Methanation of CO on Ru/graphitized-carbon catalysts: Effects of the preparation method and the carbon support structure
| Autor: | Damian Wojda, Bogusław Mierzwa, E. Truszkiewicz, Leszek Kępiński, Aleksandra Dębska, Karolina Kowalczyk, Ewa Iwanek |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Fuel Technology Physisorption chemistry X-ray photoelectron spectroscopy Chemical engineering Methanation Chemisorption Crystallite 0210 nano-technology Dispersion (chemistry) Carbon |
| Zdroj: | International Journal of Hydrogen Energy. 45:31985-31999 |
| ISSN: | 0360-3199 |
| Popis: | Two kinds of Ru/C catalysts prepared by two different methods and supported on two graphitized carbons differing in their surface area were studied in CO methanation in the H2-rich gas. The textural parameters of the support materials were characterized by means of N2 physisorption. XRPD, XPS, TEM and CO- chemisorption studies indicate that the application of wet impregnation leads to more homogeneous composition of the Ru/carbon system and higher Ru dispersion than dry impregnation for both supports. The activity of the Ru/carbon samples in CO methanation in a H2-rich gas stream depends on the structure and average size of the active phase crystallites. The combination of wet impregnation and the use of graphitized carbon of appropriate structure in the preparation of the Ru/C catalyst lead to a complete conversion of CO at 240 °C. |
| Databáze: | OpenAIRE |
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