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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, K.W. and Yusup, S. and Kyriakou, G. and Ameen, M. and Taylor, M.J. and Nowakowski, D.J. and Bridgwater, A.V. and Uemura, Y. (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 .

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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. © 2018 Hydrogen Energy Publications LLC

Item Type:Article
Impact Factor:cited By 0; Article in Press
Uncontrolled Keywords:Batch reactors; Diesel fuels; Hydrocarbons; Hydrogen production; Reaction intermediates; Unsaturated fatty acids, 1,2,3,4-tetrahydronaphthalene; Autogenous pressure; Catalytic conversion; Deoxygenations; Molecular hydrogen; Response surface methodology; Situ hydrogens; Tetrahydronaphthalenes, Oleic acid
Departments / MOR / COE:Research Institutes > Institute for Sustainable Building
ID Code:21947
Deposited By: Ahmad Suhairi
Deposited On:01 Aug 2018 01:12
Last Modified:23 Oct 2018 00:58

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