A kinetic model of multi-step furfural hydrogenation over a Pd-TiO2 supported activated carbon catalyst

نویسندگان

چکیده

The multi-step, aqueous phase hydrogenation kinetics of furfural (FUR) to furfuryl alcohol (FA), 2-methylfuran (2MF), tetrahydrofurfuryl (THFA) and 5-hydroxy-2-pentanone (5H2P) over Pd-TiO2 on an activated carbon catalyst (derived from a monolith structure) was studied (180 °C, 2.1 MPa). Titanium addition created metal–acid functional promoted 5H2P synthesis furfural. A Langmuir-Hinshelwood model with two active sites (a metal site for steps acid ring opening step) applied fit the kinetic data parameters reaction system were obtained using non-linear regression experimental data. showed acceptable agreement R2 0.93–0.96 concentration residuals (experimental-model) typically ? 5%. Adsorption constants 2MF THFA significantly lower than adsorption other three compounds. rate constant 1.6–1.8 mol/gcat.h consumption predicted by model. Reaction rates 0.2–0.35 mol/gcat.h, 0.1–0.13 0.8–1.0 formation 2-methylfuran, 5-hydroxy-2-pentanone, respectively. External internal mass transfer criterion indicate intrinsic estimated can be used perform monolithic reactor design

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ژورنال

عنوان ژورنال: Chemical Engineering Journal

سال: 2021

ISSN: ['1873-3212', '1385-8947']

DOI: https://doi.org/10.1016/j.cej.2021.128693