Catalytic hydrodenitrogenation of pyridine under hydrothermal conditions: a comprehensive study
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Catalytic hydrodenitrogenation of pyridine under hydrothermal conditions: a comprehensive study
- 发表刊物：
- ACS Sustainable Chemistry & Engineering
- 摘要：
- This paper focuses on kinetic modeling and catalytic performance of hydrodenitrogenation of pyridine under hydrothermal conditions. Piperidine derivatives are the major nitrogen containing intermediates, including 1-piperidinecarboxaldehyde, 1-piperidineethanol, and alkyl piperidines. Catalysts overall improved the formation of N-free products including 1-pentanol, 2-methyl-1-pentanol. Commercial Pd/C provided the highest pyridine conversion rate at 350 °C, while homemade Ni-Ru bimetallic catalyst provided a prominent denitrogenating activity at 400 °C, leading to highest 1-pentanol yield as a major denitrogenated product. Conversion of pyridine over Ni50Ru50/C catalyst leads to formation of three major alkyl piperidines (1-ethyl piperidine, 1-methyl piperidine and 1-pentyl piperidine). These alkyl piperidines intermediates could be further converted into amino and N-free compounds. A kinetic model is developed to mathematically describe the hydrothermal HDN reaction of pyridine over Ni50Ru50/C catalyst, which clearly captures all data trends and fits the temporal variation of all major products. Sensitivity analysis suggested dehydrogenation from piperidine to pyridine has a strong impact on the whole reaction pathways.
- 合写作者：
- Yang Guo*, Xu Liu, Peigao Duan, Donghai Xu, Rafael Luque
- 是否译文：
- 否
- 发表时间：
- 2020-12-04