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The one-pot ethyl acetate syntheses: The role of the support in the oxidative and the dehydrogenative routes

Paper ID Volume ID Publish Year Pages File Format Full-Text
41862 45902 2010 5 PDF Available
Title
The one-pot ethyl acetate syntheses: The role of the support in the oxidative and the dehydrogenative routes
Abstract

Both the dehydrogenative and the oxidative routes for the one-pot ethyl acetate synthesis from ethanol were studied using physical mixtures of Cu/ZnO/Al2O3 or PdO/m-ZrO2 with three different ZrO2. The characterization of these catalysts and oxides was carried out by N2 physisorption, pyridine adsorption, CO2 thermo desorption, dynamic light scattering and X-ray diffraction. It was inferred that the second step of the dehydrogenative and oxidative routes, i.e. acetaldehyde and ethanol or ethoxide condensation are very similar. Moreover, it could be verified that this condensation occurs on the ZrO2 surface and also that the basic properties of these oxides influence the catalytic behavior of the physical mixtures (Cu/ZnO/Al2O3 + ZrO2 and PdO/m-ZrO2 + ZrO2). The transport of acetaldehyde from the dehydrogenative sites to the ZrO2 surface might be associated with the spillover phenomenon.

Graphical abstractThe dehydrogenative and oxidative routes for the one-pot ethyl acetate synthesis from ethanol were studied using physical mixtures of Cu/ZnO/Al2O3 or PdO/m-ZrO2 with ZrO2. It was inferred that acetaldehyde and ethoxide condensation is very similar for both routes and occurs on the ZrO2 surface. The transport of acetaldehyde from the catalyst to the oxide is associated with the spillover phenomenon.Figure optionsDownload full-size imageDownload high-quality image (85 K)Download as PowerPoint slide

Keywords
Zirconia; Ethyl acetate; Condensation; Ethanol; One-step synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 380, Issues 1–2, 31 May 2010, Pages 113–117
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Full-text PDF Download
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