Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Heat capacity by differential scanning calorimetry and thermodynamic functions of BaCe0.8Gd0.1Y0.1O2.9 in the temperature range of 166–790 K. / Matskevich, N. I.; Wolf, T.; Pischur, D. P. и др.
в: Journal of Thermal Analysis and Calorimetry, Том 134, № 2, 01.11.2018, стр. 1123-1128.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Heat capacity by differential scanning calorimetry and thermodynamic functions of BaCe0.8Gd0.1Y0.1O2.9 in the temperature range of 166–790 K
AU - Matskevich, N. I.
AU - Wolf, T.
AU - Pischur, D. P.
AU - Kozlova, S. G.
AU - Gelfond, N. V.
AU - Vyazovkin, I. V.
AU - Chernov, A. A.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - In the present study, the heat capacities of barium cerate doped by gadolinium and yttrium oxides were measured for the first time in the temperature range of 166–790 K. The differential scanning calorimeter was used for investigation. There was reproducible anomaly with maximum at 601 K and minimum at 679 K. The experimental results were used to calculate the thermodynamic functions: smoothed heat capacities, enthalpy increment (Hm o(T) − Hm o(298.15)), and entropy (Sm o(T)). The heat capacity in the temperature range of 166–602 K was described by a polynomial of the form: Cp,m o(T) = 83.140 + 0.14943 T − 1.1537 × 10−4T2− 3.6358 × 105/T2 (J mol−1 K−1). Heat capacity of BaCe0.8Y0.1Gd0.1O2.9 in the temperature range of 602–680 K was described by a polynomial: Cp,m o(T) = − 118.18 + 0.71961 T − 5.5387 × 10−4T2 + 5.6948 × 10+6/T2 (J mol−1 K−1). The heat capacity in the temperature range of 680–790 K was well described by the equation: Cp,m o(T) = 1987.1 − 6.9263 T + 8.3407 × 10−3T2− 3.1992 × 10−6T3 (J mol−1 K−1).
AB - In the present study, the heat capacities of barium cerate doped by gadolinium and yttrium oxides were measured for the first time in the temperature range of 166–790 K. The differential scanning calorimeter was used for investigation. There was reproducible anomaly with maximum at 601 K and minimum at 679 K. The experimental results were used to calculate the thermodynamic functions: smoothed heat capacities, enthalpy increment (Hm o(T) − Hm o(298.15)), and entropy (Sm o(T)). The heat capacity in the temperature range of 166–602 K was described by a polynomial of the form: Cp,m o(T) = 83.140 + 0.14943 T − 1.1537 × 10−4T2− 3.6358 × 105/T2 (J mol−1 K−1). Heat capacity of BaCe0.8Y0.1Gd0.1O2.9 in the temperature range of 602–680 K was described by a polynomial: Cp,m o(T) = − 118.18 + 0.71961 T − 5.5387 × 10−4T2 + 5.6948 × 10+6/T2 (J mol−1 K−1). The heat capacity in the temperature range of 680–790 K was well described by the equation: Cp,m o(T) = 1987.1 − 6.9263 T + 8.3407 × 10−3T2− 3.1992 × 10−6T3 (J mol−1 K−1).
KW - Doped barium cerate
KW - DSC
KW - Heat capacity
KW - PROTON-CONDUCTING ELECTROLYTES
KW - CERATE
KW - CRYSTAL-STRUCTURE
KW - PERFORMANCE
KW - BACE1-XREXO3-DELTA
KW - PHASE
KW - ENTHALPY
KW - EVOLUTION
KW - DIFFRACTION
KW - BACE0.8Y0.2O3-DELTA
UR - http://www.scopus.com/inward/record.url?scp=85046035393&partnerID=8YFLogxK
U2 - 10.1007/s10973-018-7248-1
DO - 10.1007/s10973-018-7248-1
M3 - Article
AN - SCOPUS:85046035393
VL - 134
SP - 1123
EP - 1128
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
SN - 1388-6150
IS - 2
ER -
ID: 12916326