Construction of dendritic mesoporous SiO2 supported Cu catalyst for hydrodeoxidation of lignin derivatives

Chenhuan Wang; Mengying Wang; Lei Chen; Ningzhao Shang; Wei Gao; Xiang Cheng; Shutao Gao; Yongjun Gao; Chun Wang

doi:10.1016/j.biortech.2024.131503

Construction of dendritic mesoporous SiO₂ supported Cu catalyst for hydrodeoxidation of lignin derivatives

Bioresour Technol. 2024 Sep 18:131503. doi: 10.1016/j.biortech.2024.131503. Online ahead of print.

Authors

Chenhuan Wang¹, Mengying Wang², Lei Chen², Ningzhao Shang², Wei Gao², Xiang Cheng², Shutao Gao², Yongjun Gao³, Chun Wang⁴

Affiliations

¹ School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
² College of Science, Hebei Agricultural University, Baoding 071001, China.
³ College of Chemical and Environmental Science, Hebei University, Baoding 071001, China. Electronic address: yjgao@hbu.edu.cn.
⁴ College of Science, Hebei Agricultural University, Baoding 071001, China. Electronic address: wangchun@hebau.edu.cn.

PMID: 39303946
DOI: 10.1016/j.biortech.2024.131503

Abstract

Chemoselective hydrodeoxygenation (HDO) of lignin derivatives is of great importance in converting biomass into high value-added chemicals. Herein, we report a simple hydrothermal pathway to fabricate a highly active, chemically selective, and reusable catalyst (Cu/DMSN) by loading copper clusters on "dendritic" mesoporous silica nanospheres. Cu/DMSN exhibits exceptional catalytic activity (conversion > 99 %, selectivity > 99 %) in the HDO of vanillin toward 2-methoxy-4-methylphenol under mild conditions (140 °C, 0.5 MPa, 3 h), along with good scalability and a wide range of substrates. The excellent catalytic performance can be owed to the combination of suitable acid site and more exposed metal site. This study provides a new strategy for designing supported metal catalysts for hydrodeoxidation of biomass and its derivatives.

Keywords: Copper clusters; Dendritic mesoporous silica nanospheres; Hydrodeoxygenation; Lignin derivatives.