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Peculiar reactions between interstitial compounds of transition metals and hydrogen peroxide and characterization of resultant materials

Research Project

Project/Area Number 09450315
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 工業物理化学
Research InstitutionUniversity of Tokyo

Principal Investigator

KUDO Tetsuichi  Univ.of Tokyo, Inst.of Industrial Science, Professor, 生産技術研究所, 教授 (90205097)

Co-Investigator(Kenkyū-buntansha) HIBINO Mitsuhiro  Univ.of Tokyo, Inst.of Industrial Science, Associate Professor, 生産技術研究所, 助教授 (20270910)
MIZUNO Noritaka  Univ.of.Tokyo, Professor, 工学系研究科, 教授 (50181904)
Project Period (FY) 1997 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥15,700,000 (Direct Cost: ¥15,700,000)
Fiscal Year 2000: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1999: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1998: ¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1997: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsTungsten carbide / Hydrogen peroxide / Proton conductivity / Nanohybrid materials / Malonic acid / Carboxylic acid / Dimethilmalonic acid / alchoxysillilate / アルコキシシリル化 / タングステン酸化物2水和物 / 活性化エネルギー / 層間水 / 水素結合ネットワーク / 過酸化水素水 / 13CNMR / X線光電子分光 / W-OW伸縮振動 / TOF質量分析スペクトル / プロトン導電性 / ペルオキソ錯体 / シュウ酸配位子 / アンモニウム配位子 / 硝酸配位子
Research Abstract

It has been found that some tungsten oxide clusters like peroxo-oxalato-polytungstate formed by a reaction of tungsten carbide with hydrogen peroxide show high proton conductivity. In this fiscal year have studied a methodology to incorporate such a cluster into an organic matrix to enhance chemical stability, and evaluated nanohybrid materials thus obtained as a proton conductive solid electrolyte membrane.
We obtained a homogeneous solution of a peroxotungstate complex by reacting tungsten trioxide monohydrate with hydrogen peroxide at 40℃ for 24 h. A carboxylic acid such as oxalic, malonic or dimethylmalonic acid was added to the solution at the ratio of 0.25-4.0 to tungsten atom, to yield a chelated complex. This solution was added to a methanol solution of alchoxysillilated poly (ethyleneoxide)-600 and polymerized at 60℃ by a sol-gel process. A homogeneous and transparent membrane was formed.
Proton conductivity of those membranes was measured in the temperature range of 25-160℃ under suturated water vapor pressure by the ac impedance method. Conductivity of a typical membrane at 80℃ was 1.4x10^<-2> Scm-1, which was 10 times higher that that of a composite membrane fabricated by simply blending PEO and tungsten trioxide dihydrate as an inorganic high proton conductor. This means that tungstate clusters dispersed at a nano-level homogeneity throughout the PEO-matrix form a percolation path for fast proton transport. Such a situation was also confirmed by vibration spectra and X-ray diffraction. Although conductivity fell with raising temperature above 100℃, it remained at a level of 10^<-4> Scm^<-1> in the range of 140-160℃. Bulky ligands such as dimethylmalonate tended to suppress conductivity fall at high temperature.

