在现场高温拉曼光谱和模拟以关联结构演变与二元酸系统中的粘度
Meiqin Sheng1, Jinglin You1, Xiang Xia1
1State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
Analytical chemistry
|June 2, 2025
概括
这项研究揭示了化酸结构如何随着成分和温度而变化. 较高的温度和氧化含量导致结构更简单,融粘度降低.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 地质化学 地质化学
背景情况:
- 了解化酸酸的结构对于控制它们的特性至关重要.
- 之前的研究已经探索了类似的系统,但缺乏K2O·nTiO2融中的物种分布的详细定量分析.
研究的目的:
- 量化确定氧物种在化K2O·nTiO2中的分布 (n = 0.5,1,2,3,4,6).
- 为了研究融化结构,温度和粘度之间的相关性.
- 阐明K2O含量在修改泰坦酸融体结构中的作用.
主要方法:
- 在现场使用高温拉曼光谱来分析样.
- 量子化学 (QC) 的初始计算被用来建模氧集群.
- 沃伊格特函数解卷用于光谱数据的定量分析.
主要成果:
- 高n (≥4) 的融主要含有[TiO4]和[TiO5]物种,少量[TiO6]八面体.
- 随着K2O含量增加 (n < 4),[TiO4]四面体主导了融化结构.
- 融化粘度随着温度和K2O含量增加而降低.
结论:
- 化K2O·nTiO2的结构演变强烈依赖于摩尔比 n.
- 在融中的物种化与其宏观性质粘度之间存在明显的关系.
- 这项研究为基于酸盐的融材料的结构性质关系提供了基本的见解.
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