Gas feed composition modulation in phenol CWAO over active carbon

The long-term stability of active carbon in the CWAO of phenol was investigated in a fixed-bed reactor at steady state operation and different oxygen partial pressures, temperatures, phenol inlet concentrations and gas–liquid flow modes. To further improve the catalyst stability, gas feed compositio...

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Bibliographic Details
Published in:Chemical engineering science 2007-09, Vol.62 (18), p.5564-5566
Main Authors: Larruy, B., Ayude, A., Font, J., Fortuny, A., Bengoa, C., Fabregat, A., Stüber, F.
Format: Article
Language:English
Subjects:
Active carbon
Adsorption
Applied sciences
Catalysis
Catalyst deactivation
Catalytic reactions
Chemical engineering
Chemistry
Environment
Exact sciences and technology
General and physical chemistry
Hydrodynamics of contact apparatus
Mutiphase reactors
Periodic operation
Phenol oxidation
Reactors
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:The long-term stability of active carbon in the CWAO of phenol was investigated in a fixed-bed reactor at steady state operation and different oxygen partial pressures, temperatures, phenol inlet concentrations and gas–liquid flow modes. To further improve the catalyst stability, gas feed composition modulation (air/N 2) was tested in the slow mode (large period lengths) to establish in situ oxidation–adsorption cycles. The unsteady operation significantly reduced the active carbon burn-off and performed a higher long-term conversion of phenol.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2007.01.079