在分子 (III) 支持的催化剂中建模氧空隙
Teng Zhang1, Albert Solé-Daura2, Sarah Hostachy1
1Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France.
Journal of the American Chemical Society
|October 27, 2018
概括
这项研究引入了一种装饰着西拉诺的多氧化,作为在上单位的分子支物. 这个模型系统提供了对的洞察力
科学领域:
- 无机化学
- 材料科学
- 催化剂
背景情况:
- 在氧化催化过程中,在二氧化上分离的原子是重要的中间体.
- 了解它们的电子结构和协调是优化催化活性的关键.
- 多氧化提供了一个多功能平台来建模这些系统.
研究的目的:
- 在二氧化上合成和描述单位的分子模型.
- 研究瓦纳物种的电子结构和协调环境.
- 阐明氧物种中尖端配体和电子配置的作用.
主要方法:
- 一个装饰着西兰的多氧体支物的合成.
- 瓦纳 (III) 与多氧化物状态的协调.
- 使用SQUID磁力测量,DFT计算,EPR,拉曼光谱和光谱电化学研究进行了表征.
主要成果:
- 一个由多氧酸支持的 (III) 复合物被成功合成.
- 复杂的模型减少了二氧化表面上孤立的原子.
- 电子结构分析揭示了顶端连接体和几何扭曲对d轨道的影响,包括具有脱的d1-V(IV) 和d1-W(V) 中心的独特基物种.
结论:
- 装饰着西拉诺的多氧体作为单位的有效分子支.
- 这项研究阐明了与氧化催化相关的物种的电子行为.
- 角形连接体协调和几何因素显著影响轨道稳定和电子移位.
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