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%2F00216275%3A25310%2F17%3A39902740" target="_blank" >RIV/00216275:25310/17:39902740 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22320/17:43913293

Result on the web

<a href="http://dx.doi.org/10.1007/s11144-017-1159-1" target="_blank" >http://dx.doi.org/10.1007/s11144-017-1159-1</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 N-2 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 weight-hourly space velocity and temperature in the range 1-4 h(-1) and 150-250 degrees 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 degrees 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

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

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

1878-5190

e-ISSN

—

Volume of the periodical

121

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

161-173

UT code for WoS article

000401935400012

EID of the result in the Scopus database

2-s2.0-85012911257