Nitrogen-Doped Carbon Materials for the Metal-Free Reduction of Nitro Compounds

被引:85
作者
Liao, Chanjuan [1 ]
Liu, Bing [2 ]
Chi, Quan [2 ]
Zhang, Zehui [2 ]
机构
[1] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China
[2] South Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, Minist Educ, Wuhan 430074, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
metal-free; nitrogen-doped carbon; reduction; nitro compounds; hydrazine hydrate; CATALYZED TRANSFER HYDROGENATION; SELECTIVE HYDROGENATION; MESOPOROUS CARBON; CHEMOSELECTIVE HYDROGENATION; NITROARENES; EFFICIENT; OXIDE; NITROBENZENE;
D O I
10.1021/acsami.8b15300
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
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.
引用
收藏
页码:44421 / 44429
页数:9
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