SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (9): 1195-1200.

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Preparation of Ni/bentonite catalyst and its applications in the catalytic hydrogenation of nitrobenzene to aniline

Yuexiu Jiang1, Xiliang Li1, Zuzeng Qin1,2, Hongbing Ji1,2   

  1. 1 Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2 School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • 收稿日期:2015-11-17 修回日期:2016-03-09 出版日期:2016-09-28 发布日期:2016-11-11
  • 通讯作者: Zuzeng Qin,E-mail address:qinzuzeng@gxu.edu.cn;Hongbing Ji,E-mail address:jihb@mail.sysu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21566005, 21425627), Natural Science Foundation of Guangxi province (2014GXNSFAA118049), the Open Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2013K011), and the Patent Project of Colleges and Universities of Guangxi Zhuang Autonomous Region (KY2015ZL001).

Preparation of Ni/bentonite catalyst and its applications in the catalytic hydrogenation of nitrobenzene to aniline

Yuexiu Jiang1, Xiliang Li1, Zuzeng Qin1,2, Hongbing Ji1,2   

  1. 1 Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2 School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2015-11-17 Revised:2016-03-09 Online:2016-09-28 Published:2016-11-11
  • Supported by:
    Supported by the National Natural Science Foundation of China (21566005, 21425627), Natural Science Foundation of Guangxi province (2014GXNSFAA118049), the Open Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2013K011), and the Patent Project of Colleges and Universities of Guangxi Zhuang Autonomous Region (KY2015ZL001).

摘要: Ni supported on bentonite was prepared by the impregnation method with different nickel contents, applied to the hydrogenation of nitrobenzene to aniline in a fixed-bed reactor, and it was characterized by X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), and X-ray photoelectron spectrometry (XPS). The results showed that Ni/bentonite catalyst with 20 wt% nickel content provided a higher conversion of nitrobenzene and selectivity of aniline compared to other catalysts. NiO was the precursor of the active component of the catalyst, and the small crystallite size as well as the highly dispersed NiO on the Ni/bentonite-20 catalyst, contributed to the catalytic performance. The hydrogenation of nitrobenzene was carried out at 300℃ with a H2 gaseous hourly space velocity of 4800 ml·(g cat)-1·h-1 and a nitrobenzene liquid hourly space velocity of 4.8 ml·(g cat)-1·h-1 over Ni/bentonite-20. A 95.7% nitrobenzene conversion and 98.8% aniline selectivity were obtained.While the nitrobenzene liquid hourly space velocity was 4.8 ml·(g cat)-1·h-1, the yield of aniline was more than 95.0% during a 10-hour reaction.

关键词: Ni/bentonite catalyst, Catalysis, Support, Hydrogenation, Nitrobenzene

Abstract: Ni supported on bentonite was prepared by the impregnation method with different nickel contents, applied to the hydrogenation of nitrobenzene to aniline in a fixed-bed reactor, and it was characterized by X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), and X-ray photoelectron spectrometry (XPS). The results showed that Ni/bentonite catalyst with 20 wt% nickel content provided a higher conversion of nitrobenzene and selectivity of aniline compared to other catalysts. NiO was the precursor of the active component of the catalyst, and the small crystallite size as well as the highly dispersed NiO on the Ni/bentonite-20 catalyst, contributed to the catalytic performance. The hydrogenation of nitrobenzene was carried out at 300℃ with a H2 gaseous hourly space velocity of 4800 ml·(g cat)-1·h-1 and a nitrobenzene liquid hourly space velocity of 4.8 ml·(g cat)-1·h-1 over Ni/bentonite-20. A 95.7% nitrobenzene conversion and 98.8% aniline selectivity were obtained.While the nitrobenzene liquid hourly space velocity was 4.8 ml·(g cat)-1·h-1, the yield of aniline was more than 95.0% during a 10-hour reaction.

Key words: Ni/bentonite catalyst, Catalysis, Support, Hydrogenation, Nitrobenzene

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