Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 51, Pages 44421-44429Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b15300
Keywords
metal-free; nitrogen-doped carbon; reduction; nitro compounds; hydrazine hydrate
Funding
- Special Fund for Basic Scientific Research of Central Colleges, South-Central University for Nationalities [CZR18001, YCZW1S100]
- National Natural Science Foundation of China [2182175]
- Natural Science Foundation of Hubei Province [2017CFB432]
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In this study, nitrogen-doped carbon materials (labeled as NC-T) were easily prepared by thermal treatment of the melamine-chitosan composite. NC-T catalysts demonstrated good activity toward the reduction of nitro compounds by using hydrazine hydrate (N2H4.H2O) as the reductant. The activity of NC-T enhanced with the rise of the pyrolysis temperature because of the enhanced ratio of graphitic-type nitrogen, which might be the active sites for the reduction of nitro compounds. NC-950 showed high activity for the selective reduction of nitro compounds in hexane to produce amines at yields from 87.5 to 100% at 90 degrees C using 2 equiv of N2H4 center dot H2O. The NC-950 catalyst demonstrated comparable or even higher catalytic activity in comparison with the direct way involving reported metal catalysts. The hydrogenation of nitro compounds with N2H4 center dot H2O proceeded via the hydroxylamine as the reaction intermediate.
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