Thermodynamic Studies on Ba3SrNb2O9 Employing Calorimeter

Year 2021, Volume: 24 Issue: 4, 50 - 55, 01.12.2021

Pradeep Samui , B. Singh H. Khadilkar S. Rakshit S. Parida

https://doi.org/10.5541/ijot.937513

Cited By: 2

Abstract

In this study, Ba3SrNb2O9(s) was synthesized using conventional solid-state reaction route, characterized by powder XRD and SEM-EDAX. The standard molar enthalpy of formation of Ba3SrNb2O9(s) was determined measuring enthalpies of solution of Ba3SrNb2O9(s) in {PbO + B2O3} solvent (in 2:1 molar ratio) at T = 966 K using an oxide melt solution high temperature calorimeter. The enthalpy increment of Ba3SrNb2O9(s) was measured with same calorimeter. The heat capacity of the Ba3SrNb2O9(s) was also measured employing DSC. Based on the smoothed values of heat capacity, a table of thermodynamic data from 298 to 1000 K for Ba3SrNb2O9(s) was also constructed.

Keywords

Niobates , Enthalpy of formation , Heat Capacity , dsc , high temperature calorimeter

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