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Tatiana Yu. Osadchaya, Andrei V. Afineevskii, Dmitry A. Prozorov, Kirill A. Nikitin, Dmitry V. Smirnov
Liquid-phase
hydrogenation of 1-methyl-4-nitrobenzene under conditions of partial
deactivation of the supported nickel catalyst
Abstract
Abstract. The
activity of supported nickel catalyst Ni/SiO2 in the liquid-phase hydrogenation
of 1-methyl-4-nitrobenzene under partial controlled deactivation was studied.
Catalysts with different amounts of supported nickel, which were partially
deactivated by sulfide ion in a controlled manner, were used for the study. A
method for determining the amount of reduced metal on the catalyst surface was
proposed. The amounts of sulfide ion required to deactivate active centers were
determined. The method of K.H. Bartholomew was used to assess the nature of
catalyst deactivation. The number of active nickel atoms blocked by one sulfide
ion was calculated.
Key words: supported
nickel catalyst, 4-nitrotoluene, catalyst deactivation, liquid phase
hydrogenation
Copyright (C) Chemistry Dept., Moscow State University, 2002
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