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1991 Fiscal Year Final Research Report Summary

Development in Process of Direct Decomposition of Nitrogen Monoxide over Copper Ion-exchanged Zeolite Catalysts

Research Project

Project/Area Number 01850185
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 工業物理化学
Research InstitutionHokkaido University (1990-1991)
University of Miyazaki (1989)

Principal Investigator

IWAMOTO Masakazu  Catalysis Research Center, Hokkaido University, Professor, 触媒化学研究センター, 教授 (10108342)

Co-Investigator(Kenkyū-buntansha) MURAKI Hideaki  TOYOTA Motor Corporation, Project Manager, 主任研究員
SEGAWA Koichi  Chemistry Department, Sophia University, Associate Professor, 理工学部, 助教授 (60053675)
YAHIRO Hidenori  Catalysis Research Center, Hokkaido University, Research Associate, 触媒化学研究センター, 助手 (90200568)
MIZUNO Noritaka  Catalysis Research Center, Hokkaido University, Associate Professor, 触媒化学研究センター, 助教授 (50181904)
Project Period (FY) 1989 – 1991
KeywordsZeolite / Copper Ion Exchange / Nitrogen Monoxide / Direct Decomposition
Research Abstract

Direct decomposition and selective reduction of nitrogen monoxide over copper ion-exchanged zeolite catalysts are proposed as new methods for removal of NO. The copper ion-exchanged ZSM-5 zeolite (Cu-Z) was the most active catalyst for decomposition of NO. The activity of Cu-Z zeolites increased with increase in the exchange level. The zeolites with copper ion-exchange levels of 100% or more, which could be prepared by repeating ion exchange of the ZSM-5 zeolite using aqueous copper (II) acetate solution or addition of ammonia into the aqueous copper (II) nitrate solution, showed significantly high activity even in the presence of oxygen and at high GHSV region. It was clarified concerning Cu-Z, by using IR, ESR, phosphorescence, TPD, and CO adsorption measurements that (1) the Cu^<2+> ions exchanged into zeolite were reduced to Cu^+ and/or Cu^+-Cu^+ through evacuation at elevated temperature, (2) after exposure to oxygen at 773 K and subsequent evacuation, about 40% copper ions in zeo … More lite existed as Cu^+ ions, (3) the NO^- species formed by adsorption of NO on Cu^+ would be an intermediate in the NO decomposition, and (4) redox cycle of Cu^+<@2<@>D2 <@D1>@>D1Cu<@D12+@>D1 in the zeolite is probably a key step to achieve the decomposition reaction. Selective reduction of NO by hydrocarbon in the presence of oxygen was first found by the authors and Cu-Z was remarkably effective for NO removal at temperatures as low as 473-573 K. The activity for this selective reduction in NO+C<@D23@>D2H<@D26@>D2+O<@D22@>D2 system was not poisoned very much by addition of SO<@D22@>D2. The conversion into N<@D22@>D2 was changed to 85% (773 K) in the presence of SO<@D22@>D2, from 100% in the absence of SO<@D22@>D2, which is in contrast with the fact that the catalytic activity for direct decomposition of NO was completely lost on adding the same amount of SO<@D22@>D2. Furthermore, the reduction rate over Cu-Z at 525 K was higher than those over H-zeolite and alumina catalysts at 673 and 773 K, respectively, which have been reported to be active, after findings by the authors. Less

