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


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:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Uncontrolled Keywords: 1,2,3,4-tetrahydronaphthalene,Catalytic deoxygenation,Diesel hydrocarbons,In-situ hydrogen,Oleic acid,Renewable Energy, Sustainability and the Environment,Fuel Technology,Condensed Matter Physics,Energy Engineering and Power Technology
Publication ISSN: 1879-3487
Last Modified: 13 Jun 2024 07:14
Date Deposited: 19 Jun 2018 10:40
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Related URLs: https://www.sci ... 360319918316574 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2019-08-02
Published Online Date: 2018-06-19
Accepted Date: 2018-05-19
Authors: Cheah, Kin Wai
Yusup, Suzana
Kyriakou, Georgios
Ameen, Mariam
Taylor, Martin
Nowakowski, Daniel J (ORCID Profile 0000-0001-8056-5316)
Bridgwater, Anthony V (ORCID Profile 0000-0001-7362-6205)
Uemura, Yoshimitsu

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