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| 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: |
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| Renewable P-xylene Production by Co-catalytic Pyrolysis of Cellulose and Methanol |
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李全新
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| 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 |
| DOI： |
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