UV-Vis Microspectroscopy: Probing the Initial Stages of Supported Metal Oxide Catalyst Preparation

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• 作者：Leon G. A. van de Water ; Jaap A. Bergwerff ; T. Alexander Nijhuis ; Krijn P. de Jong ; and Bert M. Weckhuysen
• 刊名：Journal of the American Chemical Society
• 出版年：2005
• 出版时间：April 13, 2005
• 年：2005
• 卷：127
• 期：14
• 页码：5024 - 5025
• 全文大小：125K
• 年卷期：v.127,no.14(April 13, 2005)
• ISSN：1520-5126

文摘

A UV-vis microspectroscopy methodology for monitoring the speciation and macrodistribution of catalyst-precursor species inside catalyst-support bodies at the initial stages of catalyst preparation has been developed. The setup is based upon optical-fiber technology and allows spatially resolved analysis of bisected catalyst bodies. The potential of this tool is demonstrated by two pore-volume impregnation studies involving Ni²⁺ d-d transition bands and Cr⁶⁺ charge-transfer bands.