Aspects of potassium leaching in the heterogeneously catalyzed transesterification of rapeseed oil

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Aspects of potassium leaching in the heterogeneously catalyzed transesterification of rapeseed oil
Original language description
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
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
—

Project
<a href="/en/project/GAP106%2F11%2F0773" target="_blank" >GAP106/11/0773: Analysis of the structure/activity relationship of acid-base heterogeneous catalysts in esterification and transesterification reactions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)