Thermodynamic Studies on Sr5Nb4O15

IF 0.9 Q4 THERMODYNAMICS

International Journal of Thermodynamics Pub Date : 2022-12-24 DOI:10.5541/ijot.1157497

P. Samui, Santosh Bhojane, B. Singh, Swarup Rakshi̇t

引用次数: 0

Abstract

The SrO–Nb2O5 system, especially Sr5Nb4O15 compound is of interest for their use as an electroceramics. In this work, Sr5Nb4O15 compound was synthesized by solid-state reaction and characterised by XRD. Thermodynamic properties like heat capacity, enthalpy of formation and Gibbs energy of formation of Sr5Nb4O15 have been measured. The standard molar enthalpy of formation of Sr5Nb4O15(s) was determined using an oxide melt solution high temperature calorimeter. Based on these experimental data, a self-consistent thermodynamic function of this compound was also generated. This thermodynamic data is essential for the optimization of synthesis conditions for materials and for the evaluation of their stability under appropriate technological operating conditions.

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Sr5Nb4O15的热力学研究

SrO–Nb2O5体系，特别是Sr5Nb4O15化合物，因其用作电陶瓷而备受关注。本工作通过固相反应合成了Sr5Nb4O15化合物，并用XRD对其进行了表征。测定了Sr5Nb4O15的热容、生成焓和生成吉布斯能等热力学性质。使用氧化物熔融溶液高温量热计测定Sr5Nb4O15（s）的标准摩尔生成焓。基于这些实验数据，还产生了该化合物的自洽热力学函数。该热力学数据对于优化材料的合成条件以及评估其在适当的技术操作条件下的稳定性至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermodynamics THERMODYNAMICS-

CiteScore

1.50

自引率

12.50%

发文量

期刊介绍： The purpose and scope of the International Journal of Thermodynamics is · to provide a forum for the publication of original theoretical and applied work in the field of thermodynamics as it relates to systems, states, processes, and both non-equilibrium and equilibrium phenomena at all temporal and spatial scales. · to provide a multidisciplinary and international platform for the dissemination to academia and industry of both scientific and engineering contributions, which touch upon a broad class of disciplines that are foundationally linked to thermodynamics and the methods and analyses derived there from. · to assess how both the first and particularly the second laws of thermodynamics touch upon these disciplines. · to highlight innovative & pioneer research in the field of thermodynamics in the following subjects (but not limited to the following, novel research in new areas are strongly suggested): o Entropy in thermodynamics and information theory. o Thermodynamics in process intensification. o Biothermodynamics (topics such as self-organization far from equilibrium etc.) o Thermodynamics of nonadditive systems. o Nonequilibrium thermal complex systems. o Sustainable design and thermodynamics. o Engineering thermodynamics. o Energy.