Published 2013 | Version v1
Journal article Metadata-only

A DRIFTS study of the partial oxidation of ethanol on Rh catalysts

Creators

  • 1. Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Departamento de Engenharia Quimica e de Petroleo

Description

The partial oxidation of ethanol on γ-Al2O3, CeO2, ZrO2 and CexZr1-xO2 supported rhodium catalysts was investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). The catalysts were characterized by temperature-programmed reduction (TPR) and cyclohexane dehydrogenation. DRIFTS studies on the partial oxidation of ethanol showed that ethanol is adsorbed dissociatively, through O-H bond breaking, with the formation of ethoxy species, followed by successive dehydrogenation to acetaldehyde and acetyl species. Further oxidation to acetate and carbonate species lead to the formation of CO, CH4 and H2 by decomposition. The presence of CeO2 in the catalysts favored the oxidation steps due to its oxygen storage capacity. (author)

Availability note (English)

Available from http://www.scielo.br/pdf/qn/v36n3/a05v36n3.pdf

Additional details

Additional titles

Original title (Portuguese)
Estudo da oxidacao parcial do etanol em catalisadores de Rh por DRIFTS

Identifiers

URL
http://www.scielo.br/pdf/qn/v36n3/a05v36n3.pdf;

Publishing Information

Journal Title
Quimica Nova
Journal Volume
36
Journal Issue
3
Journal Page Range
p. 375-381
ISSN
0100-4042

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
44093142
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACETALDEHYDE; ALUMINIUM OXIDES; CALCINATION; CATALYSTS; CERIUM; CERIUM OXIDES; CYCLOHEXANE; DEHYDROGENATION; ETHANOL; ETHOXY RADICALS; HEXANE; HYDROGEN; INFRARED SPECTRA; RHODIUM; YTTRIUM; ZIRCONIUM; ZIRCONIUM OXIDES
Descriptors DEC
ALCOHOLS; ALDEHYDES; ALKANES; ALKOXY RADICALS; ALUMINIUM COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; CYCLOALKANES; DECOMPOSITION; ELEMENTS; HYDROCARBONS; HYDROXY COMPOUNDS; METALS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; PYROLYSIS; RADICALS; RARE EARTH COMPOUNDS; RARE EARTHS; REFRACTORY METALS; SPECTRA; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; ZIRCONIUM COMPOUNDS