Ultrafine Ru nanoparticles deposited on lignin-derived nitrogen-doped carbon nanolayer for the efficient conversion of levulinic acid to γ-valerolactone

文献类型： 外文期刊

第一作者： Guo, Haoran

作者： Guo, Haoran;Wang, Guanhua;Zhang, Bo;Li, Junkai;Si, Chuanling;Sui, Wenjie;Jia, Hongyu

作者机构： Tianjin Univ Sci & Technol, State Key Lab Biobased Fiber Mfg Technol, China Light Ind Key Lab Papermaking & Biorefinery, Tianjin Key Lab Pulp & Paper,Coll Light Ind Sci &, Tianjin 300457, Peoples R China;Tianjin Univ Sci & Technol, Coll Food Sci & Engn, State Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China;Shandong Acad Agr Sci, Jinan 250132, Shandong, Peoples R China

关键词： Lignin -metal complex; Ultrafine Ru nanoparticles; Nitrogen doping; Levulinic acid hydrodeoxygenation; gamma-valerolactone

期刊名称：RENEWABLE ENERGY （ 2022影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0960-1481

年卷期： 2024 年 222 卷

页码：

收录情况： SCI

摘要： Carbon-supported Ru-based catalysts have shown great potential in the hydrodeoxygenation of biomass-derived chemicals but still suffer from the uneven/unstable metal loading owing to the weak affinity between the metal and the carbon-based support. Herein, novel ultrafine Ru nanoparticles supported on lignin-derived nitrogendoped carbon layers (Ru/LNC) were prepared through a facile pyrolysis of lignin-Ru complex mixed with melamine and further subjected to the hydrodeoxygenation of levulinic acid (LA) into gamma-valerolactone (GVL) using formic acid (FA) as the H-donor. The formation of lignin-Ru complexes and abundant N-anchoring sites collaboratively improve the dispersion of metals, thus forming the ultrafine Ru nanoparticles (similar to 3 nm). Meanwhile, the base site generated by nitrogen -doping promotes the adsorption of acidic reactants (FA and LA) to improve the catalytic performance. Therefore, Ru/LNC catalyst exhibited outstanding catalytic performance (99.5 % of LA conversion and 98.4 % of GVL yield), which was significantly higher than Ru/LC (without N doping) and Ru/C (fabricated through convention impregnation method). Owing to the strong interaction of N species and Ru nanoparticles, Ru/LNC also exhibited improved reusability. Consequently, this work proposes a novel route to fabricate ultrafine Ru nanoparticles embedded on lignin-derived nitrogen-doping carbon nanolayer and further demonstrates its superior applicability in LA hydrodeoxygenation.

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