Chen Jiafu, MengMing, Lin Peiyan, Li Xingang, Gao Aimei, Yu Shouming. The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides[J]. Chinese Journal of Chemical Physics , 2003, 16(5): 429-432. doi: 10.1088/1674-0068/16/5/429-432
Citation: Chen Jiafu, MengMing, Lin Peiyan, Li Xingang, Gao Aimei, Yu Shouming. The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides[J]. Chinese Journal of Chemical Physics , 2003, 16(5): 429-432. doi: 10.1088/1674-0068/16/5/429-432

The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides

doi: 10.1088/1674-0068/16/5/429-432
Funds:  Project supported by the National Natural Science Foundation of China (29973037) and EYTP
  • Received Date: 2003-01-16
  • The BaCeO3perovskite type samples are prepared by the improved sol-gel method. Besides, the Pt/BaCeO3, Rh/BaCeO3, Pt-Rh/BaCeO3and the Pt/BaCeO3/γ-Al2O3, Rh/BaCeO3/γ-Al2O3, Pt-Rh/BaCeO3/γ-Al2O3are also prepared. The results showthat adding precious metals, the NSC of the BaCeO3samples decrease. The sequence ofNSC is the Pt>Rh>Pt-Rh. Adding onlyγ-Al2O3has no effect on the NSC of the BaCeO3sample. However, the NSC of Pt/BaCeO3/γ-Al2O3sample increases more than three times as much as that of the BaCeO3/γ-Al2O3. The reason of the Nox storage enhancement by adding precious metals is discussed. Combining with XRD analysis, the perovskite type of BaCeO3is the main active phase ofNOxstorage forthe Ba-Ce-Osample. The results also indicate thatthe BaCeO3and Pt/BaCeO3samples keep the ability to resist poison produced by SO2at≤0. 006% SO2, and the Pt/BaCeO3/γ-Al2O3 sample possesses not only high capacity of NOxstorage but also high ability to resist poison produced by SO2.
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The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides

doi: 10.1088/1674-0068/16/5/429-432
Funds:  Project supported by the National Natural Science Foundation of China (29973037) and EYTP

Abstract: The BaCeO3perovskite type samples are prepared by the improved sol-gel method. Besides, the Pt/BaCeO3, Rh/BaCeO3, Pt-Rh/BaCeO3and the Pt/BaCeO3/γ-Al2O3, Rh/BaCeO3/γ-Al2O3, Pt-Rh/BaCeO3/γ-Al2O3are also prepared. The results showthat adding precious metals, the NSC of the BaCeO3samples decrease. The sequence ofNSC is the Pt>Rh>Pt-Rh. Adding onlyγ-Al2O3has no effect on the NSC of the BaCeO3sample. However, the NSC of Pt/BaCeO3/γ-Al2O3sample increases more than three times as much as that of the BaCeO3/γ-Al2O3. The reason of the Nox storage enhancement by adding precious metals is discussed. Combining with XRD analysis, the perovskite type of BaCeO3is the main active phase ofNOxstorage forthe Ba-Ce-Osample. The results also indicate thatthe BaCeO3and Pt/BaCeO3samples keep the ability to resist poison produced by SO2at≤0. 006% SO2, and the Pt/BaCeO3/γ-Al2O3 sample possesses not only high capacity of NOxstorage but also high ability to resist poison produced by SO2.

Chen Jiafu, MengMing, Lin Peiyan, Li Xingang, Gao Aimei, Yu Shouming. The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides[J]. Chinese Journal of Chemical Physics , 2003, 16(5): 429-432. doi: 10.1088/1674-0068/16/5/429-432
Citation: Chen Jiafu, MengMing, Lin Peiyan, Li Xingang, Gao Aimei, Yu Shouming. The NOx Storage and Resistance of SO2 Poison on the BaCeO3 Perovskite Type Oxides[J]. Chinese Journal of Chemical Physics , 2003, 16(5): 429-432. doi: 10.1088/1674-0068/16/5/429-432

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