During high-temperature hydrogenation of an aromatized petroleum feedstock for producing naphthalene in a fluidized bed of microspherical aluminum-cobalt-molybdenum catalyst under a pressure of 20 atm and a temperature of 550°C the activity of the catalyst is maintained at a fairly high level for a short time (about 1 h).
For restoring the activity of a catalyst containing up to 10% coke oxidative regeneration can be carried out under an air pressure of 20 atm, at a temperature of 550°C. The air consumption is 13–15 kg/kg coke. After regeneration the activity of the catalyst is completely restored.
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Krichko, A.A., Lozovoi, A.V. & Skvortsov, D.V. Activity of an aluminum-cobalt-molybdenum catalyst during fluidized bed hydrogenation. Chem Technol Fuels Oils 1, 256–260 (1965). https://doi.org/10.1007/BF00719300
- Oxidative Regeneration
- Petroleum Feedstock