In-situ hydrogen generation from 1,2,3,4-tetrahydronaphthalene for catalytic conversion of oleic acid to diesel fuel hydrocarbons:Parametric studies using Response Surface Methodology approach

Cheah, Kin Wai, Yusup, Suzana, Kyriakou, Georgios, Ameen, Mariam, Taylor, Martin, Nowakowski, Daniel J, Bridgwater, Anthony V and Uemura, Yoshimitsu (2018). In-situ hydrogen generation from 1,2,3,4-tetrahydronaphthalene for catalytic conversion of oleic acid to diesel fuel hydrocarbons:Parametric studies using Response Surface Methodology approach. International Journal of Hydrogen Energy ,

Abstract

This work reported a new strategy in producing synthetic diesel hydrocarbons from a mono-unsaturated fatty acid model compound, oleic acid and replacing high pressure molecular hydrogen with a hydrogen-rich donor solvent, 1,2,3,4–tetrahydronaphthalene for the first time. Under the absence of an external H2 supply, oleic acid was dispersed in 1,2,3,4-tetrahydronaphthalene and hydrotreated over commercially available 5 wt% Pd/C in a fed-batch reactor to obtain diesel range fuel products. A maximum oleic acid conversion of 92.4% and highest diesel hydrocarbon selectivity of 67.4% were achieved at 330 °C with a solvent to fatty acid mass ratio of 1 for 3 h under autogenous pressure. In-situ H2 produced from 1,2,3,4-tetrahydronaphthalene operated as an effective hydrogen donor vehicle that continuously transported active hydrogen species from gas phase to reactant acid molecules and radical fragments. It minimized polymerization of reaction intermediate and suppressed coke formation, which subsequently improved catalyst resistance toward deactivation.

Publication DOI: https://doi.org/10.1016/j.ijhydene.2018.05.112
Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Engineering & Applied Sciences > Chemical engineering & applied chemistry
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: Diesel hydrocarbons,Oleic acid,1,2,3,4-tetrahydronaphthalene,In-situ hydrogen,Catalytic deoxygenation
Full Text Link:
Related URLs: https://www.sci ... 360319918316574 (Publisher URL)
Published Online Date: 2018-06-19
Authors: Cheah, Kin Wai
Yusup, Suzana
Kyriakou, Georgios
Ameen, Mariam
Taylor, Martin
Nowakowski, Daniel J
Bridgwater, Anthony V ( 0000-0001-7362-6205)
Uemura, Yoshimitsu

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