Print Email Facebook Twitter Can bi-functional nickel modified 13X and 5A zeolite catalysts for CO2 methanation be improved by introducing ruthenium? Title Can bi-functional nickel modified 13X and 5A zeolite catalysts for CO2 methanation be improved by introducing ruthenium? Author Wei, L. (TU Delft Large Scale Energy Storage) Kumar, Narendra (Åbo Akademi University) Haije, W.G. (TU Delft Large Scale Energy Storage) Peltonen, Janne (University of Turku) Peurla, Markus (University of Turku) Grenman, L.O.H. (Åbo Akademi University) de Jong, W. (TU Delft Large Scale Energy Storage) Date 2020 Abstract Zeolites 13X and 5A were modified with nickel and/or ruthenium for CO2 methanation. The catalysts were prepared by evaporation impregnation and XRD, SEM-EDX, TEM, STEM-EDX, nitrogen physisorption, H2-TPR and NH3-TPD were used to characterize the physico-chemical properties of the catalysts. The physico-chemical characterization results show that the zeolites structure did not change after the Ni, Ru modification, however. Ni was able to enter the pores of 13X, in the other case, 5A, an egg shell type structure was formed. Methanation experiments were performed in a lab scale fixed bed reactor system, the results showed that the mono-metallic catalysts out-performed the bi-metallic ones with Ni being the more active. One of the factors influencing the performance of the bi-metallic catalysts was the difficulty to obtain good dispersion when both metals were used. Also the morphology of the catalyst significantly influenced the selectivity. The catalysts with lower weak acidity benefit for getting a higher activity. The single metal catalysts 2.5 %Ru13X and 5%Ni13X showed good catalytic stability with around 97 % CH4 selectivity at 360 °C, with no catalyst deactivation during the 200 h catalyst stability test. Subject 13X and 5A zeolite catalystsCO methanationNi and Ru To reference this document use: http://resolver.tudelft.nl/uuid:c50fba8d-29d1-49aa-9a00-3bd40c8d232a DOI https://doi.org/10.1016/j.mcat.2020.111115 Embargo date 2021-01-28 ISSN 2468-8231 Source Molecular Catalysis, 494 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2020 L. Wei, Narendra Kumar, W.G. Haije, Janne Peltonen, Markus Peurla, L.O.H. Grenman, W. de Jong Files PDF 1_s2.0_S2468823120303783_main.pdf 9.22 MB Close viewer /islandora/object/uuid:c50fba8d-29d1-49aa-9a00-3bd40c8d232a/datastream/OBJ/view