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Production of liquid fuel from palmitic acid over nanocrystalline CeO2-based catalysts with minimal use of H2
Author(s)
Dararat, Chalinee
Kulrat, Teerapong
Soontontaweesub, Surachet
Anothaiwalaikul, Thitima
Bunprechawong, Piyawadee
Chanda, Rawipot
Kanchanawarin, Jarin
Kidkhunthod, Pinit
Date Issued
January 1, 2017
Type
Article
Abstract
The deoxygenation of palmitic acid into diesel-range hydrocarbons can be promoted over nanocrystalline ceria-based catalysts under atmospheric N2 or 10% H2/N2 in a fixed-bed flow reactor at 400 °C. Oxygen vacancy sites are active for ketonization of palmitic acid to C31 ketone and also subsequent cracking of the formed ketone to hydrocarbons. The 22–31% selectivity of C9 to C17 liquid hydrocarbons can be achieved at 100% palmitic acid conversion. The deoxygenation under N2 can be facilitated, presumably by hydrogen transfer from coke precursors. Catalytic activity of ceria-based catalysts can be tuned by pretreatment conditions, type of a carrier gas, or lattice modification.
Citation
Catalysis Communications, 102, 123-126, 2017