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›› 2010, Vol. 10 ›› Issue (2): 304-308.

• 过程与工艺 • 上一篇    下一篇

溶剂对间二硝基苯催化加氢制间苯二胺反应过程的影响

张新波 许莉勇 袁俊峰 项益智   

  1. 宁波市浙江医药高等专科学校 宁波市浙江医药高等专科学校 浙江工业大学工业催化研究所，绿色化学合成技术国家重点实验室培育基地 浙江工业大学工业催化研究所，绿色化学合成技术国家重点实验室培育基地
  • 收稿日期:2009-11-25 修回日期:2010-01-28 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 张新波

Effects of Solvents on Catalytic Hydrogenation Process of m-Dinitrobenzene to Produce m-Phenylenediamine

ZHANG Xin-bo XU Li-yong YUAN Jun-feng XIANG Yi-zhi   

  1. Zhejiang Pharmace utical College Zhejiang Pharmace utical College Institute of Industrial Catalysis of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology Institute of Industrial Catalysis of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
  • Received:2009-11-25 Revised:2010-01-28 Online:2010-04-20 Published:2010-04-20
  • Contact: ZHANG Xin-bo

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被引次数

23

摘要： 研究了溶剂苯和乙醇对间二硝基苯加氢制间苯二胺的反应过程的影响. 结果表明，中间产物在溶剂中的溶解度对反应选择性有重要影响，间亚硝基硝基苯在苯中含量远小于乙醇. 2 MPa下，随反应温度从50℃升至90℃，反应时间苯溶剂中从350 min减少至75 min，乙醇溶剂中从120 min减少至35 min. 80℃下，随氢压从0.4 MPa升至2.8 MPa，反应时间苯溶剂中从250 min减少至85 min，乙醇中从70 min减少至40 min. 有机物和氢气在溶剂中的溶解度及由溶剂效应引起的催化剂表面的吸脱附行为对反应速率有较大影响.

关键词: 溶剂, 间二硝基苯, 反应过程, 催化加氢, 相分离

Abstract: The effects of solvent benzene and ethanol on catalytic process of hydrogenation m-dinitrobenzene to produce m-phenylenediamine were studied. The solubility of intermediates in solvents has significant effect on its selectivity, and intermediate m-nitoso-nitrobenzene in benzene is less than that in ethanol. With the reaction temperature increasing from 50 to 90℃ (at 2 MPa), the reaction time is reduced from 350 to 75 min in benzene, while from 120 to 35 min in ethanol. With the reaction pressure increasing 0.4 to 2.8 MPa, the reaction time is reduced from 250 to 85 min in benzene, while from 70 to 40 min in ethanol. The solubility of hydrogen and organic product, and the adsorption behaviors of hydrogen and organic product on catalysts in different solvents have significant effects on reaction rate.

Key words: solvent, m-dinitrobenzene, reaction process, catalytic hydrogenation, phase separation

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