Decomposition of Nitric Oxide over Barium Oxide Supported on Magnesium Oxide. 1. Catalytic Results and in Situ Raman Spectroscopic Evidence for a Barium-Nitro Intermediate

摘要

A comparison of spectroscopic and catalytic results indicates that a barium-nitro phase is an intermediate in the catalytic cycle below the fall-off temperature. Nitro species at the surface apparently react with NO to form the decomposition products, N_2 and O_2. This is Believed to be the rate-limiting step in the catalytic cycle. Peroxide ions may be involved in the formation of the Nitro intermediate.