Transesterification of soybean frying oil to biodiesel using heterogeneous catalysts

 
This item is provided by the institution :
University of Ioannina
Repository :
Repository of UOI Olympias
see the original item page
in the repository's web site and access all digital files if the item*
share



2009 (EN)
Transesterification of soybean frying oil to biodiesel using heterogeneous catalysts (EN)

Georgogianni, K. G. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Georgogianni, K. G. (EN)

In the present work, the transesterification reaction of soybean frying oil with methanol, in the presence of different heterogeneous catalysts (Mg MCM-41, Mg-Al Hydrotalcite, and K(+) impregnated zirconia), using low frequency ultrasonication (24 KHz) and mechanical stirring (600 rpm) for the production of biodiesel fuel was studied. Selection of catalysts was based on a combination of porosity and surface basicity. Their characterization was carried out using X-ray diffraction, Nitrogen adsorption-desorption porosimetry and scanning electron microscopy (SEM) with energy dispersive spectra (EDS). The activities of the catalysts were related to their basic strength. Mg-Al hydrotalcite showed particularly the highest activity (conversion 97%). It is important to mention that the catalyst activity of ZrO(2) in the transesterification reaction increased as the catalyst was enriched with more potassium cations becoming more basic. Use of ultrasonication significantly accelerated the transesterification reaction compared to the use of mechanical stirring (5 h versus 24 h). (C) 2009 Elsevier B.V. All rights reserved. (EN)

biodiesel (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Fuel Processing Technology (EN)

English

2009

<Go to ISI>://000266155400007

Elsevier (EN)



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)