Skip to Main Content
Skip Nav Destination

A comparative study of fibrous zeolites under pressure

Giacomo Diego Gatta
A comparative study of fibrous zeolites under pressure
European Journal of Mineralogy (June 2005) 17 (3): 411-421


A comparative study on lattice compressibility, structural deformation mechanisms and the role played by the framework (Si/Al distribution, cross-linking of the building unit chains) and extra-framework content on the high-pressure behaviour of fibrous zeolites is reported. The structural analogy in the fibrous zeolite group, due to the 4 = 1 secondary building unit (SBU), induces similar elastic behaviour and a 'fibrous zeolite (FZ) average bulk modulus' can be calculated:K (sub T0) (Ba-FZ) >K (sub T0) (Ca-FZ) > K (sub T0) ((Ca +Na)-FZ) > K (sub T0) (Na-FZ). The experiments on natrolite, scolecite, edingtonite and thomsonite show that the elastic anisotropy, represented by the axial bulk moduli, is strongly influenced by the tetragonal topological symmetry. The high-pressure structural refinements performed show one main deformation mechanism for all these zeolites: the cooperative rotation (anti-rotation) of the SBU. This mechanism greatly reduces the free volume of the eight-membered ring channels, parallel to the SBU-chain direction.

ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 17
Serial Issue: 3
Title: A comparative study of fibrous zeolites under pressure
Affiliation: Universita degli Studi di Milano, Dipartimento di Scienze della Terra, Milan, Italy
Pages: 411-421
Published: 200506
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 57
Accession Number: 2005-044756
Categories: General geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 200526
Close Modal

or Create an Account

Close Modal
Close Modal