Study of Mesoporous Zr-TiO2 Catalyst with Rich Oxygen Vacancies for N-Methylmorpholine Oxidation to N-Methylmorpholine-N-oxide
A series of Zr-TiO<sub>2</sub> catalysts were prepared using a facile sol-gel method and were used for N-methylmorpholine (NMM) oxidation to N-methylmorpholine-N-oxide (NMMO). The structure features of Zr-TiO<sub>2</sub> catalysts were studied in detail through a variety of characterization methods, such as XRD, SEM, N<sub>2</sub> adsorption-desorption isotherms, XPS, EPR, and O<sub>2</sub>-TPD. As-obtained 5%Zr-TiO<sub>2</sub> catalysts had superior catalytic performance and stability with a 97.6% NMMO yield at 40 °C, which related to Zr doping, a higher surface area, more oxygen vacancies, and oxygen chemisorption on the catalytic surface. This work provides an efficient preparation strategy of TiO<sub>2</sub>-based catalysts for selective oxidation reactions by a facile method.
Authors
- Chao Zhao (ORCID: https://orcid.org/0000-0002-4457-5039)
- Yongwei Li (ORCID: https://orcid.org/0009-0004-6380-9015)
- Yucui Shi
- Fangfang Liu (ORCID: https://orcid.org/0000-0002-4620-9251)
- Jiao Li (ORCID: https://orcid.org/0009-0001-8479-5693)
- Lijuan Feng (ORCID: https://orcid.org/0000-0001-9529-8257)
- Zhihao Fang (ORCID: https://orcid.org/0009-0007-1563-9092)
Institutions
- Weifang University of Science and Technology (CN)
Publication Details
- Journal
- Molecules
- Published
- 2024-08-11
- DOI
- https://doi.org/10.3390/molecules29163812
- Citations
- 4
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 0.47
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province
- Weifang University of Science and Technology