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Open AccessArticle

The Catalytic Performance of Ni-Co/Beta Zeolite Catalysts in Fischer-Tropsch Synthesis

1
Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
2
Laboratoire de Réactivité de Surface, Sorbonne Université-CNRS, UMR 7197, 4 Place Jussieu, Case 178, F-75252 Paris, France
3
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
4
Łukasiewicz Research Network—Institute of Leather Industry, Products, Processes and Environment Laboratory, Laboratory of Environment, Zgierska 73, 91-462 Łódź, Poland
*
Authors to whom correspondence should be addressed.
Catalysts 2020, 10(1), 112; https://doi.org/10.3390/catal10010112
Received: 6 December 2019 / Revised: 6 January 2020 / Accepted: 8 January 2020 / Published: 13 January 2020
The influence of nickel introduction on the catalytic performance of cobalt micro- and mesoporous Beta zeolite catalysts in Fischer–Tropsch Synthesis was studied. Catalysts containing 3 wt% of nickel and 10 wt% of cobalt were prepared by co-impregnation and sequential impregnation and comprehensively characterized by XRD, XPS, NH3-TPD, TPR-H2 and TEM EDX techniques. Neither the dealumination of Beta zeolite nor the incorporation of Co and Ni affected its structure, as shown by XRD and BET investigations. The presence of nickel results in the decrease in the temperature of the cobalt oxide reduction, evidenced by TPR-H2 and the increase of CO conversion. Among all the tested catalysts, the best catalytic properties in FTS showed that based on microporous dealuminated zeolites with a very high CO conversion, near 100%, and selectivity to liquid products of about 75%. In case of dealuminated samples, the presence of Ni decreased the selectivity to liquid products. All catalysts under study showed high resistance to deactivation during the whole time of synthesis (24 h). The very high stability of nickel-cobalt based Beta catalysts was probably due to the hydrogen spillover from metallic nickel particles to cobalt oxides, which decreased re-oxidation of the active phase, sintering and the creation of the carbon on the catalyst surface. Moreover, the presence of Ni on the surface of cobalt-based Beta catalysts could obstruct the formation of graphitic carbon and, in consequence, delay the deactivation of the catalyst. View Full-Text
Keywords: nickel; cobalt; Beta zeolites; Fischer–Tropsch synthesis nickel; cobalt; Beta zeolites; Fischer–Tropsch synthesis
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Sadek, R.; Chalupka, K.A.; Mierczynski, P.; Maniukiewicz, W.; Rynkowski, J.; Gurgul, J.; Lasoń-Rydel, M.; Casale, S.; Brouri, D.; Dzwigaj, S. The Catalytic Performance of Ni-Co/Beta Zeolite Catalysts in Fischer-Tropsch Synthesis. Catalysts 2020, 10, 112.

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