胶原纤维基氮掺杂碳负载Ru催化二苯醚氢解  

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

作　　者：张家铭 周倩[1] 段景峰 孙宇航 陈奕霏 肖霄 ZHANG Jiaming;ZHOU Qian;DUAN Jingfeng;SUN Yuhang;CHEN Yifei;XIAO Xiao(College of Biomass Science and Engineering,Sichuan University,Chengdu 610065,China;National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China)

机构地区：[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

出　　处：《皮革科学与工程》2024年第2期22-29,共8页Leather Science and Engineering

基　　金：国家自然科学基金(22008159)。

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%)。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%).

关 键 词：胶原纤维 生物质 木质素 催化 氢解 

分 类 号：O636.2[理学—高分子化学]