CO2 Hydrogenation to Methane over Ni-Catalysts: The Effect of Support and Vanadia Promoting
Loading...
catalysts-11-00433-v3.pdf (2.72 MB)
catalysts-11-00433-s001.pdf (1.17 MB)
Date
2021-03-28
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
License
Abstract
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).
Description
Keywords
Citation
Pieta, I.S.; Lewalska-Graczyk, A.; Kowalik, P.; Antoniak-Jurak, K.; Krysa, M.; Sroka-Bartnicka, A.; Gajek, A.; Lisowski, W.; Mrdenovic, D.; Pieta, P.; et al. CO2 Hydrogenation to Methane over Ni-Catalysts: The Effect of Support and Vanadia Promoting. Catalysts 2021, 11, 433. https://doi.org/10.3390/catal 11040433