RSC Advances
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Notes and references
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Fig. 7 Reusability studies of Fe3O4@nSiO2@mSiO2@Ni–Co–B on the
selective hydrogenation of cinnamic acid to hydrocinnamic acid.
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Fe3O4@nSiO2 should account for the lower activity of Fe3O4@
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4. Conclusions
In conclusion, a novel magnetic mesoporous core–shell nano-
composite Fe3O4@nSiO2@mSiO2@Ni–Co–B was prepared and
showed excellent activity in the selective hydrogenation of cin-
namic acid to hydrocinnamic acid. The existence of the mSiO2
shell affords this nanocomposite larger surface area and pore
volume, making the active Ni–Co–B species highly dispersed on
its surface, and then accounting for its high activity. Meanwhile,
this nanocomposite can be easily separated by magnet aer
reaction due to its high magnetism and recycled ve times
without signicant loss of its initial catalytic activity, demon-
strating its good stability.
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Acknowledgements
Financial support by the National Natural Science Foundation
of China (21376060), the Natural Science Foundation of Hebei
Province (B2014201024), and the Science Foundation of Hebei
University (3333112) are gratefully acknowledged.
44306 | RSC Adv., 2014, 4, 44302–44306
This journal is © The Royal Society of Chemistry 2014