Direct hydrodeoxygenation of algal lipids extracted from Chlorella alga. Issue 4 (23rd January 2017)

• Record Type: Journal Article
• Authors: Nguyen, Hoang SH; Mäki‐Arvela, Päivi; Akhmetzyanova, Uliana; Tišler, Zdeněk; Hachemi, Imane; Rudnäs, Andre; Smeds, Annika; Eränen, Kari; Aho, Atte; Kumar, Narendra; Hemming, Jarl; Peurla, Markus; Murzin, Dmitry Yu
• Is Part Of: Journal of chemical technology & biotechnology. Volume 92:Issue 4(2017)
• Page Start: 741
• Page End: 748
• Publication Date: 2017-01-23
• Subjects: algal oil -- hydrodeoxygenation -- molybdenum; Biotechnology -- Periodicals; Chemistry, Technical -- Periodicals; Chemical engineering -- Periodicals; Industries -- Environmental aspects -- Periodicals; 660
• DOI: 10.1002/jctb.5158
• Languages: English
• ISSNs: 0268-2575

Abstract

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 Mo2 N–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. © 2016 Society of Chemical Industry