Journal
GREEN CHEMISTRY
Volume 18, Issue 22, Pages 6082-6090Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6gc01858k
Keywords
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Funding
- National Natural Science Foundation of China [21622308, 91534114, 21376208]
- MOST [2016YFA0202900]
- Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China [LR13B030001]
- Fundamental Research Funds for the Central Universities [2016FZA3006]
- Partner Group Program of the Zhejiang University
- Max Planck Society
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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 alpha-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 m(2) 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 Ru-0 (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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