Molybdenum-catalyzed hydrogenolysis of herbaceous biomass: A procedure integrated lignin fragmentation and components fractionation

Xue Gong; Jiankui Sun; Xiangya Xu; Bo Wang; Helong Li; Feng Peng

doi:10.1016/j.biortech.2021.124977

Molybdenum-catalyzed hydrogenolysis of herbaceous biomass: A procedure integrated lignin fragmentation and components fractionation

Bioresour Technol. 2021 Aug:333:124977. doi: 10.1016/j.biortech.2021.124977. Epub 2021 Mar 19.

Authors

Xue Gong¹, Jiankui Sun², Xiangya Xu³, Bo Wang⁴, Helong Li⁵, Feng Peng⁶

Affiliations

¹ College of Science, Beijing Forestry University, Beijing 100083, People's Republic of China.
² Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology, Tangshan 063210, People's Republic of China.
³ SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, People's Republic of China.
⁴ Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, People's Republic of China.
⁵ Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, People's Republic of China. Electronic address: helonlee1@bjfu.edu.cn.
⁶ Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, People's Republic of China. Electronic address: fengpeng@bjfu.edu.cn.

PMID: 33872998
DOI: 10.1016/j.biortech.2021.124977

Abstract

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.

Keywords: Herbaceous; Hydrogenolysis; Lignin; Molybdenum; Reductive catalytic fractionation.

MeSH terms

Biomass
Catalysis
Lignin*
Molybdenum*
Plants

Substances

Molybdenum
Lignin