解聚
木质素
催化作用
化学
甲醇
有机化学
溶剂
生物量(生态学)
产量(工程)
键裂
材料科学
海洋学
地质学
冶金
作者
Jiazhi Chen,Fang Lü,Xiaoqin Si,Xin Nie,Junsheng Chen,Rui Lu,Jie Xu
出处
期刊:Chemsuschem
[Wiley]
日期:2016-11-17
卷期号:9 (23): 3353-3360
被引量:112
标识
DOI:10.1002/cssc.201601273
摘要
Efficient depolymerization of woody biomass to produce natural phenolic alcohols not only preserves the original structure of lignin, but also makes the depolymerization process atom-efficient. Here, high yield production of natural phenolic alcohols (38.7 wt %) from woody biomass has been achieved using a Ni/C catalyst in a methanol-water co-solvent. The Ni-based catalyst can efficiently etherify the Cα -OH group in lignin β-O-4 motifs under hydrogen atmosphere, which can break the hydrogen bond between the Cβ -O oxygen and the Cα -OH proton to facilitate the Cβ -O cleavage. It was reported that water can also accelerate the etherification of raw lignin with methanol through in situ formation of acid. Our results suggest that breaking the intramolecular hydrogen bonds can accelerate the Cβ -O cleavage, keeping the original structure of lignin unchanged. This work highlights the significance of structure modification in lignin depolymerization and displays a clear potential for the valorization of whole biomass.
科研通智能强力驱动
Strongly Powered by AbleSci AI