dc.contributor.author | Vega, Gonzalo | |
dc.contributor.author | López, Pablo | |
dc.contributor.author | Belmonte, Manuel | |
dc.contributor.author | Casas, Jose A. | |
dc.contributor.author | Quintanilla Gómez, María Asunción | |
dc.contributor.other | UAM. Departamento de Ingeniería Química | es_ES |
dc.date.accessioned | 2023-01-18T09:00:00Z | |
dc.date.available | 2023-01-18T09:00:00Z | |
dc.date.issued | 2022-08-08 | |
dc.identifier.citation | Industrial & Engineering Chemistry Research 61.32 (2022): 11678−11690 | en_US |
dc.identifier.issn | 0888-5885 (print) | en_US |
dc.identifier.issn | 1520-5045 (online) | en_US |
dc.identifier.uri | http://hdl.handle.net/10486/705922 | |
dc.description.abstract | The application of structured reactors provides a number of advantages in chemical processes. In this paper, two
different three-dimensional (3D) Fe/SiC catalysts with a square cell geometry have been manufactured by Robocasting: monoliths
(D = 14 and H = 15 mm) and meshes (D = 24 and H = 2 mm) and studied in the catalytic phenol oxidation by hydrogen peroxide
(H2O2) for the sustainable production of dihydroxybenzenes (DHBZ). The fluid dynamics, catalytic performance, reaction rates,
external mass transport limitation, and catalyst stability have been compared in three different reactors, monolithic fixed-bed reactor,
multimesh fixed-bed reactor, and monolithic stirrer reactor, at selected operating conditions. The results show that the mechanical
stirring of the 3D Fe/SiC monoliths avoids the external mass transfer limitation caused by the presence of oxygen bubbles in the
channels (produced from the HOx· species in autoscavenging radical reactions). In addition, the backmixing has a positive effect on
the efficient consumption of H2O2 but an adverse effect on the phenol selectivity to DHBZ since they are overoxidized to tar
products at longer contact times. On the other hand, the wall porosity, and not the backmixing, affects the susceptibility of the 3D
Fe/SiC catalyst to the Fe leaching, as occurs in the mesh structures. In conclusion, the monoliths operating under plug-flow and
external mass transfer limitation in the monolithic fixed-bed reactor (MFB) provide an outstanding phenol selectivity to DHBZ and
catalyst stability | en_US |
dc.description.sponsorship | This work is supported by the following agencies and grants: the
Spanish Government under projects RTI2018-095052-BI00
(MICINN/AEI/FEDER, UE) and EIN2020-112153
(MCINN/AEI/10.13039/501100011033), the latter was also
supported by the European Union through “NextGenerationEU/PRTR”, Community of Madrid under project S2018/
EMT-4341, and CSIC project I-COOP+ 2019 (ref
COOPB20405). P.L. acknowledges the Community of Madrid
and the European Social Fund for the financial support received
through the contract PEJ-2019-AI/IND-14385. The authors
thank Juliana Mejía for her technical assistance | en_US |
dc.format.extent | 13 pag. | es_ES |
dc.format.mimetype | application/pdf | en_US |
dc.language.iso | eng | en |
dc.publisher | American Chemical Society | en_US |
dc.relation.ispartof | Industrial and Engineering Chemistry Research | en_US |
dc.rights | © 2022 American Chemical Society | en_US |
dc.title | Structured reactors based on 3D Fe/SiC Catalysts: understanding the effects of mixing | en_US |
dc.type | article | en_US |
dc.subject.eciencia | Química | es_ES |
dc.relation.publisherversion | https://doi.org/10.1021/acs.iecr.2c01611 | en_US |
dc.identifier.doi | 10.1021/acs.iecr.2c01611 | en_US |
dc.identifier.publicationfirstpage | 11678 | es_ES |
dc.identifier.publicationissue | 32 | es_ES |
dc.identifier.publicationlastpage | 11690 | es_ES |
dc.identifier.publicationvolume | 61 | es_ES |
dc.relation.projectID | Gobierno de España. RTI2018-095052-BI00 | es_ES |
dc.relation.projectID | Gobierno de España. AEI/10.13039/501100011033 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | en_US |
dc.rights.cc | Reconocimiento | es_ES |
dc.rights.accessRights | openAccess | en_US |
dc.facultadUAM | Facultad de Ciencias | es_ES |