Journal ArticleDOI
Multiple steady states in an isothermal, integral reactor: the catalytic oxidation of carbon monoxide over platinum--alumina
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TLDR
In this article, stable isothermal multiplicities were observed during carbon monoxide oxidation in an integral reactor, filled with alumina supported platinum catalysts, in the conversion-temperature, conversion-inlet carbon dioxide concentration and conversion-mass flow rate domains.Abstract:
Stable isothermal multiplicities were observed during carbon monoxide oxidation in an integral reactor, filled with alumina supported platinum catalysts. The multiplicities were investigated in the conversion-temperature, conversion-inlet carbon monoxide concentration and conversion-mass flow rate domains. The region of multiplicities was found to widen significantly upon catalyst aging which enhanced the pellets' diffusive resistances. Several intermediate stable steady states were found between the highest and lowest steady states, both experimentally and theoretically. All the above phenomena could be well interpreted by the interactions of the kinetics of carbon monoxide oxidation with intrapellet diffusion resistances.read more
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Journal ArticleDOI
CO oxidation on Pt/SiO2 and Pd/SiO2 catalysts: Rapid FTIR transient studies
TL;DR: In this article, a CO-O 2 reaction model consisting of CO islands with highly reactive boundaries was proposed and the reaction occurs preferentially at the periphery of these islands of reactivity.
Journal ArticleDOI
Integrated kinetic modelling and transient FTIR studies of CO oxidation on Pt/SiO2
TL;DR: In this article, the reaction dynamics and multiplicity features of CO oxidation on a Pt/SiO2 catalyst are studied via transient experiments combining Fourier transform infrared spectroscopy (FTIR) with temperature-programmed reaction (TPR) and with concentration-programming reaction (CPR).
Journal ArticleDOI
Steady-State Multiplicity and Superadiabatic Extinction Waves in the Oxidation of CO/H2 Mixtures over a Pt/Al2O3-Coated Monolith
TL;DR: In this article, steady state multiplicity was observed in the catalytic oxidation of mixtures of H 2 and CO over a cordierite monolith wash-coated with Pt/Al 2 O 3.
Journal ArticleDOI
Multiple steady states in reaction controlled surface catalysed reactions
TL;DR: In this article, sufficient conditions for reaction rate multiplicity were obtained for uni-and bimolecular reactions when mo than one vacant site is required for reaction. But the work of Eigenberger is extended and generalized for this situation.
Journal ArticleDOI
Coupled catalytic oscillators: CO oxidation over polycrystalline Pt
TL;DR: In this article, a polycrystalline Pt wire loop was used to measure the rate of CO oxidation in a gas flow reactor over a range of gas temperatures and CO partial pressures, and the reaction rate was measured using a thermocouple spotwelded to the loop.
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