Carbon support hydrogenation in Pd/C catalysts during reductive thermal treatment
| Autor: | Mikhail V. Trenikhin, Yury V. Surovikin, Kristina N. Iost, Vadim A. Borisov, Victor L. Temerev, Dmitry A. Shlyapin, Aleksey B. Arbuzov, Polina E. Pavluchenko, Pavel G. Tsyrulnikov, Aleksey A. Vedyagin |
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| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Renewable Energy Sustainability and the Environment Chemistry Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Fuel Technology Adsorption Specific surface area 0210 nano-technology Inert gas Carbon Palladium |
| Zdroj: | International Journal of Hydrogen Energy. 43:17656-17663 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2018.07.182 |
| Popis: | The resistance of the Pd/C samples towards hydrogenation of the carbon support was studied in the temperature-programmed and isothermal regimes. Carbonaceous graphite-like material Sibunit was used as a carbon support. Pristine Sibunit was additionally graphitized via high temperature treatment (1900 °C) in an inert atmosphere. Both initial and graphitized supports were subjected to oxidative treatment in order to increase the amount of surface functional oxygen-containing groups. Palladium (1 wt%) was supported using an aqueous solution of H2PdCl4. All the samples were characterized by a low-temperature adsorption of nitrogen, transmission electron microscopy, and Raman spectroscopy. The graphitization procedure was found to decrease significantly the specific surface area of the support, while the oxidative treatment affects this parameter negligibly. Testing the Pd-containing samples in a hydrogen flow revealed the following order in accordance with amount of methane released: Pd/iSib » Pd/iSib-ox > Pd/gSib > Pd/gSib-ox. |
| Databáze: | OpenAIRE |
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