The influence of Ru and Re admixtures on the size of Co particles in Co/SiO2 catalysts of the fischer-tropsch synthesis |
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| Authors: | G V Pankina P A Chernavskii A Yu Khodakov G-S Girardon V V Lunin |
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| Institution: | (1) Faculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119899, Russia;(2) Universite des Sciences et Technologie de Lille, 59655 Villeneuve d’Ascq, France |
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| Abstract: | The promotion of Co/SiO2 catalysts with noble metals such as Ru and Re substantially decreased the mean size of Co particles and increased the fraction of superparamagnetic particles. The Langevin function was used to approximate the magnetic field dependence of magnetization. This allowed the size of Co nanoparticles to be estimated. A decrease in the temperature of the reduction of Co/SiO2 in the presence of Ru and Re decreased the probability of the encapsulation of Co particles in carrier pores. |
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