Catalytic combustion of toluene over the Ce-based composite oxides prepared by hard-template methods

LAN Hai; ZHOU Gui-lin; YANG Xing-hui; REN Yuan-yuan; XIE Hong-mei

Volume 43 Issue 04

Apr. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(04): 483-489

LAN Hai, ZHOU Gui-lin, YANG Xing-hui, REN Yuan-yuan, XIE Hong-mei. Catalytic combustion of toluene over the Ce-based composite oxides prepared by hard-template methods[J]. Journal of Fuel Chemistry and Technology, 2015, 43(04): 483-489.

Citation:

LAN Hai, ZHOU Gui-lin, YANG Xing-hui, REN Yuan-yuan, XIE Hong-mei. Catalytic combustion of toluene over the Ce-based composite oxides prepared by hard-template methods[J]. Journal of Fuel Chemistry and Technology, 2015, 43(04): 483-489.

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Catalytic combustion of toluene over the Ce-based composite oxides prepared by hard-template methods

Chongqing Key Laboratory of Catalysis & Functional Organic Molecules, Department of Materials Science Engineering, Chongqing Technology and Business University, Chongqing 400067, China

Received Date: 2014-11-05
Publish Date: 2015-04-30

Abstract

Abstract

Ce-based composite oxides (CeM-HT, M=Cu, Mn, Fe, and Co) were prepared by the hard-template method and characterized by XRD, O₂-TPD, nitrogen physisorption, and H₂-TPR; their catalytic performance in toluene combustion was investigated. The results show that CuO, MnO_x, FeO_x, and Co₃O₄ can be well dissolved into the CeO₂ lattice, forming Ce-O-Cu, Ce-O-Mn, Ce-O-Fe, and Ce-O-Co solid solutions, respectively. The CeO₂ lattice is significantly distorted by the incorporation of Cu and Mn ions, but less affected by the doping of Fe and Co ions. Moreover, a little amount of Co₃O₄ crystal exists in the CeCo-HT oxide catalyst. The Ce-based composite oxides exhibit excellent catalytic performance in toluene combustion; the toluene conversions over CeFe-HT, CeCo-HT, CeMn-HT, and CeCu-HT oxide catalysts reach 93.7% at 300 ℃, 95.0% at 270 ℃, 96.5% at 260 ℃, and 95.0% at 230 ℃, respectively. The catalytic activity of the Ce-based composite oxides is closely related to their oxygen desorption amount, oxygen storage capacity, and reducibility, following the order of CeCu-HT > CeMn-HT > CeCo-HT > CeFe-HT.
- hard-template method,
- Ce-based composite oxide,
- solid solution,
- toluene,
- catalytic combustion

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References(19)

References

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