Ceo₂ Based Catalysts for the Treatment of Propylene in Motorcycle's Exhaust Gases

Phuong Thi Mai Pham; Thang Le Minh; Tien The Nguyen; Isabel Van Driessche

doi:10.3390/ma7117379

Ceo₂ Based Catalysts for the Treatment of Propylene in Motorcycle's Exhaust Gases

Materials (Basel). 2014 Nov 17;7(11):7379-7397. doi: 10.3390/ma7117379.

Authors

Phuong Thi Mai Pham¹, Thang Le Minh², Tien The Nguyen¹, Isabel Van Driessche³

Affiliations

¹ Department of Organicsynthesis and Petrochemistry, Faculty of Chemical Technology, Hanoi University of Technology, 1 Dai Co Viet, Hanoi 10000, Vietnam.
² Department of Organicsynthesis and Petrochemistry, Faculty of Chemical Technology, Hanoi University of Technology, 1 Dai Co Viet, Hanoi 10000, Vietnam. thang.leminh@hust.edu.vn.
³ Sol-gel Centre for Research on Inorganic Powders and Thin films Synthesis (SCRiPTS), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 291-S3, 9000 Gent, Belgium. isabel.vandriessche@ugent.be.

Abstract

In this work, the catalytic activities of several single metallic oxides were studied for the treatment of propylene, a component in motorcycles' exhaust gases, under oxygen deficient conditions. Amongst them, CeO₂ is one of the materials that exhibit the highest activity for the oxidation of C₃H₆. Therefore, several mixtures of CeO₂ with other oxides (SnO₂, ZrO₂, Co₃O₄) were tested to investigate the changes in catalytic activity (both propylene conversion and CO₂ selectivity). Ce_0.9Zr_0.1O₂, Ce_0.8Zr_0.2O₂ solid solutions and the mixtures of CeO₂ and Co₃O₄ was shown to exhibit the highest propylene conversion and CO₂ selectivity. They also exhibited good activities when tested under oxygen sufficient and excess conditions and with the presence of co-existing gases (CO, H₂O).

Keywords: ceria; cobalt oxide; exhaust gases; oxidation; oxides; propylene; tin oxide; zirconia.