SYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF Zn-HECTORITE

• NAKAKUKI TAKAHITO

  Graduate School of Frontier Materials and Function Engineering, Iwate University

• FUJIMURA KAORI

  Graduate School of Frontier Materials and Function Engineering, Iwate University

• AISAWA SUMIO

  Graduate School of Frontier Materials and Function Engineering, Iwate University

• HIRAHARA HIDETOSHI

  Graduate School of Frontier Materials and Function Engineering, Iwate University

• NARITA EIICHI

  Graduate School of Frontier Materials and Function Engineering, Iwate University

抄録

Both refluxing reaction under atmospheric pressure and hydrothermal reaction underautogenous water vapor pressure of two kinds of starting slurry with the initial molar ratio Na: Zn: Li: Si =0.7: 5.4: 0.6: 8.0 and 1.4: 5.4: 1.2: 8.0 made from Zn-Si homogeneous precipitates, lithium fluoride and sodium hydroxide successfully have yielded Zn-hectorites containing Zn²⁺ instead of Mg²⁺ in the trioctahedral sheets. Zn-hectorites have expansion of the basal spacing (door) by the treatment with ethylene glycol on powder X-ray diffraction (XRD) patterns, and characterized by Zn-O vibration in the around 660-670cm^-1 on fourier transform infrared spectrometer (FT-IR) spectra, peaks assigned to Zn2p on X-ray photoelectron spectrometer (XPS) spectra and thermal dehydroxylationat lower temperature on thermogravimetry and differential thermal analysis (TG-DTA). It hasalso clarified that Zn-hectorite synthesized by hydrothermal reaction under autogenous water vapor pressure is relatively large massive particles and has a larger CEC, although it has lower MB adsorptive ability compared to a commercial Mg-hectorite as reference.

収録刊行物

• Ｃｌａｙ　Ｓｃｉｅｎｃｅ

  Ｃｌａｙ　Ｓｃｉｅｎｃｅ 12 (5), 285-291, 2004

  一般社団法人 日本粘土学会

キーワード

• Zn-hectorite
• Smectite
• Refluxing reaction
• Hydrothermal reaction
• Cation exchange capacity
• Methylene blue adsorptive ability

詳細情報

• CRID: 1390001204113170816
• NII論文ID: 130004307012
• DOI: 10.11362/jcssjclayscience1960.12.285
• ISSN: 21863555
• ISSN: 00098574
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可