LaMnCu0.1O3 Perovskite: Towards New Intelligent Nanostrustures
Paper ID : 1509-ICNS
Parvaneh Esmaeilnejad-Ahranjani *1, Abbas Ali Khodadadi2, Yadollah Mortazavi2
1Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
2Catalysis and Nanostructured Materials Research Lab, School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box: 11155/4563, Tehran, Iran
The self-regenerative property of the LaMnCu0.1O3 perovskite structure under the oscillating reduction-oxidation (redox) reaction conditions was investigated. The LaMnO3 and LaMnCu0.1O3 catalysts were prepared via a solution combustion method. The redox reaction conditions were simulated by the replacing of oxygen in the feed gas by nitrogen. The results of X-ray photoelectron spectroscopy (XPS) analysis along with the redox experiments for the LaMnCu0.1O3 catalyst indicate that Cu reversibly reduces to Cu1+ and Cu0 in the reducing atmosphere and re-oxidizes to Cu2+ in the oxidizing atmosphere under the optimum reduction conditions. The enhancements of up to 13% and 10% in CO and C3H8 conversions are observed after exposing of LaMnCu0.1O3 catalyst to the reducing atmosphere for 4 min at 130 oC and 200 oC, respectively. The repeatable enhancement in the activity and regeneration of LaMnCu0.1O3 catalyst over consecutive redox reactions offer the LaMnCu0.1O3 catalyst as an intelligent catalyst.
Perovskite catalyst; Copper; Regenerative; Intelligent; Redox reaction.
Status : Abstract Accepted (Oral Presentation)