Study on the removal and depolymerization of lignin from corn stover through the synergistic effect of Bronsted acid, Lewis acid and hydrogenation sites

FUEL

卷:305

Article

Zhang, Baikai¹  Li, Wenzhi^1,2  Zhang, Tingwei³  Li, Xu¹  Ogunbiyi, Ajibola T.¹  Chen, Kun¹  Shen, Changcheng¹ 

[1] Univ Sci & Technol China, Lab Basic Res Biomass Convers & Utilizat, Hefei 230026, Peoples R China

[2] Hefei Inst Energy, Hefei 230051, Peoples R China

[3] Nanjing Forestry Univ, Coll Light Ind & Food Engn, Nanjing 210037, Peoples R China

关键词: Biomass;    Synergistic effect;    Retention rate;    Monomer;   

DOI  :  10.1016/j.fuel.2021.121509

来源: Elsevier

【 摘 要 】

The effective transformation of lignin is an essential part of realizing the comprehensive utilization of biomass. In this study, a one-pot method for the depolymerization of corn stover lignin used aluminum phosphate (NiAPO-5) zeolite catalyst contained Bronsted acid, Lewis acid and hydrogenation sites was proposed. It was found that the number of Bronsted acid sites was increased after NiAPO-5 was reduced with H-2Y. The yield of monomers and residue were 35.70% and 38.09% at 235 degrees C for 3 h, respectively. The result of 2D HSQC NMR showed that the NiAPO-5 (H-2) catalyst significantly affected the cleavage of beta-O-4 bonds. The distribution of products and the stability of catalyst revealed that NiAPO-5 (H-2) was an efficient catalyst for the depolymerization of lignin.

【 授权许可】

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