Nanostructured carbon material effect on the synthesis of carbon-supported molybdenum carbide catalysts for guaiacol hydrodeoxygenation
| Autor: | Daniel Torres, Elba Ochoa, Isabel Suelves, José Luis Pinilla |
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| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Torres Gamarra, Daniel [0000-0002-7843-6141], Pinilla Ibarz, José Luis [0000-0002-8304-9656], Suelves Laiglesia, Isabel [0000-0001-8437-2204], Torres Gamarra, Daniel, Pinilla Ibarz, José Luis, Suelves Laiglesia, Isabel |
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Control and Optimization Materials science hydrodeoxygenation of guaiacol Oxide Energy Engineering and Power Technology chemistry.chemical_element Mo2C catalysts 02 engineering and technology Carbon nanotube 010402 general chemistry lcsh:Technology 01 natural sciences Catalysis law.invention chemistry.chemical_compound law medicine Electrical and Electronic Engineering Engineering (miscellaneous) Hydrodeoxygenation of guaiacol lcsh:T Renewable Energy Sustainability and the Environment Carbon nanofiber 021001 nanoscience & nanotechnology 0104 chemical sciences Nanostructured carbon materials Chemical engineering chemistry Carbothermal hydrogen reduction carbothermal hydrogen reduction mo2c catalysts 0210 nano-technology Carbon Hydrodeoxygenation nanostructured carbon materials Energy (miscellaneous) Activated carbon medicine.drug |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Energies, Vol 13, Iss 5, p 1189 (2020) Energies Volume 13 Issue 5 Pages: 1189 |
| Popis: | © 2020 by the authors.-- 9 figures, 3 tables.-- Supplementary material available. The impact of using different nanostructured carbon materials (carbon nanofibers, carbon nanotubes, graphene oxide and activated carbon) as a support for Mo2C-based catalysts on the hydrodeoxygenation (HDO) of guaiacol was studied. To optimise the catalyst preparation by carbothermal hydrogen reduction (CHR), a thermogravimetric study was conducted to select the optimum CHR temperature for each carbon material, considering both the crystal size of the resulting β-Mo2C particles and the extent of the support gasification. Subsequently, catalysts were prepared in a fixed bed reactor at the optimum temperature. Catalyst characterization evidenced the differences in the catalyst morphology as compared to those prepared in the thermogravimetric study. The HDO results demonstrated that the carbon nanofiber-based catalyst was the one with the best catalytic performance. This behaviour was attributed to the high thermal stability of this support, which prevented its gasification and promoted a good evolution of the crystal size of Mo species. This catalyst exhibited well-dispersed β-Mo2C nanoparticles of ca. 11 nm. On the contrary, the other supports suffered from severe gasification (60–70% wt. loss), which resulted in poorer HDO efficiency catalysts regardless of the β-Mo2C crystal size. This exhibited the importance of the carbon support stability in Mo2C-based catalysts prepared by CHR. This work was funded by European Regional Development Fund and the Spanish Economy and Competitiveness Ministry (MINECO) (ENE2017-83854-R). |
| Databáze: | OpenAIRE |
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