CO2 Hydrogenation to Methane over Ni-Catalysts: The Effect of Support and Vanadia Promoting
| Autor: | Arkadiusz Gajek, Wojciech Lisowski, Dusan Mrdenovic, Izabela S. Pieta, Ewa M. Serwicka, Paweł Kowalik, Agnieszka Lewalska-Graczyk, Robert Nowakowski, Agata Lew, Mikolaj Krysa, Anna Sroka-Bartnicka, Piotr Pieta, Katarzyna Antoniak-Jurak |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
vanadium oxide catalysts 02 engineering and technology lcsh:Chemical technology 010402 general chemistry 01 natural sciences 7. Clean energy Catalysis Methane lcsh:Chemistry Metal chemistry.chemical_compound X-ray photoelectron spectroscopy Methanation lcsh:TP1-1185 Ni-catalyst Physical and Theoretical Chemistry 021001 nanoscience & nanotechnology SMR catalysts 0104 chemical sciences 3. Good health lcsh:QD1-999 chemistry Chemical engineering visual_art Yield (chemistry) visual_art.visual_art_medium methanation 0210 nano-technology Selectivity CO2 hydrogenation Space velocity |
| Zdroj: | Catalysts Volume 11 Issue 4 Catalysts, Vol 11, Iss 433, p 433 (2021) |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal11040433 |
| Popis: | Within the Waste2Fuel project, innovative, high-performance, and cost-effective fuel production methods are developed to target the “closed carbon cycle”. The catalysts supported on different metal oxides were characterized by XRD, XPS, Raman, UV-Vis, temperature-programmed techniques then, they were tested in CO2 hydrogenation at 1 bar. Moreover, the V2O5 promotion was studied for Ni/Al2O3 catalyst. The precisely designed hydrotalcite-derived catalyst and vanadia-promoted Ni-catalysts deliver exceptional conversions for the studied processes, presenting high durability and selectivity, outperforming the best-known catalysts. The equilibrium conversion was reached at temperatures around 623 K, with the primary product of reaction CH4 (> 97% CH4 yield). Although the Ni loading in hydrotalcite-derived NiWP is lower by more than 40%, compared to reference NiR catalyst and available commercial samples, the activity increases for this sample, reaching almost equilibrium values (GHSV = 1.2 × 104 h–1, 1 atm, and 293 K). |
| Databáze: | OpenAIRE |
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