Catalysis Science & Technology
Paper
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Conclusions
In summary, the Pd/CN shows distinctly high catalytic activity
in the chemoselective hydrogenation of the CC bond of
various α,β-unsaturated carbonyls under mild conditions
(303 K, 1 bar H2). It can be reused 8 times without significant
loss of catalytic activity and selectivity, which is much better
than Pd/Cs. The considerable catalytic performance stems
from the hierarchically porous network and incorporation
of nitrogen atoms. The hierarchically porous network and
mesoporous character enormously inhibit the limitation
of mass transfer of the reactant to the active sites, promote
the free diffusion of molecules and shorten the diffusion
distances in the channels. The introduction of nitrogen
atoms leads not only to a very stable and uniform dispersion
of Pd but also to additional electronic activation of the metal
nanoparticles. This synthesis strategy (by modulation of pore
structure and introduction of heteroatoms in the catalyst
support) can open routes for the design of many more
powerful catalysts.
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Acknowledgements
Financial support from the National Natural Science Founda-
tion of China (21376208 & U1162124), the Zhejiang Provincial
Natural Science Foundation for Distinguished Young Scholars
of China (LR13B030001), the Specialized Research Fund for
the Doctoral Program of Higher Education (J20130060), the
Fundamental Research Funds for the Central Universities, the
Program for Zhejiang Leading Team of S&T Innovation, and
the Partner Group Program of the Zhejiang University and the
Max-Planck Society is greatly appreciated.
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