Kinetic instabilities in the NO/H_2 reaction on platinum

摘要

We have studied the catalytic reduction of NO with hydrogen on platinum using both field Ion Microscopy (FIM) and Pulsed Field Desorption Mass Spectrometry (PFDMS). Under certain conditions of temperatures and gas pressures this reaction may exhibit non-linear behavior, i.e. hysteresis effects and rate oscillations may occur. According to Voss and Kruse [1], one possibility to explain rapid ignition phenomena in this reaction is based on the autocatalytic process.