Catalytic Removal of Soot from Diesel Engines Using CeO2, CeO2-CuO2, and CeO2-Al2O3 Nanocomposites. (2015)

• Record Type: Journal Article
• Authors: Mahofa, Eubert P.; Narsaiah, T. Bala; Chakra, Ch. Shilpa; Kumar, Pramod
• Is Part Of: Materials today. Volume 2:Number 10(2015)Part A
• Page Start: 4451
• Page End: 4456
• Publication Date: 2015
• Subjects: CeO2-CuO2 -- CeO2-Al2O3 -- co-precipitation -- diesel soot oxidation -- catalytic efficiency.; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.10.047
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Nanosized CeO2 -CuO2 (CeCu, 2:1) and CeO2 -Al2 O3 (CeAl, 2:1) were synthesized by co-precipitation from nitrate precursors using ammonia solution (NH4 OH) as the precipitating agent. The catalysts were calcined in air at 500°C for 4 h to evaluate the thermal stability. The techniques including XRD and DLS were used for catalyst characterization. A Thermo gravimetric/Differential Thermal Analyzer (TG/DTA) was used to determine the catalytic efficiency and soot oxidation reactions. Compared with Ce-free sample, Ce-composite increases the redox properties and the amount of surface lattice oxygen species of the catalyst. The Ce-composite samples exhibited excellent soot catalytic combustion performance by decreasing activation energy of soot oxidation.