Temporal analysis of products (TAP) study on low temperature carbon monoxide oxidation on supported Au catalysts

TAP (temporal analysis of products) technique was used to clarify the controversial mechanism for low-temperature CO oxidation on supported An catalysts involving unidentified moisture effects on the performances. The unique TAP transient technique, along the use of a specially prepared, highly active Au/Ti(OH)(4)* catalyst, provided the information and characterization of each elementary step involving weak and reversible CO adsorption, strong and molecular O-2 adsorption, and their surface reaction, which are suppressed by the coexistence of water vapor.