Rb2O-V2O5体系热力学优化
首发时间:2017-11-24
摘要:本文对Rb2O-V2O5体系相图、热力学数据以及晶体结构数据进行综述与评估,解决了已有相图实验数据之间关于"X"相是否存在的矛盾,获得了可靠的实验数据。采用阴、阳离子贡献方法对中间化合物RbV3O8、RbVO3、Rb32V18O61、Rb4V2O7和Rb3VO4的298 K生成焓(元素参考态)和标准熵进行估算。通过对Rb2O-V2O5体系的液相及中间化合物建立热力学模型,利用相图计算技术进行热力学优化,很好的重现了相图和热力学实验数据,最终获得一套合理、可靠、自洽的模型参数。
For information in English, please click here
Thermodynamic Optimization of Rb2O-V2O5 System
Abstract:In this paper,the Rb2O-V2O5 system phase diagram,thermodynamic dataand crystal structure data werereviewed and evaluated. The contradiction between the existing phase diagram experimental data about "X" phase is solved.The enthalpyof formation (element reference) and standard entropy of 298 K for RbV3O8, RbVO3, Rb32V18O61, Rb4V2O7 and Rb3VO4 were estimated by using the method of anion and cation contribution.The Rb2O-V2O5 system was thermodynamically optimized by using the Calculation of Phase Diagram technique,which included the establishment of the thermodynamic model for the liquid phase and stoichiometric compounds.Finally,the phase diagram and thermodynamic experimental data of Rb2O-V2O5 systemwere well reproduced and a series of reasonable, reliable and self-consistent model parameters were obtained.
Keywords: Rb2O-V2O5 Phase Diagrams Thermodynamics Thermodynamic model
基金:
引用
No.****
动态公开评议
共计0人参与
勘误表
Rb2O-V2O5体系热力学优化
评论
全部评论0/1000