Liquid-phase hydrodeoxygenation of guaiacol over Mo2C supported on commercial CNF. Effects of operating conditions on conversion and product selectivity
Autor: | Isabel Suelves, António Portugal, José Luis Pinilla, Rui Moreira, Elba Ochoa |
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Přispěvatelé: | European Commission, Ministerio de Economía y Competitividad (España), CSIC - Instituto de Carboquímica (ICB), Pinilla Ibarz, José Luis, Portugal, António, Suelves Laiglesia, Isabel, Pinilla Ibarz, José Luis [0000-0002-8304-9656], Portugal, António [0000-0002-7520-4767], Suelves Laiglesia, Isabel [0000-0001-8437-2204] |
Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
hydrodeoxygenation
molybdenum carbide catalyst carbon nanofibers supported catalysts 02 engineering and technology lcsh:Chemical technology 010402 general chemistry Molybdenum carbide catalyst 01 natural sciences Catalysis lcsh:Chemistry chemistry.chemical_compound medicine Phenol Organic chemistry lcsh:TP1-1185 Physical and Theoretical Chemistry Demethylation Catechol Hydrodeoxygenation Carbon nanofibers supported catalysts Cresol 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:QD1-999 chemistry Guaiacol 0210 nano-technology Selectivity medicine.drug |
Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Catalysts; Volume 8; Issue 4; Pages: 127 Catalysts, Vol 8, Iss 4, p 127 (2018) |
Popis: | 2 Tablas,7 Figuras, 14 Páginas. In this work, a Mo2C catalyst that was supported on commercial carbon nanofibers (CNF) was synthetized and tested in the hydrodeoxygenation (HDO) of guaiacol. The effects of operating conditions (temperature and pressure) and reaction time (2 and 4 h) on the conversion of guaiacol and products selectivity were studied. The major reaction products were cresol and phenol, followed by xylenols and toluene. The use of more severe operating conditions during the HDO of guaiacol caused a diversification in the reaction pathways, and consequently in the selectivity to products. The formation of phenol may have occurred by demethylation of guaiacol, followed by dehydroxylation of catechol, together with other reaction pathways, including direct guaiacol demethoxylation, and demethylation of cresols. X-ray diffraction (XRD) analysis of spent catalysts did not reveal any significant changes as compared to the fresh catalyst. This work was funded by FEDER and the Spanish Economy and Competitiveness Ministry (MINECO) (ENE2014-52189-C02-01-R and ENE2017-83854-R). Elba Ochoa thanks for the award of her PhD under the frame of this project. J.L.P. thanks MINECO for his Ramon y Cajal research contract (RYC-2013-12494). Rui Moreira is extremely grateful to ICB-CSIC for partially financing living costs during his short term mission. |
Databáze: | OpenAIRE |
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