Real-Time Infrared Detection of Cyanide Flip on Silver-Alumina NO x Removal Catalyst

Abstract

A Jump on Catalyst Kinetics A common method for interrogating fast reaction kinetics is to create an abrupt initiation point, and, for reactions catalyzed by metals on oxide supports, one option is to induce a rapid temperature jump, provided that the part of the catalyst undergoing heating can be probed locally. Thibault-Starzyk et al. (p. 1048 ) used femtosecond laser pulses to heat catalysts for nitrogen oxide removal and followed the reaction with Fourier-transform infrared spectroscopy. These catalysts are designed to remove NO in fuel-efficient lean-burn engines through reaction with CO, rather than with hydrocarbons. A cyanide reaction intermediate was identified that moves from the silver nanoparticle to the alumina surface.