A new cell for the study of in situ chemical reactions using X-ray absorption spectroscopy

6533b822fe1ef96bd127cd78

RESEARCH PRODUCT

A new cell for the study of in situ chemical reactions using X-ray absorption spectroscopy

Fabio D'anca Alessandro Longo Giuseppe Pantaleo Antonino Martorana Francesco D'acapito Antonella Balerna Francesco Giannici Leonarda F. Liotta

subject

In situ Nuclear and High Energy Physics Analytical chemistry Chemical reaction Redox Catalysis Specimen Handling Catalysis three-way catalyst X-Ray Diffraction Absorption (electromagnetic radiation)Instrumentation Platinum X-ray absorption spectroscopy Radiation Spectrometer Chemistry Temperature Spectrometry X-Ray Emission Carbon Dioxide in situ EXAFS Oxygen Yield (chemistry)Flow Injection Analysis Zirconium Oxidation-Reduction strong metal support interaction

description

An in situ cell for reductive and oxidative treatments at different temperatures that allows the possibility of recording data as a function of temperature has been designed and constructed for X-ray absorption experiments at the GILDA beamline BM08 of ESRF. The cell is linked to a mass quadrupole spectrometer providing control of the reaction gases and monitoring of the products. The apparatus allows measurements to be performed both in transmission and fluorescence geometry. The cell was tested by studying the CO oxidation reaction promoted by a Pt/ceria-zirconia-supported catalyst. The CO(2) yield is correlated with the structural results confirming the existence of a strong metal-support interaction between the Pt metal clusters and the ceria-zirconia support.

year	journal	country	edition	language
2005-01-01

10.1107/s090904950501143x http://hdl.handle.net/10447/7319

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