Fe 3 O 4 @SiO 2 @CuZnAl‐O Catalysts for Conversion of Lignin in Supercritical Methanol ▴

作者：Jianjun Chen, Shuo Hui, Guirong Bao, Jia Luo, Yiming Meng, Jianquan LI, A. Wang, Shijing Liang · 发表于：Fuel Cells · 年份：2021 · DOI：10.1002/fuce.202000061 · 被引用次数：3 · 研究领域：Lignin and Wood Chemistry、Catalysis for Biomass Conversion、Catalysis and Hydrodesulfurization Studies

Abstract The catalytic degradation of lignin was exploited by magnetic core‐shell Fe 3 O 4 @SiO 2 @CuZnAl‐O catalysts in supercritical methanol (sc‐MeOH) over temperature from 260 °C to 360 °C and the reaction time ranging from 0.5 h to 5 h. The magnetic core‐shell‐structured Fe 3 O 4 @SiO 2 @CuZnAl‐O catalysts with different mole ratio of Cu to Zn were prepared by parallel flow co‐precipitating method. Catalyst Fe 3 O 4 @SiO 2 @Cu 1.2 Zn 4.8 Al 2 ‐O with the maximum specific surface area (142.8 m 2 g −1 ) exhibited the highest lignin conversion of 66% and high selectivity for phenols, ketones and benzenes. The recyclable Fe 3 O 4 @SiO 2 @CuZnAl‐O catalyst allows high catalytic activity and selectivity for phenols, ketones and benzenes in the catalytic conversion of lignin in supercritical methanol. It is believed that this study can provide a promising strategy to prepare core–shell structured base metal nanocatalysts with metal‐oxide shells.