Low temperature vapor phase selective oxidation of ethylbenzene over Ce sub(1-x)Mn sub(x)O sub(2) nanocubes

• Published in: Applied catalysis. A, General Vol. 495; pp. 92 - 103
• Main Authors: Selvamani, A, Selvaraj, M, Krishnan, P Santhana, Gurulakshmi, M, Shanthi, K
• Format: Journal Article
• Language: English
• Published: 05-04-2015
• Subjects: Catalysis; Catalysts; Cerium oxide; Ethylbenzene; Nanostructure; Oxidation; Planes; Selectivity
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2015.02.011

The Ce[sub 1-x]Mn[subx]O[sub 2] nanocatalysts were synthesized by precipitation method using a different precursor salt. The effect of morphology with exclusive (100) plane was examined for the selective oxidation of ethylbenzene into acetophenone with maximum selectivity. The physico-chemical properties of synthesized catalysts were characterized using various techniques. The incorporation of Mn[sup n+] into ceria lattice and the presence of (100) plane were confirmed by XRD and HRTEM analysis. The study concluded that suitable amount of manganese ion content in ceria is essential for selective oxidation of ethyl-benzene at low temperature (463 K). Cubic structure Ce[sub 0.25]Mn[sub 0.75]O[sub 2] nanocatalyst with specific (100) plane is found to be the most suitable catalyst for high conversion and selectivity toward acetophenone under the given reaction conditions.