Chlorine-Modified Ru/TiO2 Catalyst for Selective Guaiacol Hydrodeoxygenation
| Autor: | Leilei Zhou, Haiyang Cheng, Xinchao Wang, Fengyu Zhao, Zhuangqing Wang, Peixuan Wu, Yanchun Liu, Masahiko Arai, Chao Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Catalysis Metal chemistry.chemical_compound visual_art visual_art.visual_art_medium Chlorine Environmental Chemistry Phenol Guaiacol 0210 nano-technology Selectivity Hydrodeoxygenation Deoxygenation |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 9:3083-3094 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.0c07292 |
| Popis: | The selective hydrodeoxygenation of lignin-derived guaiacol to value-added products, especially phenol, under relatively mild reaction conditions remains an important challenge. A Cl-modified Ru/TiO₂ catalyst exhibited higher phenol selectivity compared with an unmodified one in the conversion of guaiacol in 1,4-dioxane at 240 °C and 1 MPa H₂. Unlike Ru/TiO₂, the modified catalyst exhibited a modest activity of demethoxylation producing phenol but an inferior ability of hydrogenation of its aromatic ring, resulting in much slower consumption of phenol. The Cl species were likely localized at the metal–support interface and on the surface of metal particles, and these modified both Ru and Ti species electronically. It is presumed that electron-enriched Ru inhibits the ring hydrogenation reaction, and the defects on the TiO₂ surface promote the deoxygenation reaction. |
| Databáze: | OpenAIRE |
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