SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 64 ›› Issue (12): 1-8.DOI: 10.1016/j.cjche.2023.06.013

• Full Length Article •    下一篇

Intrinsic kinetics of catalytic hydrogenation of 2-nitro-4-acetylamino anisole to 2-amino-4-acetylamino anisole over Raney nickel catalyst

Xiangyang Cui1, Xin Zhang1, Baoju Wang1,2, Yuqi Sun1, Haikui Zou1, Guangwen Chu1, Yong Luo1, Jianfeng Chen1   

  1. 1. State Key Laboratory of Organic-Inorganic Composites, Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    2. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China
  • 收稿日期:2022-12-01 修回日期:2023-05-19 出版日期:2023-12-28 发布日期:2024-02-05
  • 通讯作者: Baoju Wang,E-mail:baojuwang@sdut.edu.cn;Yong Luo,E-mail:luoyong@mail.buct.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (22022802 and 22288102).

Intrinsic kinetics of catalytic hydrogenation of 2-nitro-4-acetylamino anisole to 2-amino-4-acetylamino anisole over Raney nickel catalyst

Xiangyang Cui1, Xin Zhang1, Baoju Wang1,2, Yuqi Sun1, Haikui Zou1, Guangwen Chu1, Yong Luo1, Jianfeng Chen1   

  1. 1. State Key Laboratory of Organic-Inorganic Composites, Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    2. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China
  • Received:2022-12-01 Revised:2023-05-19 Online:2023-12-28 Published:2024-02-05
  • Contact: Baoju Wang,E-mail:baojuwang@sdut.edu.cn;Yong Luo,E-mail:luoyong@mail.buct.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (22022802 and 22288102).

摘要: The catalytic hydrogenation of 2-nitro-4-acetylamino anisole (NMA) is a less-polluting and efficient method to produce 2-amino-4-acetamino anisole (AMA). However, the kinetics of catalytic hydrogenation of NMA to AMA remains obscure. In this work, the kinetic models including power-law model and Langmuir-Hinshelwood-Hougen-Watson (LHHW) model of NMA hydrogenation to AMA catalyzed by Raney nickel catalyst were investigated. All experiments were carried out under the elimination of mass transfer resistance within the temperature range of 70–100 ℃ and the hydrogen pressure of 0.8–1.5 MPa. The reaction was found to follow 0.52-order kinetics with respect to the NMA concentration and 1.10-order kinetics in terms of hydrogen pressure. Based on the LHHW model, the dual-site dissociation adsorption of hydrogen was analyzed to be the rate determining step. The research of intrinsic kinetics of NMA to AMA provides the guidance for the reactor design and inspires the catalyst modification.

关键词: Intrinsic kinetics, 2-nitro-4-acetylamino anisole, Catalytic hydrogenation, Raney nickel catalyst

Abstract: The catalytic hydrogenation of 2-nitro-4-acetylamino anisole (NMA) is a less-polluting and efficient method to produce 2-amino-4-acetamino anisole (AMA). However, the kinetics of catalytic hydrogenation of NMA to AMA remains obscure. In this work, the kinetic models including power-law model and Langmuir-Hinshelwood-Hougen-Watson (LHHW) model of NMA hydrogenation to AMA catalyzed by Raney nickel catalyst were investigated. All experiments were carried out under the elimination of mass transfer resistance within the temperature range of 70–100 ℃ and the hydrogen pressure of 0.8–1.5 MPa. The reaction was found to follow 0.52-order kinetics with respect to the NMA concentration and 1.10-order kinetics in terms of hydrogen pressure. Based on the LHHW model, the dual-site dissociation adsorption of hydrogen was analyzed to be the rate determining step. The research of intrinsic kinetics of NMA to AMA provides the guidance for the reactor design and inspires the catalyst modification.

Key words: Intrinsic kinetics, 2-nitro-4-acetylamino anisole, Catalytic hydrogenation, Raney nickel catalyst