Abstract
1. A gamma-resonance spectroscopic study has been made of systems obtained by impregnating molybdenum disulfide samples with solutions of57Fe(NO3)3·9H2O in different solvents (formamide, acetone, water) and subsequently sulfidizing them. After a catalyst is sulfidized, most of the iron is in the form of magnetic sulfides, and the remainder is present in the form of the paramagnetic ions Fe2+ and Fe3+. 2. The catalytic activity of these systems in the hydrogenation of o-xylene in the presence of thiophene, which depends on the type of solvent, is due to the paramagnetic iron ions that form a structure in combination with the MoS2; the activity increases with increasing amounts of Fe3+ ions.
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Schedule a callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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