Highly Selective Hydrogenation of Lignin-Derived Aromatics at Low Temperature Over Ru-Fe Bimetallic Nanoparticles Supported on Porous Nitrogen-Doped Carbon

Li, Yanhong; Liu, Fang-Jing; Guo, Jia-Pei; Yin, Fan; Gao, Shanshan; Lu, Yao; Song, Rui; Yu, Yan-Hu; Zheng, Juan-Juan; Zhao, Yun‐Peng; Zhang, Riguang; Huang, Zaixing; Cao, Jing‐Pei; Wei, Xian‐Yong; Fan, Maohong

doi:10.2139/ssrn.4164471

Cited by 1 publication

(1 citation statement)

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“…It has been shown that the presence of N promoted the transfer of electrons from N atoms to metals, forming electron-rich metal nanoparticles. 34,35 Electron-rich metal nanoparticles positively contribute to lignin hydrogenolysis. Different second metals (Co/Ni/Fe/Cu) were introduced on the basis of 1% Pd@NDCS for enhancing the hydrogenolytic activity of lignin (Table 1, entries 4−7).…”

Section: Catalytic Hydrogenolysis Of Ligninmentioning

confidence: 99%

Sustainable Production of High-Value Chemicals from Selective Hydrogenolysis of Lignin Catalyzed by Co–Pd Bimetallic Supported on Nitrogen-Doped Carbon Spheres

Liang,

Fu,

Qiu

et al. 2024

Energy Fuels

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The production of fuel and chemicals from renewable lignin supplies a sustainable chemical engineering process. In this study, Co−Pd bimetallic supported on porous polymer-derived nitrogen-doped carbon spheres (NDCS) was employed for the selective hydrogenolysis of organosolv lignin. Most of the products are phenolic monomers. At optimal conditions, 2.5 MPa H 2 , 280 °C for 5 h, 86.74% liquefaction of lignin and 36.38 wt % yield of phenolic monomers were obtained. Among these monomer products, 60.83% were identified as 4-hydroxy-3,5dimethoxyphenylacetic acid (22.13 wt % yield), which is an important pharmaceutical intermediate. With the help of the characterization of catalysts and hydrogenolysis products, the reaction mechanism was proposed. The NDCS provided the prerequisites for metal anchoring and dispersion, and smaller metal particle sizes (2.56 nm) were obtained compared to those of undoped nitrogen carriers. Meanwhile, the synergistic interaction between Pd 0 and Co 0 promoted the conversion of active hydrogen. With active hydrogen, the C−C and C−O bonds in the lignin were cleaved, and then the active O was transferred to the Pd 2+ and Co 2+ sites and catalyzed the oxidation of 4-allyl-2,6-dimethoxyphenol to 4-hydroxy-3,5dimethoxyphenylacetic acid. Lastly, cycling experiments demonstrated the remarkable stability of the catalyst.

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Section: Catalytic Hydrogenolysis Of Ligninmentioning

confidence: 99%