Thermodynamic Studies on Ba3SrNb2O9 Employing Calorimeter

Authors : Pradeep SAMUİ, B SİNGH, H KHADİLKAR, S RAKSHİT, S PARİDA

Pages : 50-55

Doi:10.5541/ijot.937513

View : 11 | Download : 8

Publication Date : 2021-12-01

Article Type : Research Paper

Abstract :In this study, Ba3SrNb2O9insert ignore into journalissuearticles values(s); was synthesized using conventional solid-state reaction route, characterized by powder XRD and SEM-EDAX. The standard molar enthalpy of formation of Ba3SrNb2O9insert ignore into journalissuearticles values(s); was determined measuring enthalpies of solution of Ba3SrNb2O9insert ignore into journalissuearticles values(s); in {PbO + B2O3} solvent insert ignore into journalissuearticles values(in 2:1 molar ratio); at T = 966 K using an oxide melt solution high temperature calorimeter. The enthalpy increment of Ba3SrNb2O9insert ignore into journalissuearticles values(s); was measured with same calorimeter. The heat capacity of the Ba3SrNb2O9insert ignore into journalissuearticles values(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 Ba3SrNb2O9insert ignore into journalissuearticles values(s); was also constructed.
Keywords : Niobates, Enthalpy of formation, Heat Capacity, dsc, high temperature calorimeter