Merkouri, Loukia PantzechroulaBobadilla Baladrón, Luis FranciscoMartín Espejo, Juan LuisOdriozola Gordón, José AntonioPenkova, Anna DimitrovaTorres Sempere, GuillermoRamírez Reina, TomásShort, MichaelDuyar, Melis S.2025-06-042025-06-042025-02Merkouri, L.P., Bobadilla Baladrón, L.F., Martín Espejo, J.L., Odriozola Gordón, J.A., Penkova, A.D., Torres Sempere, G.,...,Duyar, M.S. (2025). Integrated CO2 capture and dynamic catalysis for CO2 recycling in a microbrewery. Applied Catalysis B-Environmental, 361, 124610. https://doi.org/10.1016/j.apcatb.2024.124610.1873-38830926-3373https://hdl.handle.net/11441/173938In this study, we used fermentation off-gases from a brewery for integrated CO2 capture and utilisation in order to produce CH4 with a dual-function material (DFM) containing NiRu as catalyst and dispersed CaO as adsorbent. CH4 was produced from captured CO2 via 2 pathways (fast and slow), proceeding through formyl intermediates according to the operando DRIFTS-MS results. The NiRuCa DFM showed a stable CH4 capacity over 8 cycles (105 μmol/gDFM) with fermentation off-gases being used as a CO2 capture feed. H2O and O2, which were present in small amounts in the emissions feed, resulted in the passivation of Ni in the form of a NiO layer and hence, the DFM did not undergo excessive oxidation and deactivation. This work constitutes a first in terms of validating the use of DFMs with real industrial emissions, and it directly correlates the DFM activity performance with its reaction mechanism and intermediate species.application/pdf15engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Industrial decarbonisationDual-function materialCO2 methanationSynthetic natural gas CO2 capture and utilisationFermentationBreweryTime-resolved operando DRIFTS-MSinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1016/j.apcatb.2024.124610