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The dynamics of the reaction between Co3O4/SiO2 and synthesis gas in a magnetic field
P A Chernavskii1, A N Kharlanov1, B S Lunin1
1Department of Chemistry Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow 119991, Russia. Chern5@inbox.ru.
Abstract:
The reaction of a Co3O4/SiO2 catalyst with synthesis gas (CO : H2 = 1 : 1) was studied using in situ magnetometry in programmable temperature and isothermal modes. Changes in magnetic induction and the formation rate of CO2 were used to monitor the dynamics of the reaction. Then, a simple kinetic model was used to estimate the rate ratios of the following reactions: Co3O4 + CO → CoO + CO2 and CoO + CO → Co + CO2. The effect is observed both in the synthesis gas and in pure CO. It was demonstrated that an external magnetic field exerts a multidirectional influence on the rates of these reactions. As the magnetic field strength increases, the rate of the first reaction decreases, while that of the second increases. This suggests that the process is spin-dependent.
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