Co-CoO
x
-containing N-doped porous carbon-supported
palladium catalysts were prepared via a ZIF precursor calcination
and a simple impregnation route. The material was employed for the
hydrogenolysis of 5-hydroxymethylfurfural (HMF) to 2,5-dimethylfuran
(DMF). The Co-CoO
x
-containing N-doped
porous carbon provides a high dispersion and anchoring effect on active
metal as well as abundant surface defects with strong adsorption ability
to the oxygenated groups and enhanced electron transfer capability,
which could promote the activation and H2 spillover and
the cascade reaction of HMF hydrogenolysis to DMF. As-obtained palladium-based
nanocatalysts exhibited excellent catalytic hydrogenolysis performance,
and there is no apparent change in activity in six runs. The reasonable
synergism between surface defects and active metallic species is the
primary reason for such excellent catalytic effects. Most importantly,
the strategy proposed enables us to adjust the physicochemical properties
of the catalyst surface to design new bifunctional catalysts with
significantly improved performance.
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