  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] M.Iwamoto: "Excessively Copper Ion-exchanged ZSM-5 Zeolites as Highly Active Catalysts for Direct Decomposition of Nitrogen Monoxide" Chem.Lett.1989. 213-216 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Enhancement of Catolytic Activity of Copper Ion-exchanged Y Type Zeolites for the Decomposition of Nitrogen Monoxide" Bull.Chem.Soc.Jpn.62. 583-584 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Catalytic Decomposition of Nitrogen Monoxide over Copper Ion-exchanged Zeolites.Influence of Zeolite Structure and Aluminum Content on the Catalytic Activity" Stud.Surf.Sci.Catal.54. 121-143 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Novel Preparation Method of Highly Copper Ion-exchanged ZSM-5 Zeolites and Their Catalytic Activities for NO Decomposition" Chem.Lett.1990. 1967-1970 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Copper Ion-exchanged Zeolites as Active Catalysts for Direct Decomposition of Nitrogen Monoxide" Stud.Surf.Sci.Catal.60. 327-334 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岩本 正和: "接触分解法によるNOxの除去" 燃料協会誌. 69. 159-164 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Decomposition on Excessively Copper Ion-exchanged ZSM-5 Zeolites." J.Phys.Chem.95. 3727-3730 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Influence of Sulfur Dioxide on Catalytic Removal of Nitric Oxide over Copper Ion-exchanged ZSM-5 Zeolite." Appl.Catal. 69. L15-L19 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Cu-ZSM-5 Zeotite as Highly Active Catalyst for Removal of Nitrogen Monoxide from Emission of Dissel Engines." Appl.Catal. 70. L1-L5 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Torikai: "Enhancement of Catalytic Activity of Alumina by Copper Addition for Selective Reduction of Nitrogen Monoxide by Ethene in Oxidizing Atmosphere." Catal.Lett.9. 91-96 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Hosose: "A Remarkable lncrement in catalytic Activity of SiO_2-Al_2O_3 by Copper Addition for Selective Reduction of Nitrogen Monoxide by Ethene in Oxidizing Atmosphere." Chem.Lett.1991. 1859-1860 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Removal of Nitrogen Monoxide from Exhaust Gases through Novel Catalytic Processes" Catal.Today.10. 57-71 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Removal of Nitrogen Monoxide over Copper Ion-exchanged Zeolite Catalyst." J.Jpn.Petrol.Inst.34. 375-390 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Copper Ion-exchanged Zeolites as Active Catalysts for Direct Decomposition of Nitrogen Monoxide" Stud.Surf.sci.Catal.60. 327-334 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岩本 正和: "銅ゼオライト触媒による一酸化窒素の除去" 日本化学会誌. 1991. 574-583 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Ion exchange Properties of Copper with Sodium on ZSM-5 Zeolite and Application of Resulting Cu-ZSM-5 as NO Decomposition Catalyst." New Developments in Ion Exchange.Kodansha.Tokyo. 407-412 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Iron Ion-exchanged Zeolite:The Most Active Catalyst at 473K for Selective Reduction of Nitrogen Monexide by Ethene in Oxidizing Atmosphere" Catal.Lett.12. 193-200 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwamoto: "Infrared Study on Surface Reaction of Nitrogen Monoxide Adsorbed on Copper Ion-exchanged ZSM-5 Zeolites" J.Phys.Chem.,.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Iwamoto, H. Yahiro, Y. Mine, and S. Kagawa: "Excessively Copper Ion-exchanged ZSM-5 Zeolites as Highly Active Catalysts for Direct Decomposition of Nitrogen Monoxide" Chem. Lett.213 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, T. Kutsuno, S. Bunyu, and S. Kagawa: "Enhancement of Catalytic Activity of Copper Ion-exchanged Y Type Zeolites for the Decomposition of Nitrogen Monoxide" Bull. Chem. Soc. Jpn.62. 583 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, and K. Tanda: "Catalytic Decomposition of Nitrogen Monoxide over Copper Ion-exchanged Zeolites. Influence of Zeolite Structure and Aluminum Content on the Catalytic Activity" Stud. Surf. Sci. Catal.44. 219 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto: "Catalytic Decomposition of Nitrogen Monoxide" Stud. Surf. Sci. Catal.54. 121 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, Y. Toiokai, T. Yoshioka, and N. Mizuno: "Novel Preparation Method of Highly Copper Ion-exchaged ZSM-5 Zeolites and Their Catalytic Activities for NO Decomposition" Chem. Lett.1967 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto: "Copper Ion-exchanged Zeolites as Active Catalysts for Direct Decomposition of Nitrogen Monoxide" Stud. Surf. Sci. Catal.60. 327 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto: "Removal of Nitrogen Monoxide through Catalytic Decomposition" Nenryokyokai-shi. 69. 159 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, and N. Mizuno: "Removal of Nitrogen Monoxide over Copper Ion-exchanged Zeolite Catalysts" Nippon Kagaku Kaishi. 574 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, S. Shundo, and N, Mizuno: "Influence of Sulfur Dioxide on Catalytic Removal of Nitric Oxide over Copper Ion-exchanged ZSM-5 Zeolite" Appl. Catal.69. L15 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Sato, Y. Yu-u, H. Yahiro, N. Mizuno, and M. Iwamoto: "Cu-ZSM-5 Zeolite as Highly Active Catalyst for Removal of Nitrogen Monoxide from Emission of Diesel Engines" Appl. Catal.70. L1 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, K. Tanda, N. Mizuno, Y. Mine, and S. Kagawa: "Removal of Nitrogen Monoxide through Novel Catalytic Process. 1. Decomposition on Excessively Copper Ion-Exchanged ZSM-5 Zeolites" J. Phys. Chem.95. 3727 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Torikai, H. Yahiro, N. Mizuno, and M. Iwamoto: "Enhancement of Catalytic Activity of Alumina by Copper Addition for Selective Reduction of Nitrogen Monoxide by Ethene in Oxidizing Atmosphere" Catal. Lett.9. 91 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Torikai, H. Yahiro, N. Mizuno, and M. Iwamoto: "A Remarkable Increment in Catalytic Activity of SiO_2-Al_2O_3 by Copper Addition for Selective Reduction of Nitrogen Monoxide by Ethene in Oxidizing Atmosphere" Chem. Lett.1859 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, N. Mizuno, H. Yahiro, and T. Yoshioka: "Ion Exchange Properties of Copper with Sodium on ZSM-5 Zeolite and Application of Resulting Cu-ZSM-5 as NO Decomposition Catalyst" New Developments in Ion Exchange, eds. by M. Abe, T. Kataoka, T. Suzuki, Kodansha. 407 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, N. Mizuno, and H. Yahiro: "Removal of Nitrogen Monoxide over Copper Ion-exchanged Zeolite Catalyst" J. Jpn. Petrol. Inst.34. 375 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto and H. Hamada: "Removal of Nitrogen Monoxide from Exhaust Gases through Novel Catalytic Processes" Catal. Today. 10. 57 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Sato, H. Hirabayashi, H. Yahiro, N. Mizuno, and M. Iwamoto: "Ion Ion-exchanged Zeolite : the Most Active Catalyst at 473 K for Selective Reduction of Nitrogen Monoxide by Ethene in Oxidizing Atmosphere" Catal. Lett.12. 193 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Iwamoto, H. Yahiro, N. Mizuno, Y. Mine, H. Furukawa, and S. Kagawa: "Infrared Study on Surface Reaction of Nitrogen Monoxide Absorbed on Copper Ion-exchanged ZSM-5 Zeolites" J. Phys. Chem.

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

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Published: 1993-03-16  

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