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Hydrodeoxygenation of Oleic Acid on Supported and Unsupported MoS2 and NiMoS2 Catalysts for the Production of Green Diesel Fuel.
- Source :
- Chemistry & Technology of Fuels & Oils; Jan2019, Vol. 54 Issue 6, p686-697, 12p
- Publication Year :
- 2019
-
Abstract
- MoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> and NiMoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> catalysts were prepared by incipient wetness impregnation of alumina using aqueous solutions of 12-molybdophosphoric heteropolyacid and nickel citrate. Unsupported catalysts were prepared by etching a support made from MoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> using hydrofluoric acid (Et-MoS<subscript>2</subscript>) and thermal decomposition of aluminum tetrathiomolybdate (Ref-MoS<subscript>2</subscript>). The activity of the catalysts in hydrodeoxygenation decreases in the series NiMoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> = Et-MoS<subscript>2</subscript> > MoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> > Ref-NiS<subscript>2</subscript>. On the other hand, the selectivity relative hydrogenation of oleic acid has a different order: Et-MoS<subscript>2</subscript> > MoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> > Ref-MoS<subscript>2</subscript> > NiMoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript>. The unsupported Et-MoS<subscript>2</subscript> catalyst has similar activity to NiMoS<subscript>2</subscript>/Al<subscript>2</subscript>O<subscript>3</subscript> in hydrodeoxygenation and the highest selectivity, which indicates virtually completion of the hydrodeoxygenation reaction through a hydrogenation pathway without the formation of CO or CO<subscript>2</subscript>. These gases display strong inhibiting properties and have a detrimental eject on the environment. [ABSTRACT FROM AUTHOR]
- Subjects :
- GREEN diesel fuels
OLEIC acid
CATALYSTS
HYDROFLUORIC acid
AQUEOUS solutions
Subjects
Details
- Language :
- English
- ISSN :
- 00093092
- Volume :
- 54
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Chemistry & Technology of Fuels & Oils
- Publication Type :
- Academic Journal
- Accession number :
- 135996823
- Full Text :
- https://doi.org/10.1007/s10553-019-00976-z