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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Wood, Joseph
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Anisole hydrodeoxygenation over nickel-based catalystscitations
- 20213D printed re-entrant cavity resonator for complex permittivity measurement of crude oilscitations
- 2020Mild-temperature hydrodeoxygenation of vanillin a typical bio-oil model compound to creosol a potential future biofuelcitations
- 2020Maximizing paraffin to olefin ratio employing simulated nitrogen-rich syngas via Fischer-Tropsch process over Co3O4/SiO2 catalystscitations
- 2020Tetralin and decalin h-donor effect on catalytic upgrading of heavy oil inductively heated with steel ballscitations
- 2020Organocatalysis for versatile polymer degradationcitations
- 2019Poly(lactic acid) degradation into methyl lactate catalyzed by a well-defined Zn(II) complexcitations
- 2019Reaction kinetics of vanillin hydrodeoxygenation in acidic and nonacidic environments using bimetallic PdRh/Al2O3 catalystcitations
- 2019A mechanistic study of Layered-Double Hydroxide (LDH)-derived nickel-enriched mixed oxide (Ni-MMO) in ultradispersed catalytic pyrolysis of heavy oil and related petroleum coke formationcitations
- 2018Catalytic performance of Ni-Cu/Al2O3 for effective syngas production by methanol steam reformingcitations
- 2017In-situ catalytic upgrading of heavy oil using dispersed bionanoparticles supported on gram-positive and gram-negative bacteriacitations
- 2016Selective hydrogenation using palladium bioinorganic catalystcitations
- 2011Improving the interpretation of mercury porosimetry data using computerised X-ray tomography and mean-field DFTcitations
- 2008Experimental and modelling studies of the kinetics of mercury retraction from highly confined geometries during porosimetry in the transport and the quasi-equilibrium regimescitations
- 2006Studies of the entrapment of non-wetting fluid within nanoporous media using a synergistic combination of MRI and micro-computed X-ray tomographycitations
- 2005Minimisation and recycling of spent acid wastes from galvanising plantscitations
Places of action
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article
Reaction kinetics of vanillin hydrodeoxygenation in acidic and nonacidic environments using bimetallic PdRh/Al2O3 catalyst
Abstract
The kinetics of hydrodeoxygenation (HDO) reaction in literature are mostly reported for single model compounds in bio-oil. However, these kinetic models may become invalid in the real bio-oil environment where other model compounds are present. This study investigates the effect of acetic acid, which is a major compound in bio-oil, on the liquid-phase HDO reaction kinetics of vanillin (VL). A synthesized bimetallic catalyst (PdRh/Al<sub>2</sub>O<sub>3</sub>) was utilized in a batch reactor at 308–328 K, 1–4 MPa H<sub>2</sub> gas partial pressure (<i>P</i><sub>H</sub>), 263–526 mM initial VL concentration (C<sub>VL0</sub>), and 1.9–4.6 kg/m<sup>3</sup> catalyst loading with ethyl acetate as the reaction solvent. N<sub>2</sub> adsorption–desorption, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence (XRF), CO chemisorption, and mercury porosimetry methods were used to determine the physicochemical properties of the catalyst. Transport limitations in the system were ruled out via the Madon–Boudart test, Weisz–Prater criterion, agitation, and particle size test. In vanillin-only and vanillin–acetic acid environments, nonfirst-order dependence on <i>P</i><sub>H</sub> and C<sub>VL0</sub> was found. Notably, lower reaction rates were observed in the presence of acetic acid compared to vanillin-only environment. Kinetic data for the vanillin-only and vanillin–acetic acid environments were successfully modeled using derived expressions from Langmuir–Hinshelwood–Hougen–Watson approach under the assumption of competitive dissociative hydrogen adsorption. The estimated activation energy for VL HDO reaction was 24.1 kJ/mol in vanillin-only environment and 51.0 kJ/mol in the presence of acetic acid.