皮革科学与工程 ›› 2024, Vol. 34 ›› Issue (2): 22-29.doi: 10.19677/j.issn.1004-7964.2024.02.004

• 试验研究 • 上一篇    下一篇

胶原纤维基氮掺杂碳负载Ru催化二苯醚氢解

张家铭1, 周倩1, 段景峰1, 孙宇航1, 陈奕霏1, 肖霄1,2,*   

  1. 1.四川大学轻工科学与工程学院,四川 成都 610065;
    2.四川大学制革清洁技术国家工程实验室,四川 成都 610065
  • 收稿日期:2023-11-28 修回日期:2024-01-09 接受日期:2024-01-10 出版日期:2024-04-01 上线日期:2024-03-07
  • 通讯作者: *肖霄(1988-),男,副研究员,硕士生导师,主要研究方向:生物质转化利用与生物质功能材料。E-mail:xiao_xiao@scu.edu.cn。
  • 作者简介:张家铭(1998-),男,硕士研究生,主要研究方向:木质素氢解。E-mail:2021223085078@stu.scu.edu.cn。
  • 基金资助:
    国家自然科学基金(22008159)

Hydrogenolysis of Diphenyl Ether Catalyzed by Collagen Fiber based N-doped Carbon Supported Ru

ZHANG Jiaming1, ZHOU Qian1, DUAN Jingfeng1, SUN Yuhang1, CHEN Yifei1, XIAO Xiao1,2,*   

  1. 1. College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China;
    2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
  • Received:2023-11-28 Revised:2024-01-09 Accepted:2024-01-10 Published:2024-04-01 Online:2024-03-07

摘要: 利用胶原纤维富含N元素的特点,以胶原纤维为基底,借鉴胶原纤维固化单宁法结合高温碳化,制备了基于胶原纤维的氮掺杂碳负载Ru催化剂,用于木质素催化氢解。红外光谱和X射线光电子能谱分析表明Ru通过与单宁酸的络合作用负载在胶原纤维上,经碳化后形成胶原纤维基碳负载Ru催化剂(Ru/TNC)。扫描电镜、透射电镜和电感耦合等离子体发射光谱分析表明,Ru/TNC具有较低的Ru负载量(1.14%)和丰富孔隙结构,Ru以较小的纳米颗粒形式均匀负载在碳载体表面。二苯醚氢解结果表明,相比传统浸渍法制备氮掺杂碳负载Ru,Ru/TNC具有更好的性能,其催化二苯醚氢解转化率在280 ℃时达100%,且产物均为小分子单体,包括苯(22.2%)、环己烷(27.8%)、环己醇(35.7%)和环己酮(14.3%)。

关键词: 胶原纤维, 生物质, 木质素, 催化, 氢解

Abstract: A N-doped carbon supported Ru catalyst based on collagen was prepared by using the immobilized tannin method combined with carbonization. Collagen fiber was chosen as a substrate due to its rich nitrogen content, and the prepared catalyst was used for the hydrogenolysis of lignin. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analysis showed that Ru was loaded on collagen fiber through the chelation of Ru and tannic acid, and the collagen-based carbon supported Ru catalyst (Ru/TNC) was fabricated after the carbonization. Scanning electron microscopy, transmission electron microscopy and inductively coupled plasma emission spectroscopy revealed that Ru/TNC exhibited a low Ru loading (1.14%) and porous structures. Ru nanoparticles were homogeneously loaded on the surface of carbon support with a low dimension. The hydrogenolysis results of diphenyl ether indicated that Ru/TNC exhibited higher activity as compared with the carbon supported Ru catalyst prepared by traditional impregnation method. The diphenyl ether hydrogenolysis conversion of 100% was achieved if Ru/TNC was used at 280 ℃, and all products were monomers including benzene (22.2%), cyclohexane (27.8%), cyclohexanol (35.7%), and cyclohexanone (14.3%).

Key words: collagen fiber, biomass, lignin, catalysis, hydrogenolysis

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