Efficient Catalytic Hydrogenation of Lignin-Derived Phenolics Under Mild Conditions
This paper studies the catalytic hydrogenation reduction of lignin-derived phenolic compounds, such as catechol, guaiacol (O-methoxyphenol), phenol, P-methylphenol, O-ethylphenol, O-ethoxyphenol, etc. The reaction system focuses on the catalytic performance of hydrodeoxygenation reactions involving...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
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| Series: | Chemistry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-8549/6/6/98 |
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| Summary: | This paper studies the catalytic hydrogenation reduction of lignin-derived phenolic compounds, such as catechol, guaiacol (O-methoxyphenol), phenol, P-methylphenol, O-ethylphenol, O-ethoxyphenol, etc. The reaction system focuses on the catalytic performance of hydrodeoxygenation reactions involving the phenolic derivatives of the lignin depolymerization products catechol and guaiacol. A series of Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite oxide supports with different Al/Ti ratios were prepared by a co-precipitation method, and a 5% Pd/Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> bifunctional catalyst was prepared by an impregnation method and characterized with XRD, SEM, BET, NH<sub>3</sub>-TPD, etc. Among these, the Pd/Al<sub>2</sub>Ti<sub>1</sub> catalyst had the most excellent catalytic performance. At 100 °C and 2 MPa hydrogen pressure, the conversion of catechol was as high as 100%, and at 100 °C and 5 MPa hydrogen pressure, the conversion of guaiacol reached 90%. |
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| ISSN: | 2624-8549 |