Thermochemical investigations of bismuth oxide doped by yttrium

Thermodynamic Properties and Stability of In‐Doped SrCeO3 Proton‐Conducting Ceramics

“…[13] All compounds were also characterized by chemical analysis, [14][15] and analytical results are presented in Table 1. Analyses indicated that impurities of Ho, Dy, Yb, La, Tm, Er, Pr, Sm, Te, Ca, Mg, Mn, Pb, and Ag were present at levels of between 10 -3 and 10 -4 at.-%.…”

“…Detailed descriptions of the construction and the procedures for performing experiments and checking the calorimeter are presented in refs. [6,[14][15] The computer controller for the platinum thermometer and the Matlab program were written at our laboratory. The program allows one to measure and [17] and 17.47 Ϯ 0.07 kJ mol -1 in ref.…”

Preparation, Stability and Thermodynamic Properties of Nd‐ and Lu‐Doped BaCeO3 Proton‐Conducting Ceramics

“…All compounds were also characterized by chemical analysis. [16,17] Analytical results are presented in Table 1. For the analysis of Nd, Ce and Lu a spectrophotometric method (spectrophotometer SF-46) was used.…”

“…The construction of the solution calorimeter and the experimental procedure are described elsewhere. [12,17] The resistance of the platinum resistance thermometer was measured with a high precision voltmeter Solartron 7061. The voltmeter was connected to the computer through an interface and the program was written in Matlab [19] at our laboratory.…”

“…Errors were calculated for the 95 % confidence interval using standard procedures for the treatment of the experimental data. [12,15,17] The measured enthalpies of dissolution were used for calculating the enthalpy of the reaction below Ba(s) + 0.2Nd(s) + 0.8Ce(s) + 1.45O 2 (g) = BaCe 0.8 Nd 0.2 -O 2.9 (s) according to the equation…”