Effects of ceria content on physicochemical and catalytic properties of nanostructured ceo2/al2o3 used for catalytic removal of toluene from waste gas streams

Saeed Saedy1,2, Mohammad Haghighi1,2, Esmaeil Fatehifar1,3, Zahra Abbasi1,2

1 Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran
2 Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran
3 Environmental Engineering Research Center (EERC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran

Abstract


The effect of ceria content on the physicochemical properties and catalytic performance of nanostructured CeO2/Al2O3 for removal of toluene from waste gas stream was studied. The properties of the catalysts were addressed using XRD, FESEM, BET, TPR-H2 and FTIR techniques. XRD patterns confirmed the formation of CeO2 with average crystallite size of 7.8-8.7 nm. FESEM images confirmed the presence of fine particles between 25.2-189.1 nm. BET results showed that nanostructured CeO2/Al2O3 had high surface area. TPR patterns indicated more reducibility for higher ceria loadings. CeO2(30%)/Al2O3 showed almost the same activity as pure ceria, 100%. The synthesized catalysts showed good stability during reaction condition.

Keywords


CeO2/Al2O3; catalytic oxidation; nanostructure; volatile organic compounds; toluene

Full Text:

 Subscribers Only