Partial oxidation of ethanol over ZrO2-supported vanadium catalysts

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F17%3AN0000009" target="_blank" >RIV/62243136:_____/17:N0000009 - isvavai.cz</a>

Result on the web

<a href="http://link.springer.com/article/10.1007%2Fs11144-017-1159-1" target="_blank" >http://link.springer.com/article/10.1007%2Fs11144-017-1159-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11144-017-1159-1" target="_blank" >10.1007/s11144-017-1159-1</a>

Result language

angličtina

Original language name

Partial oxidation of ethanol over ZrO2-supported vanadium catalysts

Original language description

Zirconia-supported vanadium catalysts were prepared by the wet impregnation of two different zirconia supports using ammonium metavanadate in aqueous hydrogen peroxide solution. The catalysts were characterized by N2 physisorption, X-ray fluorescence analysis (XRF), X-ray diffraction (XRD) and Raman spectroscopy to determine their textural properties, chemical composition and the nature of vanadium species. The partial oxidation of ethanol to acetaldehyde was carried out in a fixed bed reactor at atmospheric pressure varying the weighthourly space velocity and temperature in the range 1–4 h-1 and 150–250 deg C, respectively. In addition to acetaldehyde, a range of oxygenated and deoxygenated by-products was observed. Diethyl ether and ethyl acetate were detected in the reaction mixture with low and almost constant amount. These products are formed through a homogeneous reaction in the free volume of reactor or pre-heating zone irrespective of catalyst used. Vanadium species anchored on the zirconia surface are able to activate ethanol molecules already at 150 deg C with the high selectivity to acetaldehyde. A comparison of vanadium speciation and catalytic results led to conclusion that oligomeric vanadium species and small oxide clusters have no deterioration effect on acetaldehyde selectivity.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

<a href="/en/project/GA15-19780S" target="_blank" >GA15-19780S: The investigation of the active sites in supported vanadia catalysts for the selective oxidation of ethanol</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Reaction Kinetics, Mechanisms and Catalysis

ISSN

1878-5204

e-ISSN

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Volume of the periodical

121

Issue of the periodical within the volume

1

Country of publishing house

HU - HUNGARY

Number of pages

13

Pages from-to

161–173

UT code for WoS article

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EID of the result in the Scopus database

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