Report

(5 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] H.Nakajima, et.al: "Proton Conductivity of Organic/Inorganic Hybrid Polymer Electrolyte Membrane"Proceedings Volume of International Synmposium on Fuel Cells for Vehicles. 190-195 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Tungsten Trioxide Hydrates at Intermediate Temperature"Solid State Ionics. 134. 271-279 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Some Hydrated Compounds at Intermediate Temperature up to 150℃ under High Water Vapor Pressure"Electrochemistry. 69. 2-5 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Kudo: "Proton Conductivity of Tungsten Trioxide Hydrates at Intermediate Temperature"The 7^<th> Asian Conference on Solid State Ionics. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Tanaka, et.al: "Proton Conductivity of Layered Niobium-doped Tungsten Oxide Hydrate System at Intermediate Temperature"The 12^<th> Symposium of the Materials Research Society of Japan, Program and Abstracts. 170-170 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 田中優実 ら: "酸化タングステン水和物のプロトン伝導性-電気自動車用中温作動燃料電池の開発を目指して"生産研究. 52. 523-527 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Nakajima, et.al: "Protonic Conductivity of Organic/Inorganic Hybrid Polymer Electrolyte Membrane"Proceedings volume of international symposium on fuel cells for vehicles. 190-195 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Tungsten Trioxide Hydrates at Intermediate Temperature"Solid State Ionics. 134. 271-279 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Some Hydrated Compounds at Intermediate Temperature up to 150℃ under High Water Vapor Pressure"Electrochemistry. 69. 2-5 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Kudo: "Proton Conductivity of Tungsten Trioxide Hydrates at Intermediate Temperature"The 7^<th> Asian Conference on Solid State Ionics. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Tanaka, et.al: "Proton Conductivity of Layered Niobium-doped Tungsten Oxide Hydrate System at Intermediate Temperature"The 12^<th> Symposium of the Materials Research Society of Japan, Program and Abstracts. 170-170 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Tanaka, et.al: "Proton Conductivity of Tungsten Trioxide Hydrates"Seisan-Kenkyu. 52. 523-527 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Nakajima, et.al: "Protonic Conductivity of Organic/Inorganic Hybrid Polymer Electrolyte Membrane"Proceedings Volume of International Symposium on Fuel Cells for Vehicles. 190-195 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Tungsten Trioxide Hydrates at Intermediate Temperature"Solid State Ionics. 134. 271-279 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.M.LI, et.al: "Proton Conductivity of Some Hydrated Compounds at Intermediate Temperature up to 150℃ under High Water Vapor Pressure"Electrochemistry. 69. 2-5 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Kudo: "Proton conductivity of tungsten trioxide hydrates at intermediate temperature"The 7th Asian Conference on Solid State Ionics. (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Tanaka, et.al: "Proton Conductivity of Layered Niobium-doped Tungsten Oxide Hydrate System at Intermediate Temperature"The 12^<th> Symposium of the Materials Research Society of Japan, Program and Abstracts. 170-170 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H. Nakajima, et al.: "Reaction of Metal, Carbaide, and Nitride of Tungsten with Hydrogen Peroxide Characterized by 183W Nuclear Magnetic Resonance and Raman Spectroscopy"Chemistry of Materials. 11. 691-697 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 李勇明ら: "金属酸化物水和物の中温領域におけるプロトン伝導性"第25回固体イオにクス討論会講演要旨集. (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 日比野光宏ら: "W及びMo系層状酸化物水和物のプロトン伝導性"電気化学会第67回大会学術講演要旨集. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Nakajima, et.al: "Reaction of Nitrides of Molybdenum and Tungsten with Hydrogen Peroxide to Form Inorganic Proton Conductors" Bulletin of the Chemical Society of Japan. 71. 955-960 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] W.Han, et.al: "Synthesis of the Hexagonal Form of Tungsten Trioxide from Peroxopolytungstate via Ammonium Paratungstate Decahydrate" Bulletin of the Chemical Society of Japan. 70. 933-937 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Mizuno, et.al: "Selective Oxidation of Ethane, Propane, and Isobutane Catalyzed by Copper-containing Cs2.5H1.5PVMo11040 under Oxygen-poor Conditions" Journal of Catalysis. 178. 391-394 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Mizuno, et.al: "Copper as and Effective Additive for Enhancement of Catalytic Activity of Cs2.5HI.5PVMo11040 for Selective Oxidation of Lower Alkanes" Chemistry Letters 1998. 621-622 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Abiko, et.al: "Temperature Dependence of the Potential-Composition Profiles of LixMn204 Spinel" Electrochemical and Solid-State Letters. 1 (3). 114-116 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Nakajima, et al: "Reaction of tungsten metal powder with hydrogen peroxide to form peroxo tungstates,an useful precursor of proton conductor" Chemistry Letters. 693-694 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Hibino, et al.: "Proton conductive amorphous thin films of tungsten oxide clusters with acidic ligands" Solid State Ionics. 100. 211-216 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Nakajima, et al.: "Reaction of nitrides of molybdenum and tungsten with hydrogen peroxide to form inorganic proton conductors" Bulletin of the Chemical Society of Japan. (in press).

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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