Aspects of potassium leaching in the heterogeneously catalyzed transesterification of rapeseed oil
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F14%3A39898174" target="_blank" >RIV/00216275:25310/14:39898174 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.fuel.2013.07.081" target="_blank" >http://dx.doi.org/10.1016/j.fuel.2013.07.081</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fuel.2013.07.081" target="_blank" >10.1016/j.fuel.2013.07.081</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Aspects of potassium leaching in the heterogeneously catalyzed transesterification of rapeseed oil
Popis výsledku v původním jazyce
The main aim of the work is to define the critical aspects of the stability of solid K-based catalysts (K-CaO, K-MgO and K-Al2O3) in the transesterification of rapeseed oil by methanol. High activity of these catalysts is often reported, but their stability is recently a matter for discussion. The attention is focused on (i) the explanation of the reason of potassium leaching from the solid K-based catalysts into the liquid phase during the reaction, (ii) a description of the role of leached K-species in the reaction and (iii) the suggestion of the mechanism of the potassium leaching from the solid K-based catalysts. It was found that the leaching of K-species is caused by glycerol that is formed during the reaction. The mechanism of K-leaching from the solid catalyst was suggested. The strength of alcohols to attack the K-species on solid catalysts increased with the number of alcohol groups and their mutual distances and has following order: glycerol } 1,3-propanediol } 1,2-propanedi
Název v anglickém jazyce
Aspects of potassium leaching in the heterogeneously catalyzed transesterification of rapeseed oil
Popis výsledku anglicky
The main aim of the work is to define the critical aspects of the stability of solid K-based catalysts (K-CaO, K-MgO and K-Al2O3) in the transesterification of rapeseed oil by methanol. High activity of these catalysts is often reported, but their stability is recently a matter for discussion. The attention is focused on (i) the explanation of the reason of potassium leaching from the solid K-based catalysts into the liquid phase during the reaction, (ii) a description of the role of leached K-species in the reaction and (iii) the suggestion of the mechanism of the potassium leaching from the solid K-based catalysts. It was found that the leaching of K-species is caused by glycerol that is formed during the reaction. The mechanism of K-leaching from the solid catalyst was suggested. The strength of alcohols to attack the K-species on solid catalysts increased with the number of alcohol groups and their mutual distances and has following order: glycerol } 1,3-propanediol } 1,2-propanedi
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
<a href="/cs/project/GAP106%2F11%2F0773" target="_blank" >GAP106/11/0773: Analýza vztahu struktury a aktivity acido-bazických katalyzátorů v esterifikačních a transesterifikačních reakcích</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Fuel
ISSN
0016-2361
e-ISSN
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Svazek periodika
115
Číslo periodika v rámci svazku
January
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
9
Strana od-do
443-451
Kód UT WoS článku
000325647000049
EID výsledku v databázi Scopus
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