Issue 9, 1992
From the journal:

Journal of the Chemical Society, Faraday Transactions

Rh–CeO2 interaction induced by high-temperature reduction. Characterization and catalytic behaviour in transient and continuous conditions

Alessandro Trovarelli,   Giuliano Dolcetti,   Carla de Leitenburg,   Jan Kašpar,   Paola Finetti  and  Antonino Santoni  

Abstract

The effects of the high-temperature reduction of Rh/CeO2 catalyst on the hydrogenation of CO, CO2, acetone and ethene, and on the hydrogenolysis of ethane, in transient and continuous conditions, have been investigated. The high-temperature reduction (HTR) at 773 K induced a transient Rh–CeO2 interaction in the catalyst which enhances the rate of CO, CO2 and acetone hydrogenation. Temperature-programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS) show the reduction of Ce4+ to Ce3+ after HTR in the near surface layers. We suggest that the oxygen vacancies on the support (i.e. presence of Ce3+) can interact with the CO moiety promoting its activation.

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Article information

DOI
https://doi.org/10.1039/FT9928801311
Article type
Paper

J. Chem. Soc., Faraday Trans., 1992,88, 1311-1319

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Rh–CeO2 interaction induced by high-temperature reduction. Characterization and catalytic behaviour in transient and continuous conditions

A. Trovarelli, G. Dolcetti, C. de Leitenburg, J. Kašpar, P. Finetti and A. Santoni, J. Chem. Soc., Faraday Trans., 1992, 88, 1311 DOI: 10.1039/FT9928801311

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