Ru Distribution and Activity of Ru/C Catalyst for Continuous Hydrogenation of 3,5-dimethylpyridine

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-03-05 DOI:10.1007/s10562-025-04969-y

Kerou Wan, Jie Cheng, Li Zhang, Tao Lin, Mingming Gao, Yuecun Wang, Tong Mou, Yuefeng Li

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Abstract

3,5-Dimethylpiperidine (DPI) is a crucial fine chemical used in the pesticide industry. The selective catalytic hydrogenation of DPI is of significant importance for efficient and sustainable production. In this study, we developed a novel, clean continuous process using a trickle bed reactor (TBR) for the hydrogenation of 3,5-dimethylpyridine (DPY) to DPI. This process offers enhanced efficiency, stability, and high-quality DPI production. Via detailed investigation of the impregnation solution pH, along with the distribution and electronic state of Ru species on the Ru/C catalyst, we have revealed the key factors for influencing catalytic performance. The findings provide valuable insights for optimizing catalyst properties, leading to the successful application of Ru/C catalysts in the continuous hydrogenation of pyridine derivatives, including DPY. This work holds significant potential for efficient large-scale continuous production of DPI and related compounds.

Graphical Abstract

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3,5-二甲基吡啶连续加氢Ru/C催化剂的Ru分布及活性

3,5-二甲基哌啶（DPI）是农药工业中重要的精细化学品。DPI的选择性催化加氢对高效、可持续生产具有重要意义。在这项研究中，我们开发了一种新的、清洁的连续工艺，使用滴流床反应器（TBR）将3,5-二甲基吡啶（DPY）加氢为DPI。该工艺提供了更高的效率、稳定性和高质量的DPI生产。通过对浸渍液pH、Ru在Ru/C催化剂上的分布和电子态的详细研究，揭示了影响Ru/C催化剂性能的关键因素。这些发现为优化催化剂性能提供了有价值的见解，导致Ru/C催化剂成功应用于吡啶衍生物的连续加氢，包括DPY。这项工作对高效、大规模连续生产DPI及其相关化合物具有重要的潜力。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.