Masaoki Iwasaki

Mechanistic Aspect of NO–NH3–O2 Reacting System

This chapter delineates the mechanistic aspects of the NO–NH3–O2 reacting system, also known as the standard SCR reaction. The standard SCR technology was first developed in the 1970s, and thus has a long history in the research area of catalyst development as well as the associated reaction mechanisms.

Enhanced oxygen storage capacity of cation-ordered cerium–zirconium oxide induced by titanium substitution

Herein, we report on the synthesis of Ce0.5Zr0.5-xTixO2 oxygen storage materials prepared via a solution combustion method. Ce0.5Zr0.4Ti0.1O2 showed an outstanding oxygen storage capacity (1310 μmol-O per g) at 200 °C compared to conventional κ-Ce2Zr2O8 (650 μmol-O per g) due to its cation ordering and the formation of weakly bound oxygen atoms induced by Ti substitution.