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Issue 22, 2017
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Reactivity of methanol over copper supported on well-shaped CeO2: a TPD-DRIFTS study

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Abstract

TPD-DRIFTS experiments upon methanol adsorption over copper (5 wt%) supported on well-shaped ceria (polyhedra, rods and cubes) have been performed for the first time. Support morphology influences the type of methoxy and formate adsorbed species; in polyhedron and rod-shaped catalysts, linear methoxy and formate are the predominant species, while in cube-shaped catalyst, bridged species dominate. In the catalysts, desorption of H2 and CO2 increases significantly indicating that besides dehydrogenation of adsorbed methoxy, oxidation of adsorbed formate species is taking place. Heterogeneity of surface sites (copper, ceria and copper/ceria interface), surface defects and acid–base properties may account for the differences in the desorption profiles and reactivities of the adsorbed species over the three copper–ceria catalysts.

Graphical abstract: Reactivity of methanol over copper supported on well-shaped CeO2: a TPD-DRIFTS study

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Publication details

The article was received on 16 May 2017, accepted on 08 Aug 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7CY00984D
Citation: Catal. Sci. Technol., 2017,7, 5224-5235
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    Reactivity of methanol over copper supported on well-shaped CeO2: a TPD-DRIFTS study

    D. G. Araiza, A. Gómez-Cortés and G. Díaz, Catal. Sci. Technol., 2017, 7, 5224
    DOI: 10.1039/C7CY00984D

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