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Cation Exchange and Therna Transformation of Smectites

Research Project

Project/Area Number 62540620
Research Category

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

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionOsaka University

Principal Investigator

UNO Yasuaki  Osaka University, College of General Education, Assistant, 教養学部, 助手 (90029702)

Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1989: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1988: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1987: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsSmectite / Montmorillonite / Cation exchange / Layer charge / Quartz solid solution / High temperature products / Cheto-type / Wyoming-type / 交換性陽イオン / 加熱変化 / 高温型石英 / 分散着色法 / 層電荷 / 温度変化法
Research Abstract

Cation exchange properties and thermal transformation were investigated for various smectites in bentonite and acid clay deposits. The results are as follows.
1. Smectites have various chemical compositions from one deposit to others. This variation is considered to be related not only to chemical composition of original clay beds, but also to leaching process by supergene wethering.
2. The upper horizon of Ca-type bentonite deposits is strongly altered to acid clays, compared with Na-type bentonite.
3. The variations of optical property of smectites during temperature variation were determined using microphotometer. Refractive indices of smectite increase remarkably with Al-Fe exchange in octahedral sheet of samples. So microphotometric analysis enable to estimate the layer charge of smectite.
4. Cheto-type smectite having large amount of octahedral charge develops high-quartz like phase during high temperature reaction above 800゚C whereas Wyoming-type smectite having small amount of octahedral charge does not develop such phase. After excess Mg addition treatment, Wyoming-type smectite also develops high-quartz type phase.
5. Chemical analysis of high-quartz type phases was made using analytical electron microscope. The composition of this phase was found not to be pure SiO_2, but instead showed a structural formula close to MgAl_2Si_5O_<14>.

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Yasuaki Uno,Norihiko Kohyama,Mitsuo Sato and Hideo Takeshi: "Formation of Quartz-type Phases During High-temperature Reactions of Montmorillonites" Proceedings of the International Clay Conference,Denver. 66-70 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 宇野泰章・寺西清・礒村公郎: "兵庫県南東部の温泉の化学組成と粘土鉱物の産状" 鉱物学雑誌. 29. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 宇野泰章: "Wyoming州Black Hillsのベントナイト鉱床中のスメクタイトについて" 粘土科学. 29. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 長沢敬之助(分担執筆): "粘土ハンドブック" 技報堂出版, 1354 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 田中元治(分担執筆): "化学大辞典" 東京化学同人, 2800 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yasuaki Uno, Norihiko Kohyama, Mitsuo Sato and Hideo Takeshi: "Formation of Quartz-type Phases During High-temperature Reactions of Montmorillonites" Processings of the International Clay Conference, Denver. 66-70 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yasuaki Uno, Kiyoshi Teranishi and Kimio Isomura: "Mode of Occurrences of Clay minerals and Chemical Compositions of Hot Waters in Southeastern Part of Hyogo Prefecture" Journal of Mineralogical Society of Japan, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yasuaki Uno: "Smectites in Bentonite Deposits, Black Hills, Wyoming" Journal of Clay Science Society of Japan, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Keinosuke Nagasawa (contributor): Handbook of Calys and Caly Minerals. Gihodo, 1354 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Motoharu Tanaka (contributor): Encycropedic Dictionary of Chemistry. Tokyo Kagaku Dojin, 2800 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yasuaki Uno,Norihiko Kohyama,Mitsuo Sato and Hideo Takeshi: "Formation of Quartz-type Phases During High-temperature Reactions of Montmorillonites" Proceedings of the International Clay Conference,Denver. 66-70 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] 宇野泰章,寺西清,礒村公郎: "兵庫県南東部の温泉の化学組成と粘土鉱物の産状" 鉱物学雑誌. 29. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 宇野泰章: "Wyoming洲Black Hillsのベントナイト鉱床中のスメクタイトについて" 粘土科学. 29. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 長沢敬之助(分担執筆): "粘土ハンドブック" 技報堂出版, 1354 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] 田中元治(分担執筆): "化学大辞典" 東京化学同人, 2800 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yasuaki Uno: Proceedings of 8th International Clay Conference. 66-70 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] 宇野泰章: 粘土科学. 29. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 日本粘土学会 編,長沢敬之助: "粘土ハンドブック" 技報堂出版, 1300 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasuaki Uno: Proceedings of 8th International Clay Congerence. 66-70 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 長沢敬之助 他: "日本粘土学会編, 粘土ハンドブック" 技報堂出版, 1300 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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