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Renewable P-xylene Production by Co-catalytic Pyrolysis of Cellulose and Methanol
李全新
Author NameAffiliationE-mail
李全新 中国科学技术大学化学物理系 liqx@ustc.edu.cn 
Abstract:
This work developed one-step process for renewable p-xylene production by co-catalytic fast pyrolysis (co-CFP) of cellulose and methanol over the different metal oxides-modified HZSM-5 catalysts. It has been proved that La-modified HZSM-5 catalyst was an effective catalyst for the production of bio-based p-xylene. The selectivity and yield of p-xylene strongly depended on the acidity of the catalysts, reaction temperature and methanol content during the catalytic pyrolysis of cellulose. The highest p-xylene yield of 14.5 C-mol% with a p-xylene/xylenes ratio of 86.8% was obtained by the co-CFP of cellulose with 33 wt% methanol over 20%La2O3/HZSM-5 catalyst. The deactivation of the catalysts during the catalytic pyrolysis process was investigated in detail. The reaction pathway for the formation of p-xylene from cellulose was addressed based on the identified products and the characterization of catalysts.
Key words:  Cellulose, P-xylene, Catalytic fast pyrolysis, La-modified HZSM-5
FundProject:
Renewable P-xylene Production by Co-catalytic Pyrolysis of Cellulose and Methanol
李全新
摘要:
This work developed one-step process for renewable p-xylene production by co-catalytic fast pyrolysis (co-CFP) of cellulose and methanol over the different metal oxides-modified HZSM-5 catalysts. It has been proved that La-modified HZSM-5 catalyst was an effective catalyst for the production of bio-based p-xylene. The selectivity and yield of p-xylene strongly depended on the acidity of the catalysts, reaction temperature and methanol content during the catalytic pyrolysis of cellulose. The highest p-xylene yield of 14.5 C-mol% with a p-xylene/xylenes ratio of 86.8% was obtained by the co-CFP of cellulose with 33 wt% methanol over 20%La2O3/HZSM-5 catalyst. The deactivation of the catalysts during the catalytic pyrolysis process was investigated in detail. The reaction pathway for the formation of p-xylene from cellulose was addressed based on the identified products and the characterization of catalysts.
关键词:  Cellulose, P-xylene, Catalytic fast pyrolysis, La-modified HZSM-5
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