Enhanced fluid dynamics in 3D monolithic reactors to improve the chemical performance: experimental and numerical investigation
EntityUAM. Departamento de Ingeniería Química
PublisherAmerican Chemical Society
10.1021/acs.iecr.1c03098Industrial and Engineering Chemistry Research (IECRED) 60.41 (2021): 14701-14712
ISSN0888-5885 (print); 1520-5045 (online)
Funded byThe authors thank the financial support by the Community of Madrid through the project S2018/EMT-4341 and the Government of Spain through the projects: PGC2018- 095642-B-I00 and RTI2018-095052-B-I00 (MCIU/AEI/ FEDER, UE). Also, G. Vega acknowledges the Universidad Autónoma de Madrid for the predoctoral contract
ProjectComunidad de Madrid. S2018/EMT-4341; Gobierno de España. RTI2018-095052-B-I00; Gobierno de España. PGC2018-095642-B-I00
SubjectsMonolithic Reactors; Fluid Dynamics; RAD; TRG; CFD; Química
Rights© 2021 American Chemical Society
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
Three-dimensional (3D) Fe/SiC monoliths with parallel interconnected channels and different cell geometries (square, troncoconical, and triangular) were manufactured by robocasting and used as catalytic reactors in hydroxylation of phenol using hydrogen peroxide to produce dihydroxybenzenes; the reaction was performed at Cphenol,0 = 0.33 M, Cphenol,0:CH2O2,0 = 1:1 M, WR = 3.7 g, T = 80-90 °C, and τ = 0-254 gcat·h·L-1 with water as a solvent. The values of the apparent kinetic rate constants demonstrated the superior performance of the triangular cell monoliths for hydrogen peroxide decomposition, phenol hydroxylation, and dihydroxybenzene production reactions. A computational fluid dynamic model was validated with the experimental results. It demonstrated that the triangular cell monoliths, with a lower channel hydraulic diameter and not-facing interconnections, provided a higher internal macrotortuosity that induced an oscillating flow of the liquid phase inside the channels, leading to an additional transverse flow between adjacent parallel channels. This behavior, not observed in the other two geometries, resulted in a better overall performance
Google Scholar:Quintanilla Gómez, María Asunción - Vega, Gonzalo - Lopez, Pablo - Garcia, Francesca - Madurga, Enrique - Belmonte, Manuel - Casas de Pedro, José Antonio
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