Journal
BIORESOURCE TECHNOLOGY
Volume 333, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.124977
Keywords
Molybdenum; Lignin; Herbaceous; Hydrogenolysis; Reductive catalytic fractionation
Funding
- National Natural Science Foundation of China [31971607]
- Ministry of Education, China-111 Project [BP0820033]
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The study demonstrated the successful utilization of a low-cost MoO2/C catalyst for reductive catalytic fractionation of various herbaceous biomass feedstocks, resulting in high yields and selectivity of phenolic monomers, along with the production of solid carbohydrate pulps suitable for enzymatic hydrolysis.
In this work, a low-cost MoO2/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, H2 pressure, and sawdust size were examined in terms of monophenols yield, selectivity, delignification and sugar retention. This study showed that MoO2/C could function as an excellent catalyst for lignin fragmentation as well as the fractionation of herbaceous biomass components.
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