%0 Journal Article
%T High Temperature and High Pressure X-ray Diffraction Study of SAPO-37: Effect of Chemical Composition on the Mechanical Properties of Faujasite-type Materials
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM)
%+ Laboratoire Charles Coulomb (L2C)
%+ Institut Européen des membranes (IEM)
%A Buragadda, Venkata Rajasekha
%A Yu, Lingying
%A Alabarse, Frederico
%A Haidoux, Abel
%A Levelut, Claire
%A van Der Lee, Arie
%A Cambon, Olivier
%A Haines, Julien
%< avec comité de lecture
%Z L2C:13-242
%J RSC Advances
%I Royal Society of Chemistry
%V 3
%P 9911
%8 2013
%D 2013
%R 10.1039/c3ra41119b
%Z Chemical Sciences/Material chemistryJournal articles
%X SAPO-37 with a faujasite-type structure was studied by X-ray diffraction at high temperature and high pressure. A similar degree of negative thermal expansion (NTE) was observed for SAPO-37 with respect to siliceous faujasite with alpha(v(303-773 K)) = -10.7 x 10(-6) K-1. This similarity can be linked to the important role of oxygen displacement in proposed NTE mechanisms. SAPO-37 is more compressible than other faujasites, with a bulk modulus of 18(1) GPa. SAPO-37 also undergoes pressure-induced amorphisation at lower pressures. These results indicate that changes in chemical composition can strongly modify the stability and compressibility of the faujasite network.
%G English
%L hal-00903658
%U https://hal.science/hal-00903658
%~ CNRS
%~ UNIV-MONTP1
%~ UNIV-MONTP2
%~ ENSC-MONTPELLIER
%~ ICG
%~ IEM
%~ L2C
%~ INC-CNRS
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ UM1-UM2
%~ UM-2015-2021
%~ TEST2-HALCNRS