10.1002/cssc.201700348
ChemSusChem
COMMUNICATION
The control experiment by the use of H3PO4 as the additive was the
same as the above, but 4 mmol of H3PO4 was added.
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Method of recycling the catalyst
After reaction, the Co-Nx/C-800-AT was collected via centrifugation with
the aim to avoid the loss of the catalyst weight. Then the spent catalyst
was washed with water and ethanol, respectively. The spent catalyst was
dried in a vacuum oven for 12 h at 60 oC. The reuse of the Co-Nx/C-800-
AT catalyst was performed under the identical conditions for the first run.
Other cycles were the same as described above.
Acknowledgements
This work was financially supported by the National Natural
Science Foundation of China (21203252).
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Keywords: Nitro compounds • Carbonyl compounds • Reductive
amination• Secondary amines • Transfer hydrogenation
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