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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/62243136:_____/14:GACR11CL

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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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)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chinese Journal of Catalysis

ISSN

0253-9837

e-ISSN

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Svazek periodika

35

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

7

Strana od-do

1084-1090

Kód UT WoS článku

000338913700015

EID výsledku v databázi Scopus

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