Co oxidation on Pd/Al2O3. Transient response and rate enhancement through forced concentration cycling
نویسندگان
چکیده
منابع مشابه
CO OXIDATION ON WA1203 AND Pd/ Al203 TRANSIENT RESPONSE AND CONCENTRATION CYCLING STUDIES
By combining transient response experiments with forced concentration cycling, we were able to determine the reactive surface intermediates responsible for the large rate enhancements observed during periodic operation. According to the IR evidence on Pt the reactive surface species is a CO molecule adsorbed on a platinum atom sharing a chemisorbed oxygen with a neighbor. On Pd two different hi...
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Periodic forcing of chemical turbulence in the catalytic CO oxidation on Pt(110) can induce a period doubling cascade to chaos. Using a forcing frequency near the second harmonic of the system's natural frequency, and carefully increasing the forcing amplitude, the system successively exhibits spiral wave turbulence, resonant pattern formation, and chaotic oscillations. In the latter case, glob...
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Periodically forced oscillatory reaction-diffusion systems may show complex spatiotemporal patterns. At high-frequency resonant forcing, multiple-phase patterns can be found. In the present work, the dynamics of turbulent CO oxidation on Pt(110), forced with the fourth harmonic of the system's natural frequency, is investigated. Experiments result in subharmonic entrainment, where the system lo...
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ژورنال
عنوان ژورنال: Chemical Engineering Science
سال: 1986
ISSN: 0009-2509
DOI: 10.1016/0009-2509(86)87100-7