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Anomalous Heat Capacities and Structure Changes in Phase Transition of Silicate Minerals

Research Project

Project/Area Number 07454133
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionYamaguchi University

Principal Investigator

MIZOTA Tadato  Yamaguchi Univ., Fac.of Eng., Professor, 工学部, 教授 (10018666)

Co-Investigator(Kenkyū-buntansha) NAKAYAMA Noriaki  Yamaguchi Univ., Fac.of Eng., Assoc.Prof., 工学部, 助教授 (00164369)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1995: ¥5,900,000 (Direct Cost: ¥5,900,000)
Keywordsakermanite / A-type zeolite / heat capacity / heat capacity anomaly / heat of hydration / heat pump / ゼオライト / ヒート・ポンプ / ルミネッセンス / イオン伝導 / 蛍光材料
Research Abstract

Variously cation-exchanged synthetic A-type zeolites and some natural zeolites have been investigated in hydration mechanisms by using the adiabatic hydration calorimeter method and X-ray powder diffraction. Some zeolite species investigated were found suitable for heat exchange absorbent for a heat pump system of the zeolitewater pair. (2) Precession DSC (TA-Instrument Model 2910) introduced in the present project were used for investigating heat capacity anomalies in silicate and some sulfide minerals. Akermanite heat capacity anomalies were clarified around the incommensurate-norml phase transition, for example. (3) Ionic conductors such as Cu3BiS3 and AgBi3S5 were synthesized, and measured in heat capacities around ionic conduction-transition temperatures to explain transition mechanisms. Single crystals were also synthesized for preparation of precise X-ray structure analysis. (4) Single crystals of a photo-luminescent material, Zn2SiO4, was synthesized and analyzed in the crystal structure to give partial disordering of Zn and Si atoms. A new luminescent material, Ba2 (TiO) [Si2O7], was found and synthesized in dry method.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] T.Mizota: "Hydration enthalpies of sunthetic Na-A, cation exchanged-A and some natural zealites for evalunting as Rant excharege absorbonts" Thermocluim. Acta. 266. 331-341 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 笠井 利浩・溝田 忠人: "アルミナ製錬赤泥の有効利用" 資源と素材. 112. 131-139 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 溝田 忠人: "ゼオライトの水和熱とそのヒートポンプ・畜熱への応用" 熱測定. 24[1]. 79-89 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 溝田 忠人: "ゼオライト-特に畜熱およびヒートポンプへの応用-" エネルギー・資源. 18[5]. 427-433 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 溝田 忠人: "排熱回収のための畜熱・ヒートポンプシステムにおけるゼオライト-水組合せ" 資源と素材. 114. 1-5 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Mizota, et al.: "Hydration enthalpies of synthetic Na-A,cation exchanged-A and some natural zeolites for evaluating as heat exchange absorbents." Thermochim.Acta.266. 331-341 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Kasai and T.Mizota: "Utilization of red mud extracted from alumina production industry" Sigen-to Sozai. 112. 131-139 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Mizota: "Hydration heat of zeolites, and application for heat storage and heat pump" Netsu Sokutei. 24 [2]. 79-89 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Mizota: "Zeolites-with special relation to applications for heat-storage and heat pump." Energy and Resources. 18 [5]. 427-433 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Mizota: "Zeolites-water pair in heat-storage and heat pump system for waste heat recovering." Sigen-to Sozai. 114. 1-5 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Mizota et al.: "Hydration enthalpies of synthetic Na-A,cation exchanged-A and some natural zeolites for evaluating as heat exchange absorbents" Thermochim.Acta. 266. 331-341 (1995)

    • Related Report
      1997 Annual Research Report
  • [Publications] 笠井利浩・溝田忠人: "アルミナ製錬赤泥の有効利用" 資源と素材. 112. 131-139 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 溝田忠人: "ゼオライトの水和熱とそのヒートポンプ・蓄熱への応用" 熱測定. 24[1]. 79-89 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 溝田忠人: "ゼオライト-特に蓄熱およびヒートポンプへの応用-" エネルギー・資源. 18[5]. 427-433 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 溝田忠人: "排熱回収のための蓄熱・ヒートポンプシステムにおけるゼオライト-水組合せ" 資源と素材. 114. 1-5 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 溝田 忠人: "ゼオライトの水和熱と,そのヒートポンプ・蓄熱への応用" 熱測定. 24・1(発表予定). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Tadato Mizota et al.: "Hydration ebthalpies of synthetic Na-A,cation-exchanged-A and some natural zeolites for evaluating as Reat exchange absorbent" Thermochimica Acta. 266. 331-341 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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