A review on catalytic conversion of lignin into high-value chemicals over Ni-based catalysts

Lu, Xinyu; Guo, Haoquan; Wang, Dandan; Xiu, Pengcheng; Qin, Yu; Chen, Jiajia; Xu, Chengyun; Gu, Xiaoli

doi:10.1007/s13399-021-01903-1

Cited by 11 publications

(1 citation statement)

References 186 publications

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“…In Section 2.1, it was shown that the addition of Ru to Ni leads to a diminished mean particle size of the active phase and a decreased polydispersity (Figure S3). Moreover, the addition of noble metals to Ni is known to increase the number of electron-rich sites, resulting in a higher catalytic activity in C-O and C-C bond cleavage [90,91]. Besides, the high acidity of the catalyst can play an important role because the acid sites can effectively adsorb the isopropanol and polyphenols, facilitating their further transformation.…”

Section: Catalyst Testingmentioning

confidence: 99%

Lignin Hydrogenolysis over Bimetallic Ni–Ru Nanoparticles Supported on SiO2@HPS

et al. 2023

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Lignin obtained by hydrogenolysis of lignocellulose biomass is a prospective source of valuable green fuels and chemicals such as monophenols. One of the key factors in the chemical decomposition of lignin to monophenols is an efficient catalyst. Inert porous materials such as hypercrosslinked polymers are suitable catalytic supports for the immobilization of noble and transition metal nanoparticles. However, such polymers do not have acidic properties, which are crucial for catalyzing hydrolysis. In this work, we report novel, efficient catalysts for lignin hydrogenolysis to produce valuable monophenolic compounds. The synthesized catalysts contained Ni, Ru, and Ni–Ru nanoparticles supported on SiO2-coated hypercrosslinked polystyrene (SiO2@HPS). Ni-Ru/SiO2@HPS demonstrated remarkable stability without any loss of the metallic phase and a high yield of monophenols (>42 wt.%) at close to full lignin conversion (>95 wt.%). This result was attributed to the synergy between the two metals and the support’s surface acidity. All catalysts were fully characterized by a series of physico-chemical methods.

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Section: Catalyst Testingmentioning

confidence: 99%