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Fe 3 O 4 @SiO 2 @CuZnAl‐O Catalysts for Conversion of Lignin in Supercritical Methanol ▴
Author(s) -
Chen J.,
Hui S.,
Bao G.,
Luo J.,
Meng Y.,
Li J.,
Wang A.,
Liang S.
Publication year - 2021
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.202000061
Subject(s) - catalysis , methanol , supercritical fluid , nanomaterial based catalyst , selectivity , lignin , chemistry , oxide , metal , transition metal , inorganic chemistry , nuclear chemistry , materials science , organic chemistry
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.