Molybdenum carbide promoted cobalt as an efficient catalyst for selective hydrogenation
2020
Developing heterogeneous catalysts
for hydrogenation under mild
conditions is industrially significant, but there still remain some
challenges in the preparation of inexpensive and highly active catalysts.
Herein, we present Co-MoxC catalysts prepared
by a one-pot pyrolysis method for which excellent catalytic performance
toward selective hydrogenation is achieved. The highest turnover frequency
(TOF) of nitrobenzene hydrogenation reached up to 105.3 h–1 with a selectivity of higher than 99% at 60 °C. As evidenced
by our experiment and analysis, the electronic structure of cobalt
can be affected by the in situ-formed molybdenum carbide, which led
to an improved dispersion via the interaction between Co and MoxC as well as advanced catalytic performance.
These results could provide some potential for the design of efficient
hydrogenation catalysts for further industrial applications.
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