Thermodynamic properties of LaCrO3
作者： Z CHEN , X XING , W YUAN , X HUANG , H LI
DOI: 10.1016/S1001-0521(06)60099-5
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摘要: Abstract The nano powders of LaCrO3 were prepared by a sol-gel route. heat capacity from 350 to 550 K was measured DSC method and expressed as: Cp(LaCrO3) (±0.112) = 166.844 − 8.500 × 10−3T 1.022 106T−2 (J/(mol·K)) (350–550 K). An EMF measurement assembly developed with CaF2 as an electrolyte for the galvanic cell. From data reversible cell, (−) Pt, La2O3, LaF3, O2 (1 atm)|CaF2|O2(1 atm), LaCrO3, Cr2O3, Pt(+), relevant value Gibbs free energy, energy formation calculated 700 885 K: ΔGf,LaCrO3 −1555.364 + 0.354T (kJ/mol) (700–885 And change reaction simple oxides La2O3 Cr2O3 be: ΔGf,ox(LaCrO3) −94.758 8.530 10−2T(kJ/mol)
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