Monolithic Stirrer Reactors for the Sustainable Production of Dihydroxybenzenes over 3D Printed Fe/?-Al2O3 Monoliths: Kinetic Modeling and CFD Simulation

نویسندگان

چکیده

The aim of this work is to evaluate the performance stirring 3D Fe/Al2O3 monolithic reactor in batch operation applied liquid-phase hydroxylation phenol by hydrogen peroxide (H2O2). An experimental and numerical investigation was carried out at following operating conditions: CPHENOL,0 = 0.33 M, CH2O2,0 T 75–95 °C, P 1 atm, ? 200–500 rpm WCAT ~ 1.1 g. kinetic model described consumption H2O2 a zero-order power-law equation, while catechol hydroquinone production Eley–Rideal model; rate determining step reaction between adsorbed H2O2, solution with two active sites involved. CFD model, coupling conservation mass, momentum species together equations, experimentally validated. It demonstrated laminar flow characterized presence an annular zone located inside surrounding monoliths (u 40–80 mm s?1) central vortex very low velocities 3.5–8 s?1). simulation study showed increasing selectivity dihydroxybenzenes temperature, initial concentration mainly affects conversion.

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ژورنال

عنوان ژورنال: Catalysts

سال: 2022

ISSN: ['2073-4344']

DOI: https://doi.org/10.3390/catal12020112