Heat capacity of Ce0.8Y0.2O1.9 and the effects of dissolution of water/hydrogen

The heat capacity of polycrystalline Ce0*8Y0*2O1*9 and of its water/hydrogen--dissolved sample was measured from 6 to 300K using an adiabatic calorimeter. The heat capacity of the water /hydrogen--dissolved sample is larger than that of the dry sample below 50K, and the difference is about 10% at 10...

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Veröffentlicht in:	Thermochimica acta 2005-06, Vol.431 (1-2), p.49-52
Hauptverfasser:	KAWAJI, Hitoshi, YOKOBAYASHI, Yusuke, ATAKE, Tooru, TOJO, Takeo, SAKAI, Natsuko, YOKOKAWA, Harumi
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) Exact sciences and technology Inorganic chemistry and origins of life Preparations and properties
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The heat capacity of polycrystalline Ce08Y02O1*9 and of its water/hydrogen--dissolved sample was measured from 6 to 300K using an adiabatic calorimeter. The heat capacity of the water /hydrogen--dissolved sample is larger than that of the dry sample below 50K, and the difference is about 10% at 10K. Such a difference should originate in the change of lattice vibration spectra caused by the introduction of water/hydrogen. The mechanism is discussed in terms of the defect structure.
ISSN:	0040-6031 1872-762X
DOI:	10.1016/j.tca.2005.01.035