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Catalysis by Rare Earth Metals

Research Project

Project/Area Number 03805073
Research Category

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

Allocation TypeSingle-year Grants
Research Field 工業物理化学・複合材料
Research InstitutionYamaguchi University

Principal Investigator

IMAMURA Hayao  Yamaguchi Univ.Dept.of Adv.Mat.Sci.& Eng.Associate Professor, 工学部, 助教授 (60136166)

Co-Investigator(Kenkyū-buntansha) SAKATA Yoshihisa  Yamaguchi Univ.Dept.of Adv.Mat.Sci.& Eng. Research Assistant, 工学部, 助手 (40211263)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1992: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsCatalysis / Rare Earth / Lanthanide / Europium / Ytterbium / Bimetallic Catalyst / Cycloalkane / Olefin / レアア-ス / サマリウム / 金属蒸着法 / 水素化反応
Research Abstract

In recent years there has been a growing interest in the surface properties of lanthanide-3d transition metal intermetallic compounds and lanthanide metal overlayers from the point of view of heterogeneous catalysis. It is known that Eu and Yb among lanthanide metals readily dissolve in liquid ammonia to yield homogeneous solution containing the solvated electrons. When transition metal(Co,Ni,Cu and Ag)powders are added to this solution,the metal powders react with the lanthanide metals dissolved in liquid ammonia to form specific bimetallic catalysts of layered lanthanide-transition metals. We have developed methods for the preparation of this type of novel binary compounds and have demonstrated that they can effectively catalyze various reactions.
The catalysts were characterized by the hydrogenolysis of ethane,the hydrogenation of ethene and buta-1,3-diene, and the hydrogen chemisorption. The rate of hydrogenolysis decreased markedly when Yb or Eu was introduced onto the Co and Ni su … More rface,whereas the hydrogenation activity showed a tendency to increase,in particular for the samples with high loadings of lanthanide. Co and Ni were active for the hydrogenolysis and hydrogenation under the reaction conditions,while the lanthanide metals showed negligible activity.An analysis of the decrease in the rate of hydrogenolysis with increasing lanthanide loading suggested a decrease in concentration of surface Co or Ni available for structure-sensitive reactions caused by lanthanide coverage. For the hydrogenation of ethene and buta-1,3-diene the surface was gradually covered with the lanthanide metals and simultaneously considerable interactions occurred to produce active centers for the hydrogenation;the presence of lanthanide metals on Co or Ni strongly influenced the state of adsorption of hydrogen in the subsequent activation processes,resulting in enhanced capacity of this surface to dissociate hydrogen. The effects of a lanthanide metal overlayer on the selectivity for buta-1,3-diene hydrogenation on a 3d transition metal surface were also discussed. Less

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (38 results)

All Other

All Publications (38 results)

