In Situ Raman Spectroscopy of Catalysts: Examples from Current Research
In Situ Raman Spectroscopy of Catalysts: Examples from Current Research
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DOI：
10.1007/s11244-013-0138-7
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发表时间：
2013-08
影响因子：
3.6
通讯作者：
C. Hess
中科院分区：
文献类型：
--
作者：
C. Hess
概述了拉曼光谱在催化材料表征中的应用潜力。拉曼光谱可以原位和真实的时间记录，在催化剂的合成和操作期间提供分子水平的信息。拉曼光谱在宽温度范围内、在各种环境中以及适应于不同反应器几何形状的使用强调了该方法的多功能性。从目前的研究中的例子说明了可能的应用，在催化原位拉曼光谱。其中包括分散型氧化铈催化剂的可控合成和结构表征、氧化铈材料中缺陷的表征以及用于NOx储存-还原催化剂的氧化钡中NO2储存机理的阐明。文章最后总结了来自上述实施例的催化剂的原位拉曼光谱的关键特征。
The potential of Raman spectroscopy for the characterization of catalytic materials is outlined. Raman spectra can be recorded in situ and in real time providing molecular level information during the synthesis and operation of catalysts. The use of Raman spectroscopy over a wide temperature range, in various environments and adapted to different reactor geometries underlines the versatility of the method. Examples from current research illustrate possible applications of in situ Raman spectroscopy in catalysis. These include the controlled synthesis and structural characterization of dispersed molybdena catalysts, the characterization of defects in ceria materials and the elucidation of the NO2storage mechanism in barium oxide used in NOxstorage–reduction catalysts. The article concludes with a summary of key features of in situ Raman spectroscopy of catalysts as derived from the above examples.