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Amplification of Periodic Temperature Disturbances in a Packed‐Bed Reactor: CO Oxidation over a CuO/Al 2 O 3 Catalyst
Author(s) -
NaRag Duangkamol,
Jaree Attasak,
Hudgins Robert R.,
Budman Hector M.,
Silveston Peter L.,
Menzinger Michael
Publication year - 2003
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450810610
Subject(s) - catalysis , packed bed , amplitude , perturbation (astronomy) , chemistry , analytical chemistry (journal) , materials science , chromatography , physics , organic chemistry , optics , quantum mechanics
Amplification of periodic variations of input temperature in a product‐inhibited reaction — CO oxidation over CuO‐γ‐Al 2 O 3 — was investigated experimentally in an insulated packed‐bed reactor. At steady state the temperature profile was elongated compared with that of a reactant‐inhibited CO oxidation over Pt/Al 2 O 3 , studied elsewhere. Under periodic operation, amplitudes of the resulting travelling temperature waves, monitored downstream from the reaction front, were amplified to a greater extent than those in the reactant‐inhibited CO oxidation over Pt/Al 2 O 3 . The magnitude of the amplification depended on the perturbation frequency and showed resonance behaviour. The magnitude decreased monotonically with increasing perturbation amplitude.