TY - JOUR
T1 - In-situ hydrogen generation from 1,2,3,4-tetrahydronaphthalene for catalytic conversion of oleic acid to diesel fuel hydrocarbons
T2 - Parametric studies using Response Surface Methodology approach
AU - Cheah, Kin Wai
AU - Yusup, Suzana
AU - Kyriakou, Georgios
AU - Ameen, Mariam
AU - Taylor, Martin J.
AU - Nowakowski, Daniel J.
AU - Bridgwater, Anthony V.
AU - Uemura, Yoshimitsu
N1 - Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2019/8/2
Y1 - 2019/8/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85048322635&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.05.112
DO - 10.1016/j.ijhydene.2018.05.112
M3 - Article
AN - SCOPUS:85048322635
SN - 0360-3199
VL - 44
SP - 20678
EP - 20689
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 37
ER -