3D-interconnected hierarchical porous N-doped carbon supported ruthenium nanoparticles as an efficient catalyst for toluene and quinoline hydrogenation
3D-interconnected hierarchical porous N-doped carbon supported ruthenium nanoparticles as an efficient catalyst for toluene and quinoline hydrogenation
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3D互连分层多孔氮掺杂碳负载钌纳米颗粒作为甲苯和喹啉加氢的有效催化剂
DOI：
10.1039/c6gc01858k
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发表时间：
2016-11
期刊：
影响因子：
9.8
通讯作者：
Wang Yong
中科院分区：
文献类型：
--
作者：
Tang Minghui;Deng Jiang;Li Mingming;Li Xuefeng;Li Haoran;Chen Zhirong;Wang Yong
Ru纳米粒子(2.6 nm)均匀分散在三维互联多孔掺氮碳材料(Ru/NHPC)上，在温和的条件下可用于芳烃选择加氢反应。采用生物质α-纤维素为碳源，草酸铵为氮源和发泡剂的“膨化”新策略，使NHPC材料具有较大的比表面积(870m2 g−1)、良好的分级纳米结构和良好的传质通道，并具有较高的稳定和分散Ru纳米颗粒的能力。在相同的反应条件下，Ru/NHPc催化剂对甲苯(TOF高达39 000h−1)和喹啉(TOF高达2858h−1)的加氢反应活性明显高于Ru/HPC(无氮掺杂的三维多孔炭)和Ru/AC(商业活性碳)。进一步的研究表明，三维连通的孔道结构和N掺杂有助于改善Ru纳米颗粒的扩散和传质，均匀分散和高比例的Ru0(活性中心)，从而导致相当大的催化性能。本工作为NHPC材料负载型催化剂在高活性精细化工生产中的应用提供了巨大的潜力。
Ruthenium nanoparticles (2.6 nm) uniformly dispersed on a three-dimensional (3D) interconnected hierarchical porous N-doped carbon (Ru/NHPC) have been successfully developed, serving as a highly active and stable catalyst for the selective hydrogenation of aromatics under mild conditions. A novel “leavening” strategy, i.e. using biomass-derived α-cellulose as a carbon precursor and ammonium oxalate as both a nitrogen source and foaming agent, affords the NHPC material a large surface area (870 m2 g−1), an excellent hierarchical nanostructure which acts as a convenient mass transfer channel and a high ability in stabilizing and dispersing Ru nanoparticles. The Ru/NHPC catalyst exhibits a substantially enhanced activity for the hydrogenation of toluene (TOF up to 39 000 h−1) and quinoline (TOF up to 2858 h−1) in comparison with Ru/HPC (3D-hierarchical porous carbon without nitrogen doping) and Ru/AC (commercial activated carbon) under the same reaction conditions. Further investigations indicate that the 3D interconnected porous structure and N-doping contribute to the improved diffusion and mass transfer, homogeneous dispersion of ruthenium nanoparticles and high percentage of Ru0 (active sites), which results in considerable catalytic performance. This work offers great potential for the application of supported catalysts based on NHPC materials in fine chemical production with high activity.
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影响因子：
17.1
作者：
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通讯作者：
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影响因子：
12.9
作者：
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通讯作者：
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影响因子：
10.9
作者：
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通讯作者：
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影响因子：
15
作者：
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通讯作者：
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影响因子：
7.3
作者：
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通讯作者：
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