Ceramics-Silikáty 36, (3) 157 - 162 (1992) |
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THERMAL STABLE POROUS CRYSTALS FROM MONTMORILLONITE - PART I. PREPARATION AND THE PROPERTIES OF Al AND Zr PILLARED MONTMORILLONITES
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Krajčovič Jozef, Horváth Ivan
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Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravska cesta, 842 36 Bratislava, Czechoslovakia
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Al and Zr pillared clays precursors were prepared by the interaction of the particular inorganic cation and montmorillonite suspension. Al and Zr pillared montmorillonites were obtained through the calcination of individual precursor at 500 °C. The methods of thermal analysis, I. R. spectroscopy, X-ray diffraction and BET were used to determine the basic properties of these new types of materials. The prepared porous crystals exhibited the specific surface area about 100 m²g⁻¹ stable till up to 700 °C. |
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