The Effect of the Ruthenium Crystallite Size on the Activity of Ru/Carbon Systems in CO Methanation
| Autor: | Damian Wojda, Kacper Zegadło, E. Truszkiewicz, Bogusław Mierzwa, Leszek Kępiński |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Ruthenium chemistry.chemical_compound chemistry Methanation Chemisorption Crystallite Texture (crystalline) 0210 nano-technology Carbon Carbon monoxide |
| Zdroj: | Topics in Catalysis. 60:1299-1305 |
| ISSN: | 1572-9028 1022-5528 |
| DOI: | 10.1007/s11244-017-0815-z |
| Popis: | The influence of the ruthenium crystallite size on the catalytic activity of Ru/graphitized carbon systems in carbon monoxide methanation was evaluated. Four graphitized carbon materials differing in their surface area were used as supports for Ru. The average size of Ru crystallites in Ru/C materials was estimated by X-ray powder diffraction, transmission electron microscopy and CO chemisorption. Dispersion of the active phase clearly depends on the carbon texture. The activity tests conducted in H2-rich streams with very low CO concentrations (0.5 vol% CO) have shown that the activity of Ru/carbon catalysts changes with the ruthenium particles size (d). The highest activities were obtained for ruthenium particles in the range 4–8 nm in size. |
| Databáze: | OpenAIRE |
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