  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide(Eu and Yb)-Containing Bimetallic Catalysts,in Catalytic Science and Technology." S.Yoshida,N.Takezawa and T.Ono,Eds.,Kodansha. 1. 279-284 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Conversion of Ethylene to Propylene over Novel Lanthanide Catalysts Deposited from Solution of Eu or Yb in Liquid Ammonia." Proc.of 2nd Int.Conf.on Rare Earth Development and Applications,International Academic Publishers,. 842-844 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Sakata: "Hydrogen Species Adsorbed on an Sm_2O_3 Catalyst Observed by Infrared Spectroscopy." Chem.Lett.349-350 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 今村 速夫: "希土類バイメタリック触媒の触媒特性" 触媒. 33. 177- (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide(Eu and Yb)-Dosed Oxides." J.Mol.Catal.66. L33-37 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Effects of Lanthanide Metals in Eu-Ni and Yb-Ni Bimetallic Catalysts." J.Chem.Soc.,Faraday Trans.87. 2805-2809 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Ethylene Hydrogenation over Lanthanide-Doped Cu and Ag Catalyst Systems(Eu-Cu,Yb-Cu,Eu-Ag and Yb-Ag)." J.Mol.Catal.69. 271-280 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Selective Hydrogenation of Conjugated and Nonconjugated Double Bonds Using Lanthanides Immobilized on SiO_2." J.Chem.Soc.,Chem.Commun.1527-1528 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide Metals on Silica." Bull.Chem.Soc.Jpn.65. 244-249 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Infrared Spectra of Carbon Monoxide Adsorbed on SiO_2-Supported Lanthanide-Ni Bimetallic Catalysts and Their Catalytic Properties." J.Catal.136. 271-274 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Dehydrogenation of Cyclohexane on Lanthanide-Nickel Bimetallic Catalysts(Eu-Ni and Yb-Ni)." J.Chem.Soc.,Faraday Trans.88. 1577-1581 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Properties and Reactivity of Lanthanide(Eu and Yb)Catalysts Dispersed on SiO_2." J.Chem.Soc.,Faraday Trans.88. 2251-2256 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Effects of Lanthanide in Lanthanide-Cobalt Bimetallic Catalyst Systems." J.Mol.Catal.77. 333-342 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Sakata: "Photocatalytic Activity of Titanium Dioxide Loaded with Cerium Oxide." Chem.Lett.391-394 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide(Eu and Yb)-Containing Bimetallic Catalysts." Catalytic Science and Technology Vol.1,S.Yoshida,N.Takezawa and T.Ono,Eds.,Kodansha,Tokyo. 279-284 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Conversion of Ethylene to Propylene over Novel Lanthanide Catalysts Deposited from Solution of Eu or Yb in Liquid Ammonia." Proc.of 2nd Int.Conf.on Rare Earth Development and Applications,International Academic Publishers,Beijing,China. 842-844 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Sakata: "Hydrogen Species Adsorbed on an Sm_2O_3 Catalyst Observed by Infrared Spectroscopy." Chem.Lett. 349-350 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 33. 177 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide(Eu and Yb)-Dosed Oxides." J.Mol.Catal. 66. L33-37 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Effects of Lanthanide Metals in Eu-Ni and Yb-Ni Bimetallic Catalysts." J.Chem.Soc.,Faraday Trans. 87. 2805-2809 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Ethylene Hydrogenation over Lanthanide-Doped Cu and Ag Catalyst Systems(Eu-Cu,Yb-Cu,Eu-Ag and Yb-Ag)." J.Mol.Catal. 69. 271-280 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Selective Hydrogenation of Conjugated and Nonconjugated Double Bonds Using Lanthanides Immobilized on SiO_2." J.Chem.Soc.,Chem.Commun. 1527-1528 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Properties of Lanthanide Metals on Silica." Bull.Chem.Soc.Jpn. 65. 244-249 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Infrared Spectra of Carbon Monoxide Adsorbed on SiO_2-Supported Lanthanide-Ni Bimetallic Catalysts and Their Catalytic Properties." J.Catal. 136. 271-274 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Dehydrogenation of Cyclohexane on Lanthanide-Nickel Bimetallic Catalysts(Eu-Ni and Yb-Ni)." J.Chem.Soc.,Faraday Trans. 88. 1577-1581 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Properties and Reactivity of Lanthanide(Eu and Yb)Catalysts Dispersed on SiO_2." J.Chem.Soc.,Faraday Trans. 88. 2251-2256 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Imamura: "Catalytic Effects of Lanthanide in Lanthanide-Cobalt Bimetallic Catalyst Systems." J.Mol.Catal. 77. 333-342 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Sakata: "Photocatalytic Activity of Titanium Dioxide Loaded with Cerium Oxide." Chem.Lett. 391-394 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H. Imamura: "Infrared Spectra of Carbon Monoxide Adsorbed on SiO_2-Supported Lanthanide-Ni Bimetallic Catalysts and Their Catalyltic Properties." J. Catal.136. 271-274 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H. Imamura: "Dehydrogenation of Cyclohexane on Lanthanide-Nickel Bimetallic Catalysts (Eu-Ni and Yb-Ni)." J. Chem. Soc., Faraday Trans.88. 1577-1581 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H. Imamura: "Properties and Reactivity of Lanthanide (Eu and Yb) Catalysts Dispersed on SiO_2." J. Chem. Soc., Faraday Trans.88. 2251-2256 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H. Imamura: "Catalytic Effects of Lanthanide in Lanthanide-Cobalt Bimetallic Catalyst Systems." J. Mol. Catal.77. 333-342 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 今村 速夫,吉信 光敏,吉村 敬治,酒多 喜久,土屋 晉: "希土類バイメタリック触媒の触媒特性" 触媒. 33. 177 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Imamura,H.Yoshimochi and Y.Harada: "Catalytic Properties of Lanthanide (Eu and Yb)ーDosed Oxides" J.Mol.Catal.66. L33-37 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Imamura,K.Yoshimura,S.Hiranaka,Y.Sakata and S.Tsuchiya: "Effects of Lanthanide Metals in EuーNi and YbーNi Bimetallic Catalysts" J.Chem.Soc.,Faraday Trans.87. 2805-2809 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Imamura,M.Yoshinobu,T.Mihara,Y.Sakata and S.Tsuchiya: "Ethylene Hydrogenation over LanthanideーDoped Cu and Ag Catalyst Systems (EuーCu,YbーCu,EuーAg and YbーAg)" J.Mol.Catal.69. 271-280 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Imamura,T.Konishi,Y.Sakata and S.Tsuchiya: "Selective Hydrogenation of Conjugated and Nonconjugated Double Bonds Using Lanthanides Immobilized on SiO_2" J.Chem.Soc.,Chem.Commun.1527-1528 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Imamura,T.Konishi,Y.Tokunaga,Y.Sakata and S.Tsuchiya: "Catalytic Properties of Lanthanide Metals on Silica" Bull.Chem.Soc.Jpn.65. 244-249 (1992)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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