Synthesis, characterization and catalytic activity for NO-CO reaction of Pd-(La, Sr)2MnO4 system

R. Karita; H. Kusaba; K. Sasaki; Y. Teraoka

doi:10.1016/j.cattod.2006.08.028

Synthesis, characterization and catalytic activity for NO-CO reaction of Pd-(La, Sr)₂MnO₄ system

R. Karita, H. Kusaba, K. Sasaki, Y. Teraoka

Hydrogen Utilization Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

La_xSr_2-xMnO₄ (0 ≤ x ≤ 0.8) oxides were synthesized and single-phase K₂NiF₄-type oxides were obtained in the range of 0.1 ≤ x < 0.5. The catalytic activity of La_xSr_2-xMnO₄ for NO-CO reaction increased with increasing x in the range of solubility limit of La. La_0.5Sr_1.5MnO₄ showed the highest activity among La_xSr_2-xMnO₄ prepared in this study, but its activity was inferior to perovskite-type La_0.5Sr_0.5MnO₃. Among the Pd-loaded catalysts, however, Pd/La_0.8Sr_1.2MnO₄ showed the higher activity and the selectivity to N₂ than Pd/La_0.5Sr_0.5MnO₃ and Pd/γ-Al₂O₃. The excellent catalytic performance of Pd/La_0.2Sr_1.2MnO₄ could be ascribable to the formation of SrPd₃O₄ which was detected by XRD in the catalyst but not in the other two catalysts.

Original language	English
Pages (from-to)	83-87
Number of pages	5
Journal	Catalysis Today
Volume	119
Issue number	1-4
DOIs	https://doi.org/10.1016/j.cattod.2006.08.028
Publication status	Published - Jan 15 2007

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

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10.1016/j.cattod.2006.08.028

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@article{e81a04317c204698999f2b947c65483c,

title = "Synthesis, characterization and catalytic activity for NO-CO reaction of Pd-(La, Sr)2MnO4 system",

abstract = "LaxSr2-xMnO4 (0 ≤ x ≤ 0.8) oxides were synthesized and single-phase K2NiF4-type oxides were obtained in the range of 0.1 ≤ x < 0.5. The catalytic activity of LaxSr2-xMnO4 for NO-CO reaction increased with increasing x in the range of solubility limit of La. La0.5Sr1.5MnO4 showed the highest activity among LaxSr2-xMnO4 prepared in this study, but its activity was inferior to perovskite-type La0.5Sr0.5MnO3. Among the Pd-loaded catalysts, however, Pd/La0.8Sr1.2MnO4 showed the higher activity and the selectivity to N2 than Pd/La0.5Sr0.5MnO3 and Pd/γ-Al2O3. The excellent catalytic performance of Pd/La0.2Sr1.2MnO4 could be ascribable to the formation of SrPd3O4 which was detected by XRD in the catalyst but not in the other two catalysts.",

author = "R. Karita and H. Kusaba and K. Sasaki and Y. Teraoka",

year = "2007",

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doi = "10.1016/j.cattod.2006.08.028",

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T1 - Synthesis, characterization and catalytic activity for NO-CO reaction of Pd-(La, Sr)2MnO4 system

AU - Karita, R.

AU - Kusaba, H.

AU - Sasaki, K.

AU - Teraoka, Y.

PY - 2007/1/15

Y1 - 2007/1/15

N2 - LaxSr2-xMnO4 (0 ≤ x ≤ 0.8) oxides were synthesized and single-phase K2NiF4-type oxides were obtained in the range of 0.1 ≤ x < 0.5. The catalytic activity of LaxSr2-xMnO4 for NO-CO reaction increased with increasing x in the range of solubility limit of La. La0.5Sr1.5MnO4 showed the highest activity among LaxSr2-xMnO4 prepared in this study, but its activity was inferior to perovskite-type La0.5Sr0.5MnO3. Among the Pd-loaded catalysts, however, Pd/La0.8Sr1.2MnO4 showed the higher activity and the selectivity to N2 than Pd/La0.5Sr0.5MnO3 and Pd/γ-Al2O3. The excellent catalytic performance of Pd/La0.2Sr1.2MnO4 could be ascribable to the formation of SrPd3O4 which was detected by XRD in the catalyst but not in the other two catalysts.

AB - LaxSr2-xMnO4 (0 ≤ x ≤ 0.8) oxides were synthesized and single-phase K2NiF4-type oxides were obtained in the range of 0.1 ≤ x < 0.5. The catalytic activity of LaxSr2-xMnO4 for NO-CO reaction increased with increasing x in the range of solubility limit of La. La0.5Sr1.5MnO4 showed the highest activity among LaxSr2-xMnO4 prepared in this study, but its activity was inferior to perovskite-type La0.5Sr0.5MnO3. Among the Pd-loaded catalysts, however, Pd/La0.8Sr1.2MnO4 showed the higher activity and the selectivity to N2 than Pd/La0.5Sr0.5MnO3 and Pd/γ-Al2O3. The excellent catalytic performance of Pd/La0.2Sr1.2MnO4 could be ascribable to the formation of SrPd3O4 which was detected by XRD in the catalyst but not in the other two catalysts.

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JF - Catalysis Today

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ER -

Synthesis, characterization and catalytic activity for NO-CO reaction of Pd-(La, Sr)₂MnO₄ system

Abstract

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