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): 106-116.DOI: 10.1016/j.cjche.2023.06.011

• Full Length Article • 上一篇    下一篇

Influence of support properties on selective oxidation of 2-methylnaphthalene on vanadia-molybdena based catalyst

Yi Yu1, Fanfan Li2, Xiaocong Li3, Guoji Liu1, Li Xu1, Xingchuan Yang1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou 450007, China;
    3. Kaifeng Wujing Industrial Co. Ltd, Kaifeng 475000, China
  • 收稿日期:2023-03-23 修回日期:2023-06-08 出版日期:2023-12-28 发布日期:2024-02-05
  • 通讯作者: Li Xu,E-mail:xuli@zzu.edu.cn;Xingchuan Yang,E-mail:yangxingchuan@zzu.edu.cn
  • 基金资助:
    This work was supported by Henan Province Science and Technology Research Project (232102321041).

Influence of support properties on selective oxidation of 2-methylnaphthalene on vanadia-molybdena based catalyst

Yi Yu1, Fanfan Li2, Xiaocong Li3, Guoji Liu1, Li Xu1, Xingchuan Yang1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou 450007, China;
    3. Kaifeng Wujing Industrial Co. Ltd, Kaifeng 475000, China
  • Received:2023-03-23 Revised:2023-06-08 Online:2023-12-28 Published:2024-02-05
  • Contact: Li Xu,E-mail:xuli@zzu.edu.cn;Xingchuan Yang,E-mail:yangxingchuan@zzu.edu.cn
  • Supported by:
    This work was supported by Henan Province Science and Technology Research Project (232102321041).

摘要: In this work, the catalytic performance of vanadia-molybdena loaded on TiO2, MgO, ZSM-5, NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene (2-MN) to 2-naphthaldehyde (2-NA). Results show that strong interactions between supports (TiO2, ZSM-5) and active components can promote the dispersion of active component. Monolayer VOx and MoOx are the main form on the catalyst surface, which is beneficial to the 2-NA selectivity. However, the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components, thus reducing the 2-NA selectivity. Due to the high Na content, new crystal NaVMoO6 forms on the NaY surface, which is inactive in the reaction. For V-Mo/TiO2, V and Mo can be inserted into the TiO2 lattice, changing the electronic structures of active components and support and improving the activity of surface oxygen species. This investigation highlights an important consideration on supports properties when designing supported catalysts.

关键词: 2-Methylnaphthalene, Catalysis, Partial oxidation, Support, Interactions

Abstract: In this work, the catalytic performance of vanadia-molybdena loaded on TiO2, MgO, ZSM-5, NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene (2-MN) to 2-naphthaldehyde (2-NA). Results show that strong interactions between supports (TiO2, ZSM-5) and active components can promote the dispersion of active component. Monolayer VOx and MoOx are the main form on the catalyst surface, which is beneficial to the 2-NA selectivity. However, the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components, thus reducing the 2-NA selectivity. Due to the high Na content, new crystal NaVMoO6 forms on the NaY surface, which is inactive in the reaction. For V-Mo/TiO2, V and Mo can be inserted into the TiO2 lattice, changing the electronic structures of active components and support and improving the activity of surface oxygen species. This investigation highlights an important consideration on supports properties when designing supported catalysts.

Key words: 2-Methylnaphthalene, Catalysis, Partial oxidation, Support, Interactions