About: Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effects of phase separation temperatures (5-90 degrees C) on losses of higher fatty acid (C-16 and C-18) ethyl esters in the glycerol phase were investigated. Losses of ethyl esters produced from ethanolysis of rapeseed oil were 30-60% higher when NaOH rather than KOH was used as homogeneous catalyst. The losses decreased with an increase in separation temperature, resulting in an increase in the yield of the ester phase. The concentration of impurities (e.g. alkali metals, free glycerol and glycerides) in the ester phase increased with increasing separation temperature due reversible transesterification and reciprocal solubility of the compounds. Carbonates formed during neutralization of the catalysts are also transesterification catalysts and they cause reverse reaction. The ethyl ester bound in the glycerol phase during NaOH-mediated catalysis can be extracted by heating the separated glycerol phase to 60-90 degrees C. The ester yield is increasing with increasing separation temperature, however with decreasing quality. The effects of phase separation temperatures (5-90 degrees C) on losses of higher fatty acid (C-16 and C-18) ethyl esters in the glycerol phase were investigated. Losses of ethyl esters produced from ethanolysis of rapeseed oil were 30-60% higher when NaOH rather than KOH was used as homogeneous catalyst. The losses decreased with an increase in separation temperature, resulting in an increase in the yield of the ester phase. The concentration of impurities (e.g. alkali metals, free glycerol and glycerides) in the ester phase increased with increasing separation temperature due reversible transesterification and reciprocal solubility of the compounds. Carbonates formed during neutralization of the catalysts are also transesterification catalysts and they cause reverse reaction. The ethyl ester bound in the glycerol phase during NaOH-mediated catalysis can be extracted by heating the separated glycerol phase to 60-90 degrees C. The ester yield is increasing with increasing separation temperature, however with decreasing quality. (en)
Title	Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts (en)
skos:prefLabel	Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts Effect of phase separation temperature on ester yields from ethanolysis of rapeseed oil in the presence of NaOH and KOH as catalysts (en)
skos:notation	RIV/00216275:25310/12:39895250!RIV13-GA0-25310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP106/11/0773), Z(MSM0021627502)
http://linked.open...iv/cisloPeriodika	April
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Hájek, Martin Skopal, František Černoch, Michal
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	133187
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/12:39895250
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	separation; homogeneous catalyst; ethyl ester; transesterification; biodiesel (en)
http://linked.open.../riv/klicoveSlovo	biodiesel separation transesterification ethyl ester homogeneous catalyst
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[1CD58BB4A204]
http://linked.open...i/riv/nazevZdroje	Bioresource Technology
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Analysis of the structure/activity relationship of acid-base heterogeneous catalysts in esterification and transesterification reactions
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	110
http://linked.open...iv/tvurceVysledku	Hájek, Martin Skopal, František Černoch, Michal
http://linked.open...ain/vavai/riv/wos	000305852700041
http://linked.open...n/vavai/riv/zamer	Pokročilé analytické a separační metody a jejich aplikace v diagnostice a technologii živých a neživých materiálů
issn	0960-8524
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.biortech.2012.01.143
http://localhost/t...ganizacniJednotka	25310

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 48 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software