Deactivation of Ni catalyst in three-phase CO 2 methanation
Abstract (englisch):
In three-phase CO2 methanation dibenzyl toluene is used as the liquid phase in a slurry bubble column
reactor. At reactor temperatures (TR) higher than 260 °C deactivation of the Ni/SiO2 catalyst was observed.
After deactivation for 120 h at TR = 320 °C, stationary operation is possible with a loss of catalytic activity
of ≈50%. Based on experimental results, it can be stated that deactivation is caused by decomposition of
dibenzyl toluene at high reactor temperature, resulting in carbon deposition on the catalyst surface.
reactor. At reactor temperatures (TR) higher than 260 °C deactivation of the Ni/SiO2 catalyst was observed.
After deactivation for 120 h at TR = 320 °C, stationary operation is possible with a loss of catalytic activity
of ≈50%. Based on experimental results, it can be stated that deactivation is caused by decomposition of
dibenzyl toluene at high reactor temperature, resulting in carbon deposition on the catalyst surface.
| Zugehörige Institution(en) am KIT | Engler-Bunte-Institut (EBI) Institut für Technische Chemie (ITC) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsdatum | 18.11.2025 |
| Sprache | Englisch |
| Identifikator | ISSN: 2058-9883 KITopen-ID: 1000191369 |
| HGF-Programm | 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle |
| Erschienen in | Reaction Chemistry & Engineering |
| Verlag | Royal Society of Chemistry (RSC) |
| Band | 10 |
| Heft | 12 |
| Seiten | 2825–2834 |
| Vorab online veröffentlicht am | 21.08.2025 |
| Nachgewiesen in | Scopus Web of Science OpenAlex |
| Globale Ziele für nachhaltige Entwicklung |