Thermochemistry of new holmium-calcium tellurite The new double holmium-calcium tellurite was synthesized by the ceramic technology. The formation of the equilibrium composition of the compound was monitored by X-ray diffraction. Double tellurite of holmium HoCaTeO 4.5 has been synthesized according to the results of X-ray analysis. Calorimetric investigation of the heat capacity of the new double tellurite HoCaTeO 4.5 was carried out for the first time in the range of 298.15-673 K. Calibration of the device was carried out on the basis of determining the thermal conductivity of a heat meter. The calorimeter performance was checked by measuring the heat capacity of α-Al 2 O 3. The experimental data and the specific molar heat capacities have been processed by methods of mathematical statistics. The dependence equation C p 0~f (T) has been derived on the basis of experimental data. According C p 0~f (T) and the calculated value of S 0 (298.15) of tellurite the temperature dependence of the thermodynamic functions H 0 (T)-H 0 (298.15), S 0 (T) and Ф хх (Т) have been determined. Abnormal jumps have been observed on the dependence C p 0~f (T) associated probably with the phase transitions of the second order. The thermodynamic characteristics of the new tellurite can serve as source materials for inclusion in fundamental data banks and reference books, used to predict the thermochemical constants of similar compounds.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.