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Catalytic pyrolysis of eucalyptus sawdust for production of methoxy-aromatic compounds
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Jing Xu1, Yang An2, Jianglong Yu1, Jinxiao Dou1
Renewable Energy Resources | 2025, 43(5) : 569 - 576
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Renewable Energy Resources | 2025, 43(5): 569-576
Catalytic pyrolysis of eucalyptus sawdust for production of methoxy-aromatic compounds
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Jing Xu1, Yang An2, Jianglong Yu1, Jinxiao Dou1
Affiliations
  • 1 School of Chemical Engineering, Key Lab of Liaoning Province for Advanced Coal and Coking Technology University of Science and Technology Liaoning Anshan 114051 China
  • 2 College of Chemical and Environmental Engineering Yingkou Institute of Technology Yingkou 115014 China
Outline
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The effects of reaction temperature and alkaline catalyst on the yield of pyrolysis products and the selectivity of methoxy-aromatic compounds were studied during microwave-assisted pyrolysis of eucalyptus sawdust in a fixed-bed reactor. The results showed that 400 °C was the optimum temperature for methoxy-aromatic compounds production, where the yield of bio-oil was 28.4%, and the concentration of methoxy-aromatic compounds in the bio-oil reached to 70.4%. The dominant methoxy-aromatic compounds were identified as guaiacyl and syringyl derivatives. Weakly alkaline catalysts (K2CO3 and Na2CO3) enhanced both bio-oil yield and the methoxy-aromatic compounds selectivity. However, the strong base NaOH reduces methoxy-aromatic compounds content. The catalytic efficiency for methoxy-aromatic compounds selectivity followed the order: Na2CO3 >K2CO3 >NaHCO3 >NaOH. Furthermore, the reaction mechanisms underlying the formation of MACs from woody biomass and their subsequent conversion into benzoquinone, phenol, and catechol were elucidated, with guaiacol serving as a key structural model.

catalytic pyrolysis  /  methoxy-aromatics compounds  /  microwave-assisted pyrolysis  /  woody biomass  /  reaction mechanism
Jing Xu, Yang An, Jianglong Yu, Jinxiao Dou. Catalytic pyrolysis of eucalyptus sawdust for production of methoxy-aromatic compounds[J]. Renewable Energy Resources, 2025 , 43 (5) : 569 -576 .
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Year 2025 volume 43 Issue 5
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  • Receive Date：2024-01-23
  • Online Date：2025-07-16
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  • Received：2024-01-23
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    1 School of Chemical Engineering, Key Lab of Liaoning Province for Advanced Coal and Coking Technology University of Science and Technology Liaoning Anshan 114051 China
    2 College of Chemical and Environmental Engineering Yingkou Institute of Technology Yingkou 115014 China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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