Coupling of 1,4-Butanediol Dehydrogenation with Nitrobenzene Hydrogenation for Simultaneous Synthesis of gamma-Butyrolactone and Aniline over Promoted Cu-MgO Catalysts: Effect of Promoters

Kannapu Hari Prasad Reddy; Suh Young-Woong; Narani AnandBurri David RajuSeetha Rama Rao Kamaraju

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Coupling of 1,4-Butanediol Dehydrogenation with Nitrobenzene Hydrogenation for Simultaneous Synthesis of gamma-Butyrolactone and Aniline over Promoted Cu-MgO Catalysts: Effect of Promoters

机译：Coupling of 1,4-Butanediol Dehydrogenation with Nitrobenzene Hydrogenation for Simultaneous Synthesis of gamma-Butyrolactone and Aniline over Promoted Cu-MgO Catalysts: Effect of Promoters

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The promotional effect of various transition metal oxides such as Co3O4,Cr2O3 and ZnO with different loadings was studied on Cu-MgO for coupling of 1,4-butanediol dehydrogenation and nitrobenzene hydrogenation for the simultaneous synthesis of gamma-butyrolactone and aniline under hydrogen free environment. All the catalysts were developed (xM-20Cu-(80-x)MgO where M = Co3O4, Cr2O3, ZnO and x = 1 and 10 wt) by precipitation-hydroxycarbonate gel mixing method. The promotional effect of transition metal oxides with various loadings on Cu-MgO catalyst revealed that the apparent changes in the parent solid structure and texture improved the catalytic actvity of xM-20Cu-(80-x)MgO. Interestingly, the results of the promotinal effect of cobalt oxide on Cu-MgO are excellent compared to that of Cr2O3 and ZnO promoters. The high yields (> 90) of gamma-butyrolactone and aniline were observed over 10Co(3)O(4)-20Cu-70MgO catalyst. The N2O pulse chemisoprtion analysis of the catalysts revealed that cobalt oxide containing Cu-MgO exibited high dispersion with smaller particle size of the copper (similar to 22 nm). Moreover, XPS analysis also proved the presence of more surface Cu-0 species and CHNS analysis confirmed the coke resistance of the cobalt oxide promoted Cu-MgO catalysts compared to that of Cr2O3 and ZnO promoted Cu-MgO.

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来源
《Catalysis Letters》 |2017年第1期|90-101|共12页
作者
Kannapu Hari Prasad Reddy; Suh Young-Woong; Narani AnandBurri David RajuSeetha Rama Rao Kamaraju;
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作者单位

Indian Inst Chem Technol, Catalysis, Hyderabad 500007, Andhra Pradesh, India;

Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea;

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正文语种英语
中图分类催化;
关键词
1; 4-Butanediol; gamma-Butyrolactone; Nitrobenzene; Aniline; Cobalt oxide-copper-MgO;

Coupling of 1,4-Butanediol Dehydrogenation with Nitrobenzene Hydrogenation for Simultaneous Synthesis of gamma-Butyrolactone and Aniline over Promoted Cu-MgO Catalysts: Effect of Promoters

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