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1994 Fiscal Year Final Research Report Summary

Catalytic Activities of Metallic Oxides Clusters in Pore Structures of a Zeolite

Research Project

Project/Area Number 05650785
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 触媒・化学プロセス
Research InstitutionNagasaki University

Principal Investigator

MATSUMOTO Hiroshige  Nagasaki University Faculty of Liberal Arts Professor, 教養部, 教授 (10039787)

Project Period (FY) 1993 – 1994
KeywordsZeolite / Cluster / EXAFS
Research Abstract

Active clusters of palladium oxide has been prepared in the pore structures of Y-zeolite by the R-O treatment consisted of three steps, calcination with O_2, reduction with H_2 and reoxydation with O_2. The catalytic behaviors of the cluster catalyst have been investigated in the partial oxidation of CH_4 into CO and H_2 and in the reduction of NO with C_3H_8 into N_2 and CO_2.
The Pd clusters catalyst showed high activities and excellent selectivities for both reactions. The mechanism of the reactions was investigated by temperature-programd and transient modes. In the main process of the former reaction, CH_4 in the gas phase reacts with oxygen species on the oxidized Pd surface. In the rate determining process of the latter reaction, on the other hand, carbonaceous species on the reduced surface from CH_4 reacts with NO in the gas phase. It was confirmed by EXAFS analyzes, furthermore, that under the operating conditions two kinds of Pd species (Pd and PdO) coexist in the pores and that they can function as catalytic centers via a reversible redox mechanism.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] H.Matsumoto: "Catalitic Behavior of Pd-Zeolite in CH_4to CO and H_2" J.Phys.Chem.98. 5180-5182 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Matsumoto,S.Tanabe: "Reaction Mechanism of CH_4Oxidation over an Activated Pd-Y" J.Chem.Soc.,Faraday Trans. 90. 3001-3006 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Tanabe,H.Matsumoto,: "Catalytic Profile of Pd-Clusters on Zeolite in NO reduction" J.Mater.Sci.Lett.13. 1540-1542 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Matsumoto,S.Tanabe: "Reduction Mechanism of NO with C_3H_8over Pd-Y Zeolite" J.Phus.Chem.99(in press). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本 泰重: "ゼオライト細孔内金属クラスタ上の表面酸素によるメタンの選択的部分酸化反応" 表面. 33(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroshige Matsumoto: "Catalytic Behavior of Palladium-Zeolite in Oxidation of Methane to Carbon Monoxide and Hydrogen." J.Phys.Chem.98, (20). 5180-5182 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshige Matsumoto, Shuji Tanabe: "Reaction Mechanism of Methane Oxidation to Synthesis Gas over an Activated PdY Zeolite." J.Chem.Soc., Faraday Trans.90, (19). 3001-3006 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shuji Tanabe, Hiroshige Matsumoto: "Catalytic Profiles of Palladium Clusters on Zeolite in Reduction of Nitrogen Monoxide with Propane." J.Mater.Sci.Lett.13. 1540-1542 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshige Matsumoto, Shuji Tanabe: "Reduction Mechanism of Nitrogen Monoxide with Propane over Palladium-Y Zeolite." J.Phys.Chem.99(in press). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshige Matsumoto: "(Review) Selective Partial Oxidation of Methane on Palladium Clusters in Zeolite Pores." Hyoumen (Surfaces). 33, (2). 131-138 (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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