106654 20240319080946.0 doi 10.1016/j.cattod.2021.04.013 sideral 124565 ART-2022-124565 eng Julian, I. (orcid)0000-0003-3211-0485 From bench scale to pilot plant: A 150x scaled-up configuration of a microwave-driven structured reactor for methane dehydroaromatization 2022 Access copy available to the general public Unrestricted Microwave-assisted gas-phase conversion on structured catalysts is emerging as a promising process intensifi-cation technology in the field of heterogeneous catalysis. The combination of selective heating and structured catalytic materials induces a temperature difference between the heated catalytic sample and the surrounding void regions to avoid non-selective gas-phase reactions. This operational principle allowed inhibiting thermal cracking in alkane dehydrogenation processes as well as retarding catalyst deactivation by coking in methane dehydroaromatization (MDA) processes. However, its effectiveness has not been reported so far out of the lab-oratory scale conditions. This work addresses the scaling of the microwave-assisted MDA process from lab scale experiments to a scaled-up configuration capable of stable operation with a 150-fold higher feeding rate. The scaling-up potential and main obstacles to overcome for this technology are critically discussed. In addition, a techno-economic assessment of the MW-MDA process is presented. The catalytic activity was kept for seven consecutive reaction cycles, i.e. 35 h MW-MDA, prior to a progressive decay due to permanent deactivation caused by zeolite dealumination and active metal loss. The scaled set-up operated for up to 295 consecutive hours under unmanned operation conducting 4 -h MDA-regeneration cycles on Mo/ZSM-5@SiC monoliths and resulting in 125-fold increase of converted methane and a 450-fold increase of benzene (0.17 LC6H6/h) in comparison with the laboratory scale tests. Scaled set-up experiments were run using only a 6-fold microwave input power, thus, highlighting the non-linearity between energy consumption and scaling factor for this tech-nology and the importance of microwave cavity design. info:eu-repo/grantAgreement/EC/H2020/680777/EU/Adaptable Reactors for Resource- and Energy-Efficient Methane Valorisation/ADREM This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 680777-ADREM info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 5.3 2022 CHEMISTRY, APPLIED 14 / 72 = 0.194 2022 Q1 T1 ENGINEERING, CHEMICAL 28 / 141 = 0.199 2022 Q1 T1 CHEMISTRY, PHYSICAL 57 / 161 = 0.354 2022 Q2 T2 1.053 2022 Chemistry (miscellaneous) 2022 Q1 Catalysis 2022 Q2 11.9 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pedersen, C.M. Jensen, A.B. Baden, A.K. Hueso, J.L. Universidad de Zaragoza (orcid)0000-0002-4546-4111 Friderichsen, A.V. Birkedald, H. Mallada, R. Universidad de Zaragoza (orcid)0000-0002-4758-9380 Santamaria, J. Universidad de Zaragoza (orcid)0000-0002-8701-9745 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 383, 1 (2022), 21-30 Catal. today Catalysis Today 0920-5861 5761865 http://zaguan.unizar.es/record/106654/files/texto_completo.pdf Versión publicada 2564704 http://zaguan.unizar.es/record/106654/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:106654 articulos driver 2024-03-18-12:36:02 ARTICLE