期刊
FUEL PROCESSING TECHNOLOGY
卷 248, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2023.107835
关键词
Lignin-derived fuels; Lignin catalytic transfer hydrogenolysis; Ultrafine Ni catalyst; N -doped carbon support; Depolymerized lignin characterization
This study presents a novel nano-catalyst, ultrafine Ni nanocluster anchored on N-doped carbon nanosheets (Ni/LNC), for efficient catalytic transfer hydrogenolysis of poplar organosolv lignin. The catalyst shows excellent catalytic activity under mild conditions and exhibits good recycling stability, providing a simple and low-cost approach for lignin hydrogenolysis synthesis.
Lignin hydrogenolysis into monophenols presents a promising route for lignin-based chemical and fuel production but still suffers from harsh reaction conditions (e.g. high temperature and high external H2 pressure). Herein, we report an ultrafine Ni nanocluster anchored on N-doped carbon nanosheets (Ni/LNC) for efficient catalytic transfer hydrogenolysis of poplar organosolv lignin. The catalyst was fabricated through a simple pyrolysis process of lignin-nickel complex mixed with melamine, in which the lignin coordination greatly improved the Ni dispersion and the strong Ni-N interaction inhibited the Ni nanocluster growth, resulting in the ultrafine particle size (1-2 nm). Under mild conditions (160 degrees C, 1 h), 22.08% of monophenol yield was obtained over the catalyst, which was significantly higher than those over the two reference catalysts (Ni/AC and Ni/LC) as well as other previously reported Ni-based catalysts. The excellent catalytic activity can be attributed to both the substantial increase in catalytic active sites and the enhancement in H transfer from methanol resulted from the electron-rich N-doped nanosheet support. Finally, magnetically recycled Ni/LNC showed excellent recycling stability. Consequently, this work presents a facile and low-cost approach for the synthesis of N-doped carbon nanosheet supported ultrafine Ni nanocluster and further demonstrates its superior applicability in lignin hydrogenolysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据