The dehydrogenation of isopropanol on a nickel-manganese catalyst subjected to treatment in glow-discharge oxygen,argon, and hydrogen plasmas |
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Authors: | V. D. Yagodovskii K. V. Bozhenko T. V. Yagodovskaya A. A. Trofimova I. A. Malyshkina E. P. Chainikov |
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Affiliation: | (1) Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow, 117198, Russia;(2) Faculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119992, Russia |
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Abstract: | The dependence of the activity of the (Ni 20 wt %-Mn 4 wt %)/SiO2 catalyst on the treatment of its surface in glow-discharge oxygen, argon, and hydrogen plasmas was studied. Catalytic experiments were performed in a flow reactor and under static conditions in a vacuum. The highest activity was observed after catalyst treatment in an argon plasma. Glow-discharge plasma treatment changed the structure and number of active centers, which resulted in a change in the reaction mechanism. Ab initio quantum-chemical calculations were performed using the Hartree-Fock (UHF) method for the Ni5 cluster. The results substantiated the suggested that the active center contained the hydrogen atom. |
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