Fourier Transforms Infrared Spectroscopy Applied in Selective Catalytic Reduction of NO by Acetylene

Abstract

Selective catalytic reduction of NO by hydrocarbons (HC-SCR) is believed to be one of the most promising ways to remove nitric oxide from the exhaust gas of diesel and lean-burn engines. Since HC-SCR was reported individually by Iwamoto and Held groups (Iwamoto et al., 1999; Held et al., 1990), many studies were carried out in this field both on new catalyst research and on reaction mechanism. In these studies, Fourier Transforms Infrared Spectroscopy (FTIR) was extensively used for interpreting the relationship between surface structure and the catalytic performance of the catalysts, especially, for disclosing the reaction mechanism over the catalysts. In this chapter, we summarize the FTIR studies used in the investigation of selective catalytic reduction of NO by acetylene (C2H2-SCR).