Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F14%3A39898173" target="_blank" >RIV/00216275:25310/14:39898173 - isvavai.cz</a>
Alternative codes found
RIV/62243136:_____/14:GACR11CL
Result on the web
<a href="http://dx.doi.org/10.1016/S1872-2067(14)60054-1" target="_blank" >http://dx.doi.org/10.1016/S1872-2067(14)60054-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/S1872-2067(14)60054-1" target="_blank" >10.1016/S1872-2067(14)60054-1</a>

Result language
angličtina
Original language name
Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors
Original language description
Catalytically active, stable, and mechanically durable solid K/Al2O3 catalysts for the transesterification of rapeseed oil with methanol 1,was studied. In a batch reactor, high catalytic activity was accompanied by leaching of K species, caused by glycerol, and mechanical destruction of the solid catalyst as a result of contact with the stirrer. In a fixed-bed reactor, some leaching of K species into the liquid phases was also observed, but approached 0 during 30 h of time-on-stream; the activity of theK/Al2O3 catalyst (similar to 83% ester yield) was stable for 100 h of time-on-stream and no mechanical destruction of the catalyst was observed. The populations of K2O and K-O-Al species for fresh and used K/Al2O3 catalysts were compared using Fourier transform infrared spectroscopy. It was found that some K2O species leached into the liquid phases at the beginning of the reaction.
Czech name
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Czech description
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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
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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

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