Study of the Structure of Cobalt-Containing Catalysts Synthesized under Subcritical Conditionsстатья

Информация о цитировании статьи получена из Scopus, Web of Science
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Дата последнего поиска статьи во внешних источниках: 13 ноября 2019 г.

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[1] Study of the structure of cobalt-containing catalysts synthesized under subcritical conditions / M. E. Markova, A. V. Gavrilenko, A. A. Stepacheva et al. // Kinetics and Catalysis. — 2019. — Vol. 60, no. 5. — P. 618–626. A physicochemical study of cobalt-containing (10 wt %) silica-supported Fischer–Tropsch catalysts was carried out. The catalysts were obtained under subcritical conditions (T = 200oC, P = 8 MPa) using water (Tc = 374.1oC, Pc = 22.1 MPa) and propanol-2 (Tc = 235.6oC, Pc = 5.8 MPa). The obtained samples were compared with a 10 wt % Co/SiO2 catalyst prepared by incipient-wetness impregnation. Comparison of the properties of catalysts in the liquid-phase Fischer–Tropsch synthesis showed that the sample prepared in subcritical water was the most active and selective to aliphatic C6–C7 hydrocarbons. This sample is characterized by a high surface area (131.7 m2/g), a uniform distribution of particles in the active phase with an average size of 5 nm and higher accessibility of cobalt species for reagents. According to XPS data, the composition of catalyst active phase is mainly represented by two compounds: Co(OH)2 and Co3O4. [ DOI ]

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