In Situ Observation of Rh-CaTiO3 Catalysts during Reduction and Oxidation Treatments by Transmission Electron Microscopy
In Situ Observation of Rh-CaTiO3 Catalysts during Reduction and Oxidation Treatments by Transmission Electron Microscopy
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DOI：
10.1021/acscatal.6b03604
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发表时间：
2017-03-01
期刊：
影响因子：
12.9
通讯作者：
Pan, Xiaoqing
中科院分区：
文献类型：
--
作者：
Dai, Sheng;Zhang, Shuyi;Pan, Xiaoqing
利用带有样品加热器的电子透明气体电池，在大气压下，在高温（250-700℃）下对高表面积掺铑的CaTiO3粉末进行扫描透射电子显微镜观察，发现Rh纳米颗粒在环境气体的氧化还原循环和粉末烧结过程中发生了周期性沉淀溶解。
Scanning transmission electron microscopy of high-surface-area Rh-doped CaTiO3 powder, conducted near atmospheric pressure at elevated temperature (250-700 degrees C) by means of an electron-transparent gas cell with a sample heater, provides evidence for both cyclical precipitation dissolution of Rh nanoparticles in response to redox cycling of the ambient gas and sintering of the powder.