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Order-disorder phase transitions in Zn2(C8H4O4)2 .C6H12N2 in atmospheres of noble gases. / Pishchur, D. P.; Kompankov, N. B.; Lysova, A. A. и др.
в: Journal of Chemical Thermodynamics, Том 130, 01.01.2019, стр. 147-153.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Order-disorder phase transitions in Zn2(C8H4O4)2 .C6H12N2 in atmospheres of noble gases
AU - Pishchur, D. P.
AU - Kompankov, N. B.
AU - Lysova, A. A.
AU - Kozlova, S. G.
N1 - Publisher Copyright: © 2018 Elsevier Ltd
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The molar heat capacity of Zn2(C8H4O4)2 .C6H12N2 (Zn-DMOF) was measured for the first time at 4.8–302 K in atmospheres of noble gases 3He, 4He, and 40Ar under pressures P up to 1.52·105 Pa. It is shown that phase transitions reported earlier at Tc = 13, 58.9, and 131.2 K are second-order phase transitions associated with the ordering/disordering of organic ligands in Zn-DMOF. The transition entropy (ΔSm) in the temperature range of phase transitions associated with the ordering/disordering of C6H12N2 molecules decreases at Tc = 13 K and increases at Tc = 58.9 K as P increases from 0.51·105 to 1.52·105 Pa. The values of ΔSm do not depend on P in the region of the phase transition at Tc = 131.2 K associated with the ordering/disordering of C8H4O4 2− anions.
AB - The molar heat capacity of Zn2(C8H4O4)2 .C6H12N2 (Zn-DMOF) was measured for the first time at 4.8–302 K in atmospheres of noble gases 3He, 4He, and 40Ar under pressures P up to 1.52·105 Pa. It is shown that phase transitions reported earlier at Tc = 13, 58.9, and 131.2 K are second-order phase transitions associated with the ordering/disordering of organic ligands in Zn-DMOF. The transition entropy (ΔSm) in the temperature range of phase transitions associated with the ordering/disordering of C6H12N2 molecules decreases at Tc = 13 K and increases at Tc = 58.9 K as P increases from 0.51·105 to 1.52·105 Pa. The values of ΔSm do not depend on P in the region of the phase transition at Tc = 131.2 K associated with the ordering/disordering of C8H4O4 2− anions.
KW - Adiabatic calorimetry
KW - Heat capacity
KW - Noble gases loading
KW - Phase transition
KW - Zn-DMOF
KW - STORAGE
KW - METAL-ORGANIC FRAMEWORKS
KW - BEHAVIOR
KW - FLEXIBILITY
KW - HEAT-CAPACITY
KW - MOLECULES
UR - http://www.scopus.com/inward/record.url?scp=85054719433&partnerID=8YFLogxK
U2 - 10.1016/j.jct.2018.10.004
DO - 10.1016/j.jct.2018.10.004
M3 - Article
AN - SCOPUS:85054719433
VL - 130
SP - 147
EP - 153
JO - Journal of Chemical Thermodynamics
JF - Journal of Chemical Thermodynamics
SN - 0021-9614
ER -
ID: 17116088