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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F12%3A39895748%21RIV13-GA0-25310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The alkaline-catalyzed ethanolysis of rapeseed oil was studied. In the case of homogeneous catalysis (KOH), the effects of various reaction conditions on the quantity and quality of biodiesel (yield, purity, acid number, carbon residue, free glycerol, potassium content) and the glycerol phase (weight, soaps and ethyl esters content) were studied. The studied reaction conditions were: the reaction temperature and time, the catalyst concentration, the molar ratio of ethanol to oil, the revolutions of stirring, the temperature and time of deethanolisation and the initial temperature of the separation. Data was evaluated by linear regression on the statistical basis of multivariable systems. The final linear models were verified by independent experiments and they are able to predict the biodiesel quantity and quality in the range of the reaction conditions. Finally, the factor analysis of the ester phase variables was carried out. Moreover, ethanolysis was catalyzed by a heterogeneous catalytic system; attention was focused not only on catalyst activity but also on catalyst stability, which was determined by potassium leaching. The alkaline-catalyzed ethanolysis of rapeseed oil was studied. In the case of homogeneous catalysis (KOH), the effects of various reaction conditions on the quantity and quality of biodiesel (yield, purity, acid number, carbon residue, free glycerol, potassium content) and the glycerol phase (weight, soaps and ethyl esters content) were studied. The studied reaction conditions were: the reaction temperature and time, the catalyst concentration, the molar ratio of ethanol to oil, the revolutions of stirring, the temperature and time of deethanolisation and the initial temperature of the separation. Data was evaluated by linear regression on the statistical basis of multivariable systems. The final linear models were verified by independent experiments and they are able to predict the biodiesel quantity and quality in the range of the reaction conditions. Finally, the factor analysis of the ester phase variables was carried out. Moreover, ethanolysis was catalyzed by a heterogeneous catalytic system; attention was focused not only on catalyst activity but also on catalyst stability, which was determined by potassium leaching.
dcterms:title
Ethanolysis of rapeseed oil by KOH as homogeneous and as heterogeneous catalyst supported on alumina and CaO Ethanolysis of rapeseed oil by KOH as homogeneous and as heterogeneous catalyst supported on alumina and CaO
skos:prefLabel
Ethanolysis of rapeseed oil by KOH as homogeneous and as heterogeneous catalyst supported on alumina and CaO Ethanolysis of rapeseed oil by KOH as homogeneous and as heterogeneous catalyst supported on alumina and CaO
skos:notation
RIV/00216275:25310/12:39895748!RIV13-GA0-25310___
n13:predkladatel
n21:orjk%3A25310
n3:aktivita
n20:Z n20:P
n3:aktivity
P(GAP106/11/0773), Z(MSM0021627502)
n3:cisloPeriodika
1
n3:dodaniDat
n6:2013
n3:domaciTvurceVysledku
n4:2621746 n4:1329596 n4:5796237 n4:8740739 n4:3956741
n3:druhVysledku
n7:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
134837
n3:idVysledku
RIV/00216275:25310/12:39895748
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Heterogeneous catalyst; Homogeneous catalyst; Transesterification; Ethyl esters; Biodiesel
n3:klicoveSlovo
n12:Biodiesel n12:Transesterification n12:Ethyl%20esters n12:Heterogeneous%20catalyst n12:Homogeneous%20catalyst
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[CFE1C5494595]
n3:nazevZdroje
Energy
n3:obor
n9:CF
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n16:GAP106%2F11%2F0773
n3:rokUplatneniVysledku
n6:2012
n3:svazekPeriodika
48
n3:tvurceVysledku
Čapek, Libor Černoch, Michal Skopal, František Hájek, Martin Kutálek, Petr
n3:wos
000313461800045
n3:zamer
n15:MSM0021627502
s:issn
0360-5442
s:numberOfPages
6
n11:doi
10.1016/j.energy.2012.06.052
n17:organizacniJednotka
25310