Thermodynamic assessment of V2O3–TiO2 system
The composite oxides involving the V2O3, TiO2 and other oxides could be used as the oxidation catalyst. The phase diagram of the V2O3-TiO2 pseudo-binary system is the fundamental to these practical applications; however, no diagram fully assessed of this system is published. Therefore, a set of critically evaluated thermodynamic parameters of the V2O3-TiO2 pseudo-binary system is urgently needed. In order to obtain an assessed V2O3-TiO2 diagram which corresponds with the experimental data well, the existing phase diagram and thermodynamic data of V2O3-TiO2 system are assessed, and the phase diagram are calculated and optimized by using the CALPHAD technology, and some compounds with argument are discussed. In this calculation, the liquid phase, V2O3 and TiO2 are treated with the substitutional solution model. The compound V2TiO5, V2Ti2O7 and V2Ti3O9 are treated with the stoichiometric compounds. A self consistent set of the optimized thermodynamic parameters has been derived, which is in better agreement with most of the experiments. Compared with experimental data and the results in this work as well as the results reported previously, it is demonstrated that the present thermodynamic assessment is in better agreement with most of the experiments.
Phase diagram V2O3–TiO2 thermodynamics substitutional solution model
Hongbin WANG Guangxiang TAN Ming ZHU Aitao QIU Xionggang LU Chonghe LI
Shanghai Key Laboratory of Modern Metallurgy and Materials Processing, Shanghai University, 200072, General Research Institute for Nonferrous Metals, Beijing 100088, China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-8
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）