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International Journal of Biological Macromolecules

International Journal of Biological Macromolecules

IF: 7.7
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Bimetallic nickel?cobalt sulfide derived from lignin-MOFs hybrid as a high-efficiency heterogeneous catalyst for hydrogenolysis of lignin dimers

Published:10 December 2024 DOI: 10.1016/j.ijbiomac.2024.138658 PMID: 39667449
Haonan Xue,?Haihong Xia,?Hui Li,?Fei Ge,?Wei Xu,?Xiaohui Yang,?Minghao Zhou

Abstract

Lignin represents a significant source of aromatic hydrocarbons in the natural world. The production of high-value chemicals from lignin has the great potential to effectively address the issue of fossil energy scarcity. In this study, complex sulfides of nickel?cobalt bimetallic catalysts were prepared via hydrothermal synthesis and subsequently employed in the catalytic hydrogenolysis of CO bonds present in lignin. A series of complex sulfides Ni3S2/Co3S4-CSn-x-T derived from lignin-MOF (n?=?0.5, 1, 1.5 and 2; x?=?2, 4 and 6; T?=?400, 500, 600 and 700?°C), were prepared under different conditions and subsequently employed in the catalytic hydrogenolysis of lignin model compounds. The optimal catalyst Ni3S2/Co3S4-CS1-4-500 exhibited the highest conversion rate of benzyl phenyl ether (BPE) (about 97.3?%), and the yields of toluene and phenol produced were 49.5?% and 43.6?%, respectively with isopropanol as the reaction solvent and no external H2. The introduction of element sulfur in catalysts could effectively inhibit the further hydrogenation of generated aromatic chemicals. The catalysts were well characterized, and the results demonstrated that the catalysts exhibited high catalytic activity with an increased loading of active components. This study provided some novel findings for the construction of biomass-based catalysts and the production lignin-derived aromatic chemicals.

Substances (9)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Isopropyl alcohol 67-63-0 C3H8O 1648 suppliers $7050.00
N,N-Dimethylformamide 68-12-2 C3H7NO 1215 suppliers $11.20-$12200.00
Methanol 67-56-1 CH4O 838 suppliers $9.00-$7620.00
Ethanol 64-17-5 C2H6O 809 suppliers $10.00-$17310.00
Diphenyl ether 101-84-8 C12H10O 669 suppliers $5.00-$700.00
Thiourea 62-56-6 CH4N2S 593 suppliers $18.00-$1095.00
Trimesic acid 554-95-0 C9H6O6 518 suppliers $6.00-$1067.00
Cobaltous nitrate hexahydrate 10026-22-9 CoH12N2O12 340 suppliers $17.47-$1060.00
2'-Phenoxyacetophenone 721-04-0 C14H12O2 59 suppliers $60.00-$1728.00

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