Abstract
A transient technique integrating FTIR spectroscopy with Temperature-Programmed Reaction (TPR) and Concentration-Programmed Reaction (CPR) using a small-volume infrared reactor, has been developed. Studies of CO oxidation on a Pt SiO 2 catalyst using these methods, have shown the occurrence of remarkable surface temperature behavior in regions of ignition and quenching. Extensive documentation of linear-bonded CO behavior is presented and the relevance of a Langmuir-Hinshelwood and other reaction models is discussed. Two different energy transport mechanisms are described which might lead to the observed catalyst temperature excursions.
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