Catalytic decomposition of N<sub>2</sub>O over Mg-Fe mixed oxides

WANG Jian; FENG Ming; ZHANG Hai-jie; XU Xiu-feng

Volume 42 Issue 12

Dec. 2014

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WANG Jian, FENG Ming, ZHANG Hai-jie, XU Xiu-feng. Catalytic decomposition of N2O over Mg-Fe mixed oxides[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1464-1469.

Citation:

WANG Jian, FENG Ming, ZHANG Hai-jie, XU Xiu-feng. Catalytic decomposition of N₂O over Mg-Fe mixed oxides[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1464-1469.

WANG Jian, FENG Ming, ZHANG Hai-jie, XU Xiu-feng. Catalytic decomposition of N2O over Mg-Fe mixed oxides[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1464-1469.

Citation:

WANG Jian, FENG Ming, ZHANG Hai-jie, XU Xiu-feng. Catalytic decomposition of N₂O over Mg-Fe mixed oxides[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1464-1469.

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Catalytic decomposition of N₂O over Mg-Fe mixed oxides

Institute of Applied Catalysis, Yantai University, Yantai 264005, China

Received Date: 2014-08-15
Rev Recd Date: 2014-10-30
Publish Date: 2014-12-30

Abstract

Abstract

A series of Mg_xFe_1-xFe₂O₄ spinel oxides were prepared and characterized by means of nitrogen physisorption, X-ray diffraction (XRD) and temperature-programmed reduction of hydrogen (H₂-TPR). The effect of composition, calcination temperature, and potassium doping on the catalytic activity of the Mg-Fe mixed oxides in N₂O decomposition was investigated. The results indicated that the Mg_0.6Fe_0.4Fe₂O₄ catalyst calcined at 500 ℃ exhibits highest activity in N₂O decomposition. Unexpectedly, the catalyst activity is depressed by the addition of potassium, as the potassium doping may inhibit the reduction of surface iron oxides and reduce the surface area of K-modified catalysts. Long-term tests at 500 ℃ for 10 h also illustrate that Mg_0.6Fe_0.4Fe₂O₄ is superior to FeO_x catalyst either in the oxygen-alone or in the oxygen-steam concomitant atmosphere.
- N₂O decomposition,
- Mg-Fe mixed oxides,
- K doping,
- Mg_xFe_1-xFe₂O₄,
- catalytic activity

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References(14)

References

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