化工进展 ›› 2022, Vol. 41 ›› Issue (4): 1894-1899.doi: 10.16085/j.issn.1000-6613.2021-0814

• 工业催化 • 上一篇    下一篇

负载型铜在萘的α-硝基化反应中的催化性能

洪乾1,2(), 白瑞1, 彭欣华1, 孙鸣1,2, 刘珊珊3, 焦林郁1,2(), 马晓迅1,2   

  1. 1.西北大学化工学院,陕西 西安 710069
    2.国家碳氢资源清洁利用国际科技合作基地,陕北能源先进化工利用技术教育部工程研究中心,陕西省洁净煤转化工程技术中心,陕北能源化工产业发展协同创新中心,陕西 西安 710069
    3.陕西科技大学化学与化工学院,陕西省轻化工助剂重点实验室,陕西 西安 710021
  • 收稿日期:2021-04-18 修回日期:2021-06-13 出版日期:2022-04-23 发布日期:2022-04-25
  • 通讯作者: 焦林郁 E-mail:1102270482@qq.com;lyjiao@nwu.edu.cn
  • 作者简介:洪乾(1992—),男,硕士研究生,研究方向为反应工艺优化。E-mail:1102270482@qq.com
  • 基金资助:
    国家重点研发计划(2018YFB0604603);陕西省自然科学基金(2019JQ-787)

Studies on the catalytic performance of supported copper in the α-nitration of naphthalene

HONG Qian1,2(), BAI Rui1, PENG Xinhua1, SUN Ming1,2, LIU Shanshan3, JIAO Linyu1,2(), MA Xiaoxun1,2   

  1. 1.School of Chemical Engineering, Northwest University, Xi’an 710069, Shaanxi, China
    2.International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advance Use Technology of Shaanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaboration Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi, Xi’an 710069, Shaanxi, China
    3.Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, Shaanxi, China
  • Received:2021-04-18 Revised:2021-06-13 Online:2022-04-23 Published:2022-04-25
  • Contact: JIAO Linyu E-mail:1102270482@qq.com;lyjiao@nwu.edu.cn

摘要:

目前工业上合成 α-硝基萘仍然采用传统的混酸硝化法,然而该方法存在区域选择性不高、官能团耐受性差、产生过量酸性废液以及后处理费用高等诸多局限性,导致环境污染以及生产成本的提高,不符合绿色化学的理念。鉴于 α-硝基萘的应用前景,本文通过浸渍-焙烧-还原等步骤设计合成一系列负载型铜催化剂,实现了萘向 α-硝基萘的高效、经济、绿色的催化转化。其中,以ZSM-5等为载体合成的催化剂Cu/ZSM-5催化效果最好,以较高的分离产率(高达95%)和优异的区域选择性[(α-∶β-)>(98∶2)]得到了目标产物α-硝基萘,而且在重复使用4次后依然保持较高的催化活性和结构稳定性。

关键词: 分子筛, 化学反应, 多相反应, 选择性, 负载型铜催化剂, 硝化, 萘, α-硝基萘

Abstract:

At present, the traditional nitrification method with mixed acids is still often used in the synthesis of α-nitronaphthalene in chemical industry. However, the method has many limitations such as low regional selectivity, poor functional group tolerance, excessive acid waste generated, as well as high cost of post-treatment, which lead to environmental pollution and increase of production cost. This is not in line with the concept of green chemistry. In view of the application prospect of α-nitronaphthalene, a series of supported copper catalysts were designed and synthesized through the steps of impregnation, roasting and reduction, which realized the efficient, economical and green catalytic conversion of naphthalene to α-nitronaphthalene. Among them, the catalyst Cu/ZSM-5 with ZSM-5 as the carrier had the best catalytic performance. The target product α-nitronaphthalene was obtained with high yield (up to 95%) and excellent regioselectivity [(α-∶β-)>(98∶2)]. The catalyst still maintained high catalytic activity and structural stability after recycled for 4 times.

Key words: molecular sieves, chemical reaction, multiphase reaction, selectivity, supported copper catalyst, nitration, naphthalene, α-nitronaphthalene

中图分类号: 

  • TQ246.1