Abstract
The development of efficient catalysts for converting CO2 to CO using the reverse water-gas shift reaction is the subject of intensive research. The CO formed can subsequently be used as a raw material for the production of chemicals and fuels in the chemical industry. The aim of this work is to experimentally investigate two catalysts with different proportions of the catalytically active perovskite compound Nd0,6Ca0,4Co0,1Fe0,9O3-δ for their use in the reverse water-gas shift reaction and to compare them with a commercially available nickel catalyst. The experiments were carried out on an existing experimental setup with a fixed-bed reactor in the temperature range from 550 to 950 °C and at pressure levels of 1, 3 and 6 bara. The results obtained were compared with the thermodynamic equilibrium of the reactions. It has been shown that the perovskite catalysts can successfully suppress the undesirable side reaction leading to methane formation, which would be predominant at this temperature according to the chemical equilibrium, even in the low temperature range of 550 °C. The two catalysts investigated exhibit CO selectivities of 100 % at pressures of 1 bara and 3 bara. Even at higher pressures of 6 bara, the CO selectivities are above 90 % and thus significantly higher than the theoretically calculated values. Compared to a commercial nickel catalyst, the perovskite catalysts were also able to achieve higher CO selectivities in the low temperature range.
| Translated title of the contribution | Experimental investigation of perovskite catalysts for the application in the reverse water-gas shift reaction on a laboratory scale |
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| Original language | German |
| Qualification | Dipl.-Ing. |
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| Award date | 19 Dec 2025 |
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| Publication status | Published - 2025 |
Bibliographical note
no embargoKeywords
- Carbon Capture and Utilization
- reverse water-gas shift reaction
- perovskite catalysts
- Power-to-Liquid process