in a new WO₃ polymorph with a pyrochlore-type structure and vacant 3D tunnels

Michele Pijolat, Michel Soustelle, Ali Coucou, François Portemer and Michel Figlarz

Journal de Chimie Physique, Vol.87, pp.1223-1232

1990

Abstract

pyrochlore-WO<sub>3</sub>-water system

water vapor pression

thermodynamics

zeolitic-type behaviour

In pyrochlore WO₃ water has a zeolitic behaviour which has been studied by TGA and DSC. The evaluated enthalpy change for dehydration is in the range 4-5 kcal.mole^-1. This value is discussed in relation with the pyrochlore WO₃ structure and related to the 3D system of intersecting empty tunnels.

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Title: Zeolitic behaviour of water in a new WO₃ polymorph with a pyrochlore-type structure and vacant 3D tunnels
Creators - without role: Michele Pijolat - Laboratoire Georges Friedel
Michel Soustelle - Laboratoire Georges Friedel
Ali Coucou - Université de Picardie Jules Verne
François Portemer - Université de Picardie Jules Verne
Michel Figlarz - Université de Picardie Jules Verne
Publication Details: Journal de Chimie Physique, Vol.87, pp.1223-1232
Identifiers: 9936400409311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: hal-01243567

Zeolitic behaviour of water in a new WO3 polymorph with a pyrochlore-type structure and vacant 3D tunnels

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Zeolitic behaviour of water in a new WO₃ polymorph with a pyrochlore-type structure and vacant 3D tunnels