Direct hydrodeoxygenation of algal lipids extracted from Chlorella alga

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Hoang SH Nguyen, Päivi Mäki-Arvela, Uliana Akhmetzyanova, Zdeněk Tišler, Imane Hachemi, Andre Rudnäs, Annika Smeds, Kari Eränen, Atte Aho, Narendra Kumar, Jarl Hemming, Markus Peurla, Dmitry Yu Murzin
Publication year: 2017
Journal: Journal of Chemical Technology and Biotechnology
Volume number: 92
Issue number: 4
Start page: 741
End page: 748
eISSN: 1097-4660


Abstract

BACKGROUND
Hydrodeoxygenation (HDO) of Chlorella algal oil extracted with supercritical hexane and stearic acid as a model compound was investigated over several supported Ni and Mo2N–MoO2 catalysts in a semibatch reactor at 300 °C under 30 bar in the presence of hydrogen.

RESULTS
The results showed that all catalysts were very active in HDO of stearic acid. With crude algal oil, a maximum conversion of lipids of 35% was found with an acidic Ni-HY-80 zeolite catalyst after 360 min. The main products in algal oil HDO were fatty acids; whereas maximally only 7% hydrocarbons were formed with Ni-HY-80. The main hydrocarbon products were formed via decarbonylation, as the hydrogenation/dehydration route was suppressed.

CONCLUSIONS
Hydrodeoxygenation of crude Chlorella algal oil was demonstrated over nickel supported on beta zeolite and with a molybdenum oxide–nitride catalyst. Strong catalyst deactivation occurred for the former catalyst, whereas the latter retained its activity.


Keywords

Chemical Engineering

Last updated on 2019-14-10 at 05:43