SELECTIVE OXIDATION OF CROTYL ALCOHOL AND CROTONALDEHYDE ON V2O5/ MgO: IN SITU FTIR STUDY
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F09%3A00008488" target="_blank" >RIV/00216275:25310/09:00008488 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
SELECTIVE OXIDATION OF CROTYL ALCOHOL AND CROTONALDEHYDE ON V2O5/ MgO: IN SITU FTIR STUDY
Popis výsledku v původním jazyce
The adsorption of crotyl alcohol, crotonaldehyde and crotonic acid on MgO, V2O5 and V2O5/ MgO mixed oxide was studied under oxidizing conditions by in situ FTIR spectroscopy. The results were further analyzed in order to investigate the surface intermediates of crotonaldehyde oxidative dehydrogenation to maleic anhydride. A more stable surface compound - alkoxide was for all the oxides found during the crotyl alcohol adsorption at room temperature (RT). The reaction between the adsorbed crotonaldehyde and the oxygen atom of the catalyst resulted in the formation of carboxylate at higher temperatures (T>373 K). Presence of two different reaction products (furane and maleic anhydride) was detected from IR spectra following the crotonaldehyde adsorption at various oxygen pressures. It can be deduced, that crotonic acid easily dissociates to form the surface carboxylate-crotonate, which is further oxidized to maleate and consequently to maleic anhydride at 573 K.
Název v anglickém jazyce
SELECTIVE OXIDATION OF CROTYL ALCOHOL AND CROTONALDEHYDE ON V2O5/ MgO: IN SITU FTIR STUDY
Popis výsledku anglicky
The adsorption of crotyl alcohol, crotonaldehyde and crotonic acid on MgO, V2O5 and V2O5/ MgO mixed oxide was studied under oxidizing conditions by in situ FTIR spectroscopy. The results were further analyzed in order to investigate the surface intermediates of crotonaldehyde oxidative dehydrogenation to maleic anhydride. A more stable surface compound - alkoxide was for all the oxides found during the crotyl alcohol adsorption at room temperature (RT). The reaction between the adsorbed crotonaldehyde and the oxygen atom of the catalyst resulted in the formation of carboxylate at higher temperatures (T>373 K). Presence of two different reaction products (furane and maleic anhydride) was detected from IR spectra following the crotonaldehyde adsorption at various oxygen pressures. It can be deduced, that crotonic acid easily dissociates to form the surface carboxylate-crotonate, which is further oxidized to maleate and consequently to maleic anhydride at 573 K.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Reaction Kinetics and Catalysis Letters
ISSN
0133-1736
e-ISSN
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Svazek periodika
96
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
HU - Maďarsko
Počet stran výsledku
7
Strana od-do
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Kód UT WoS článku
000264183300014
EID výsledku v databázi Scopus
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