Nickel nanoparticles inlaid in lignin-derived carbon as high effective catalyst for lignin depolymerization. (October 2019)

• Record Type: Journal Article
• Authors: Wang, Da; Li, Guangci; Zhang, Chuanhui; Wang, Zhong; Li, Xuebing
• Is Part Of: Bioresource technology. Volume 289(2019)
• Publication Date: 2019-10
• Subjects: Lignin depolymerization -- Bio-oil -- Stability -- Metal-support interaction -- Electron effect; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.121629
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Lignin could be effectively converted into bio-oil over inlaid type Ni/C-R catalyst. The Ni/C-R catalyst has high stability for lignin depolymerization. The Ni/C-R catalyst has unique electron structure. Mechanism studies show that the Ni/C-R has better bond breaking ability. Abstract: Ni nanoparticles inlaid in lignin-derived carbon constructing the "inlaid type" Ni/C-I was reported to improve stability and adjust metal-support interaction of lignin hydrogenolysis catalyst. The Ni/C-I was further heat treated in air to prepare Ni/C-R so as to re-expose the blocked active sites by carbon species. A lot of characterization techniques were carried out to confirm the "inlaid structure" of the catalysts. The lignin depolymerization results demonstrated that the Ni/C-R had better catalytic performance than traditional "supported type" Ni/C, 23.3% aromatic monomer yield and 82.4% bio-oil yield were achieved. Moreover, the mechanism studies with lignin model compound revealed that Ni/C-R had better bond breaking ability than Ni/C, even CC bond could be cleaved. The electron effect could be responsible for that, since the electrons could transfer from Ni 0 to carbon support for Ni/C-R, which could improve the bond breaking ability.