Insights in supported rhenium carbide catalysts for hydroconversion of lignin-derived compounds
[EN] Rhenium supported over activated carbon (AC) was carburized under different temperatures (from 500 to 700 °C) under a mixture of H/CH (75/25). Resulting catalysts were characterized by Nsorption, CO chemisorption, temperature programed reduction (TPR), ammonia temperature programed desorption (...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Estado: | Versión aceptada para publicación |
| Data de publicação: | 2020 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/217902 |
| Acesso em linha: | http://hdl.handle.net/10261/217902 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Rhenium carbide Guaiacol Hydrodeoxygenation Carburization Biomass conversion |
| Resumo: | [EN] Rhenium supported over activated carbon (AC) was carburized under different temperatures (from 500 to 700 °C) under a mixture of H/CH (75/25). Resulting catalysts were characterized by Nsorption, CO chemisorption, temperature programed reduction (TPR), ammonia temperature programed desorption (TPD-NH), STEM, and XPS and catalytic properties were measured in a batch reactor at 350 °C, 5.0 MPa for the hydrodeoxygenation (HDO) of guaiacol. Results have shown that Rhenium was gradually reduced and carburized upon increasing the temperature. From 650 °C, a ReC phase was obtained and transformed into ReC at 700 °C. ReC was the most active phase obtained and maximum yield in benzene of 51% was reached at complete conversion. ReC phase showed to inhibit the hydrogenolysis of phenol into benzene. |
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