SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 49 ›› Issue (9): 187-197.DOI: 10.1016/j.cjche.2022.07.009

• Regular • Previous Articles     Next Articles

An efficient bifunctional Ni-Nb2O5 nanocatalysts for the hydrodeoxygenation of anisole

Juan Xu1,2, Ping Zhu3, Islam H. El Azab4, Ben Bin Xu5, Zhanhu Guo6, Ashraf Y. Elnaggar4, Gaber A.M. Mersal7, Xiangyi Liu2, Yunfei Zhi1, Zhiping Lin8, Hassan Algadi9, Shaoyun Shan1   

  1. 1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China;
    2. College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China;
    3. Yunnan Province Special Equipment Safety Inspection and Research Institute, Kunming 650228, China;
    4. Department of Food Science and Nutrition, College of Science, Taif University, Taif 21944, Saudi Arabia;
    5. Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK;
    6. Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA;
    7. Department of Chemistry, College of Science, Taif University, Taif 21944, Saudi Arabia;
    8. Taizhou University, Taizhou 31800, China;
    9. Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran 11001, Saudi Arabia
  • Received:2022-03-05 Revised:2022-07-12 Online:2022-10-19
  • Contact: Zhanhu Guo,E-mail:nanomaterials2000@gmail.com;Shaoyun Shan,E-mail:shansy411@163.com
  • Supported by:
    The authors acknowledge Major Science and Technology Project of Yunnan Province (202102AE090042), National Natural Science Foundation of China (21766016) and the Science and Technology Talent and Platform Program of Yunnan Provincial Science and Technology Department (202005AF150037). The authors acknowledge the financial support of Taif University Researchers Supporting Project (TURSP-2020/27), Taif University, Taif, Saudi Arabia.

An efficient bifunctional Ni-Nb2O5 nanocatalysts for the hydrodeoxygenation of anisole

Juan Xu1,2, Ping Zhu3, Islam H. El Azab4, Ben Bin Xu5, Zhanhu Guo6, Ashraf Y. Elnaggar4, Gaber A.M. Mersal7, Xiangyi Liu2, Yunfei Zhi1, Zhiping Lin8, Hassan Algadi9, Shaoyun Shan1   

  1. 1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China;
    2. College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China;
    3. Yunnan Province Special Equipment Safety Inspection and Research Institute, Kunming 650228, China;
    4. Department of Food Science and Nutrition, College of Science, Taif University, Taif 21944, Saudi Arabia;
    5. Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK;
    6. Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA;
    7. Department of Chemistry, College of Science, Taif University, Taif 21944, Saudi Arabia;
    8. Taizhou University, Taizhou 31800, China;
    9. Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran 11001, Saudi Arabia
  • 通讯作者: Zhanhu Guo,E-mail:nanomaterials2000@gmail.com;Shaoyun Shan,E-mail:shansy411@163.com
  • 基金资助:
    The authors acknowledge Major Science and Technology Project of Yunnan Province (202102AE090042), National Natural Science Foundation of China (21766016) and the Science and Technology Talent and Platform Program of Yunnan Provincial Science and Technology Department (202005AF150037). The authors acknowledge the financial support of Taif University Researchers Supporting Project (TURSP-2020/27), Taif University, Taif, Saudi Arabia.

Abstract: The Ni-Nb2O5 nanocatalysts have been prepared by the sol–gel method, and the catalytic hydrodeoxygenation (HDO) performance of anisole as model compound is studied. The results show that Nb exists as amorphous Nb2O5 species, which can promote Ni dispersion. The addition of Nb2O5 increases the acidity of the catalyst. However, when the content of niobium is high, there is an inactive Nb-Ni-O mixed phase. The size and morphology of Ni grains in catalysts are different due to the difference of Nb/Ni molar ratio. The Ni0.9Nb0.1 sample has the largest surface area of 170.8 m2·g-1 among the catalysts prepared in different Nb/Ni molar ratios, which is mainly composed of spherical nanoparticles and crack pores. The HDO of anisole follows the reaction route of the hydrogenation HYD route. The Ni0.9Nb0.1 catalyst displayed a higher HDO performance for anisole than Ni catalyst. The selectivity to cyclohexane over the Ni0.9Nb0.1 sample is about 10 times that of Ni catalyst at 220 ℃ and 3 MPa H2. The selectivity of cyclohexane is increased with the increase of reaction temperature. The anisole is almost completely transformed into cyclohexane at 240 ℃, 3 MPa H2 and 4 h.

Key words: Hydrodeoxygenation (HDO), Catalysts, Ni-Nb2O5, Sol–gel method, Anisole

摘要: The Ni-Nb2O5 nanocatalysts have been prepared by the sol–gel method, and the catalytic hydrodeoxygenation (HDO) performance of anisole as model compound is studied. The results show that Nb exists as amorphous Nb2O5 species, which can promote Ni dispersion. The addition of Nb2O5 increases the acidity of the catalyst. However, when the content of niobium is high, there is an inactive Nb-Ni-O mixed phase. The size and morphology of Ni grains in catalysts are different due to the difference of Nb/Ni molar ratio. The Ni0.9Nb0.1 sample has the largest surface area of 170.8 m2·g-1 among the catalysts prepared in different Nb/Ni molar ratios, which is mainly composed of spherical nanoparticles and crack pores. The HDO of anisole follows the reaction route of the hydrogenation HYD route. The Ni0.9Nb0.1 catalyst displayed a higher HDO performance for anisole than Ni catalyst. The selectivity to cyclohexane over the Ni0.9Nb0.1 sample is about 10 times that of Ni catalyst at 220 ℃ and 3 MPa H2. The selectivity of cyclohexane is increased with the increase of reaction temperature. The anisole is almost completely transformed into cyclohexane at 240 ℃, 3 MPa H2 and 4 h.

关键词: Hydrodeoxygenation (HDO), Catalysts, Ni-Nb2O5, Sol–gel method, Anisole