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Non-Hydrostatic Compression of Zeolite NaA in Water Medium: Connection to Anomalous Conductivity Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Zeitschrift für Kristallographie
ISSN: 0044-2968
Output data Year: 2009, Volume: 224, Number: 3, Pages: 137-143 Pages count : 7 DOI: 10.1524/zkri.2009.1128
Tags Compressibility, High pressure, Over-hydration, Powder diffraction structure analysis, X-ray diffraction, Zeolite NaA
Authors Likhacheva Anna Yu. 1 , Malyshev Mikhail E. 2 , Manakov Andrey Yu. 3 , Goryainov Sergei V. 1 , Ancharov Aleksey I. 4
Affiliations
1 Institute of Geology and Mineralogy SibD RAS, pr. ac.Koptyuga 3, 630090 Novosibirsk, Russia
2 Boreskov Institute of Catalysis SibD RAS, Novosibirsk, Russia
3 Institute of Inorganic Chemistry SibD RAS, Novosibirsk, Russia
4 Budker Institute of Nuclear Physics SibD RAS, Novosibirsk, Russia

Funding (4)

1 Президиум РАН 8
2 Russian Foundation for Basic Research 06-05-64542
3 Президиум СО РАН 43
4 Президиум РАН P-9-3

Abstract: High-pressure synchrotron X-ray powder diffraction measurements of a synthetic zeolite NaA were carried out up to 2.5 GPa using pure water as pressure-transmitting (P) medium to provide non-hydrostatic (wet) conditions in a diamond anvil cell. The compressibility of wet zeolite NaA is similar to that measured at hydrostatic compression in water within the P-range 0–0.8 GPa, whereas between 1–2 GPa the zeolite becomes slightly more compressible and progressively amorphizes due to the non-hydrostatic conditions. Rietveld refinement at 0.37 GPa reveals a selective additional filling of the H2O sites in α- and β-cage, leading to about 30% increase of the total water content. The over-hydrated state of the zeolite is partially preserved after the pressure release. The over-hydration of zeolite pores, combined with a partial disordering at the onset of amorphization, apparently provides necessary conditions for the P-induced enhancement of water-cationic diffusion and the corresponding increase of ionic conductivity observed in zeolite NaA in non-hydrostatic water medium.
Cite: Likhacheva A.Y. , Malyshev M.E. , Manakov A.Y. , Goryainov S.V. , Ancharov A.I.
Non-Hydrostatic Compression of Zeolite NaA in Water Medium: Connection to Anomalous Conductivity
Zeitschrift für Kristallographie. 2009. V.224. N3. P.137-143. DOI: 10.1524/zkri.2009.1128 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Aug 29, 2008
Accepted: Oct 13, 2008
Published print: Mar 1, 2009
Published online: Sep 25, 2009
Identifiers:
publication_identifier.wos_identifier_type WOS:000265199100002
publication_identifier.scopus_identifier_type 2-s2.0-63849137237
publication_identifier.rinz_identifier_type 13607237
publication_identifier.accession_number_identifier_type 2009:460620
publication_identifier.chemical_accession_number_identifier_type 152:133007
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