Preparation and properties of a basic lead calcium carbonate-swelling mica complex

Motoki Uehara, Atsushi Yamazaki, Sadao Tsutsumi

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    A basic lead calcium carbonate-swelling mica complex (surite-like material, SLM), Pb2.11Ca0.83Na0.12(CO3) 2.08 (OH)1.11 (Si3.95Al0.04)Mg2.66O10 (F,OH)2·0.06H2O, was prepared by treating a swelling mica hydrothermally at 250°C with lead powder, dry ice and calcium nitrate solution. The product showed the morphology of thin hexagonal plates of 4 μm in diameter that have no swelling characteristics. Its symmetry is monoclinic; a=0.5204(3) nm, b=0.9080(9) nm, c=1.6231(8) nm, β=90.20(10)°. The X-ray powder diffraction pattern is characterized by a basal reflection of 1.62 nm and its subsequent integer reflections up to the 14th order. The chemical analysis and one dimensional Fourier synthesis results proved that SLM has an interlayer structure similar to that of natural surite, while the octahedral cation in the 2 : 1 layer consists of only Mg unlike the 2:1 layer of natural surite. The thermal behavior of SLM is similar to that of natural surite in the point that the hydroxyl in the interlayer dehydrates prior to the decomposition of the carbonate structure in the interlayer and also that the carbonate structure decomposes accompanying the collapse of the 2 : 1 layer structure.

    Original languageEnglish
    Pages (from-to)897-901
    Number of pages5
    JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
    Volume105
    Issue number10
    Publication statusPublished - 1997 Oct

    Fingerprint

    Calcium Carbonate
    calcium carbonates
    Mica
    Calcium carbonate
    mica
    swelling
    Swelling
    interlayers
    Lead
    Carbonates
    preparation
    carbonates
    Dry Ice
    chemical analysis
    Hydroxyl Radical
    Powders
    X ray powder diffraction
    Diffraction patterns
    integers
    Ice

    Keywords

    • Basic lead calcium carbonate
    • Surite
    • Swelling mica
    • Thermal behavior

    ASJC Scopus subject areas

    • Ceramics and Composites

    Cite this

    Preparation and properties of a basic lead calcium carbonate-swelling mica complex. / Uehara, Motoki; Yamazaki, Atsushi; Tsutsumi, Sadao.

    In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 105, No. 10, 10.1997, p. 897-901.

    Research output: Contribution to journalArticle

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