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Physical and Chemical Properties of CaCl2/H2O and LiBr/H2O Systems Confined to Nanopores of Silica Gels

Published online by Cambridge University Press:  10 February 2011

Yurii I. Aristov ,
Mikhail M. Tokarev ,
Gaetano Cacciola ,
Giovanni Restuccia ,
Gaetano DiMarco  and
Valentin N. Parmon
Yurii I. Aristov
Affiliation:
Boreskov Institute of Catalysis Russian Academy of Sciences, Prospect Lavrentieva, 5, Novosibirsk, 630090, Russia, [email protected]
Mikhail M. Tokarev
Affiliation:
Boreskov Institute of Catalysis Russian Academy of Sciences, Prospect Lavrentieva, 5, Novosibirsk, 630090, Russia, [email protected]
Gaetano Cacciola
Affiliation:
Boreskov Institute of Catalysis Russian Academy of Sciences, Prospect Lavrentieva, 5, Novosibirsk, 630090, Russia, [email protected]
Giovanni Restuccia
Affiliation:
CNR/ITAE, 98126 Messina, Italy
Gaetano DiMarco
Affiliation:
CNR/ITS, Messina, Italy
Valentin N. Parmon
Affiliation:
Boreskov Institute of Catalysis Russian Academy of Sciences, Prospect Lavrentieva, 5, Novosibirsk, 630090, Russia, [email protected]
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Abstract

Here we present physical and chemical properties of CaCl2/H2O and LiBr/H2O systems confined to nanopores of silica gels. Sorption isobars, isosters and isotherms were measured at temperature 293 – 423K and vapor partial pressure 8–133 mbar. Specific heat of the systems was found as a function of temperature (300 – 400K) and sorbed water content (0 – 53 wt.%). Solidification/melting diagrams were measured over 170 – 320K temperature range at salt concentrations 0–50 wt.%. The results obtained evidenced a significant change in the thermodynamic properties of CaCl2/H2O and LiBr/H2O systems due to confinement to the silica gel micropores.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 463
Copyright
Copyright © Materials Research Society 1997

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References

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