| Titre : | Nanocrystalline la1 – xK x FeO3 (x = 0 – 0.4) oxides for catalytic removal of soot from practical diesel exhaust emission (2011) |
| Auteurs : | Xiaoxiao Meng, Auteur ; Fenglin He, Auteur ; Xiangqian Shen, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 19, Octobre 2011) |
| Article en page(s) : | pp. 11037-11042 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Nanocrystalline |
| Résumé : | The nanocrystalline, porous, perovskite La1–xK x FeO3 (x = 0–0.4) powders and La0.8K0.2FeO3-coated honeycomb ceramic device were prepared by the citrate-gel process and the citrate-gel assisted dip-coating method at a low calcination temperature of 600̊C for 6 h, respectively. All the perovskite powders can effectively catalyze the soot combustion and among them the La0.8K0.2FeO3 catalyst exhibits the highest catalytic activity for the soot combustion, with a lowest T50 (350 °C) owing to a high specific surface area and large pore sizes. This optimized La0.8K0.2FeO3 catalyst is proved by the bench test for the practical exhaust gas emission and the La0.8K0.2FeO3-coated honeycomb ceramic device has a effective capture of particulate matter from the exhaust emission at a low temperature and starts to efficiently catalyze oxidization reactions of the particulate matter at the temperature around 245 °C (T 20), leads the smoke opacity near zero at the operational temperature of 400 °C. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://journals1.scholarsportal.info/details.xqy?uri=/08885885/v50i0019/11037_nlxf0osfpdee.xml |
