College of Science, Beijing Forestry University, Beijing 100083, People's Republic of China.
Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology, Tangshan 063210, People's Republic of China.
Bioresour Technol. 2021 Aug;333:124977. doi: 10.1016/j.biortech.2021.124977. Epub 2021 Mar 19.
In this work, a low-cost MoO/C catalyst was prepared for the reductive catalytic fractionation (RCF) of various herbaceous biomass feedstocks (Miscanthus, Triarrhena, Floridulus, Sorghum stem and Corncob). Phenolic monomers from the hydrogenolysis of lignin component were obtained in up to 26.4 wt%, with high selectivity towards methyl coumarate (33%) and methyl ferulate (24%). The RCF left solid carbohydrate pulps with high retentions (up to 87%), which were suitable for enzymatic hydrolysis. The reaction conditions, including temperature, time, H pressure, and sawdust size were examined in terms of monophenols yield, selectivity, delignification and sugar retention. This study showed that MoO/C could function as an excellent catalyst for lignin fragmentation as well as the fractionation of herbaceous biomass components.
在这项工作中，制备了一种低成本的 MoO/C 催化剂，用于还原催化分级（RCF）各种草本生物质原料（芒草、芦竹、淫羊藿、高粱茎和玉米芯）。木质素组分氢解得到的酚类单体最高可达 26.4wt%，对香豆酸甲酯（33%）和阿魏酸甲酯（24%）具有高选择性。RCF 留下了固体碳水化合物浆粕，保留率高（高达 87%），适合酶水解。从单酚收率、选择性、脱木质素和糖保留率等方面考察了温度、时间、H2 压力和木屑粒度等反应条件。本研究表明，MoO/C 可以作为木质素断裂和草本生物质组分分级的优良催化剂。
