We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
deNO Performance and Reaction Mechanism of the Di-Air System.
- Authors
Inoue, Mikio; Bisaiji, Yuki; Yoshida, Kohei; Takagi, Nobuyuki; Fukuma, Takao
- Abstract
The detailed reaction mechanism of Di-Air, which showed the unprecedented high deNO performance at high temperature conditions, was studied in this work. Since the Di-Air phenomenon occurs with continuous short pulse injections of hydrocarbons over NSR (NO storage and reduction) catalyst, this study focused on the specific function of HC as an effective reductant for NO reduction reaction. As a first step, the deNO performance was compared with three different reductant gases including CO, H and CH in a modified synthetic gas bench equipped with a gas injector which enables continuous small amount of injections. At inlet gas temperature of 450 °C CH showed the best deNO performance whereas H was the best at 150 °C. Moreover the result of temperature programmed desorption showed that intermediate species represented by -NCO (isocyanates) produced from CH was thermally more stable than that produced from CO. These results confirmed that the injected HC reacts with adsorbed NO on NSR catalyst generating thermally stable intermediates, which could contribute the high deNO performance at high temperature conditions.
- Subjects
NITRIC oxide reduction; CHEMICAL reactions; HYDROCARBONS; CHEMICAL reduction; PERFORMANCE evaluation; GAS injection; INTERMEDIATES (Chemistry); HIGH temperatures; ISOCYANATES
- Publication
Topics in Catalysis, 2013, Vol 56, Issue 1-8, p3
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-013-9919-2