应用化学 ›› 2025, Vol. 42 ›› Issue (6): 827-837.DOI: 10.19894/j.issn.1000-0518.250117

• 研究论文 • 上一篇    下一篇

HZSM-5载体酸性对Ru-Co催化糠醛还原胺化反应性能的影响

李健1,2,3, 程海洋1,2,3(), 赵凤玉1,2,3   

  1. 1.中国科学技术大学应用化学与工程学院,合肥 230026
    2.中国科学院长春应用化学研究所,电分析化学国家重点实验室,长春 130022
    3.中国科学院长春应用化学研究所,吉林省绿色化学与过程重点实验室,长春 130022
  • 收稿日期:2025-03-19 接受日期:2025-05-08 出版日期:2025-06-01 发布日期:2025-07-01
  • 通讯作者: 程海洋
  • 基金资助:
    国家重点研发计划项目(2022YFA1504901)

Effect of HSM-5 Support Acidity on the Catalytic Performances of Ru-Co for Reductive Amination of Furfural

Jian LI1,2,3, Hai-Yang CHENG1,2,3(), Feng-Yu ZHAO1,2,3   

  1. 1.School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China
    2.State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    3.Jilin Province Key Laboratory of Green Chemistry and Process,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2025-03-19 Accepted:2025-05-08 Published:2025-06-01 Online:2025-07-01
  • Contact: Hai-Yang CHENG
  • About author:hycyl@ciac.ac.cn
  • Supported by:
    the National Key Research and Development Program of China(2022YFA1504901)

摘要:

糠醛作为重要的木质纤维素生物质衍生平台分子,在氨气和氢气氛围下经还原胺化反应可合成高附加值含氮化合物糠胺(FAM)。 采用沉积沉淀法制备了多种负载型Ru-Co双金属催化剂,对比研究了其在糠醛还原胺化反应中的活性与产物收率差异。 其中,Ru-Co/HZSM-5(27)催化剂在90 ℃、0.8 MPa NH3、3 MPa H2的反应条件下,催化糠醛还原胺化合成FAM的最高收率可达93.8%,表现出优异的催化反应活性与收率。 借助X射线衍射(XRD)、透射电子显微镜(TEM)、氢气程序升温还原(H2-TPR)、氨气程序升温脱附(NH3-TPD)和氢气程序升温脱附(H2-TPD)等表征技术,并结合催化性能测试,详细探究了还原胺化性能与催化剂表面结构及性质的关系。 催化剂载体的性质尤其是表面酸性显著影响催化性能,Ru-Co/HZSM-5(27)催化剂优异的还原胺化性能归因于其具有较强的表面酸性与氢气吸附活化能力,加氢位点与酸性位点之间的协同作用促进了伯亚胺中间体的快速加氢与偕二胺中间体的催化氨解,从而有效抑制了伯亚胺大量累积聚合形成三聚物,显著提高了催化活性及对目标产物FAM的收率。

关键词: 糠醛, 糠胺, 还原胺化, Ru-Co催化剂, 酸性位点

Abstract:

Furfural as an important lignocellulosic biomass derived platform molecule can be transferred into high-value added furfurylamine(FAM) by reductive amination reaction in the ammonia and hydrogen atmosphere. A variety of supported Ru-Co bimetallic catalysts were prepared by deposition-precipitation method, and their activities and product yield in reductive amination of furfural were compared and analyzed. Among them, the Ru-Co/HZSM-5(27) catalyst showed excellent catalytic activity and selectivity, yielding 93.8% FAM in reductive amination of furfural at the reaction condition of 90 ℃, 0.8 MPa NH3 and 3 MPa H2. By means of X-ray diffraction (XRD), transmission electron microscopy (TEM), temperature programmed reduction of hydrogen (H2-TPR), temperature programmed desorption of ammonia and hydrogen (NH3-TPD, H2-TPD), the relationship between reductive amination performance and surface structure of the catalyst was investigated in detail. The properties of support, especially the surface acidity, significantly affect the catalytic performance. The excellent catalytic performance of Ru-9Co/HZSM-5(27) catalyst is attributed to its strong acidity and hydrogen activation ability. Through the synergistic effect between the hydrogenation site and the acidic site, the rapid hydrogenation of primary imine and the catalytic ammonolysis of gem-diamine intermediates were promoted, which effectively inhibited the polymerization of primary imine to form trimers and significantly improved the catalytic activity and yield to FAM.

Key words: Furfural, Furfurylamine, Reductive amination, Ru-Co catalyst, Acidic site

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