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    • 9. 发明申请
    • SYNTHETIC SWELLING CLAY MINERALS
    • 合成沸石粘土矿物
    • WO1996007613A1
    • 1996-03-14
    • PCT/NL1995000295
    • 1995-08-31
    • AKZO NOBEL N.V.ENGELHARD DE MEERN B.V.SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.VOGELS, Roland, Jacobus, Martinus, JosephusGEUS, John, Wilhelm
    • AKZO NOBEL N.V.ENGELHARD DE MEERN B.V.SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    • C01B33/40
    • B01J29/049B01J21/16B01J37/0215C01B33/40C01B33/405C07C2/66C07C2/861C07C4/06C07C2521/16C07C15/16
    • Swelling clay minerals are made up of elementary three-layer platelets consisting of a central layer of octahedrally oxygen-surrounded metal ions (octohedron layer), which layer is surrounded by two tetrahedrally surrounded, silicon atom-containing layers (tetrahedron layers), a number of such elementary platelets being optionally stacked. The dimensions of the clay platelets vary from 0.01 mu m to 1 mu m, the number of the stacked elementary three-layer platelets varies from on average one platelet to twenty platelets, while in the octahedron layer at most 30 at.% of the metal ions has been replaced by ions of a lower valency and in the tetrahedron layers at most 15 at.% of the silicon ions has been replaced by ions of a lower valency, such a replacement having taken place in at least one of these layers and these layers having a deficiency of positive charge because of the replacement. They are prepared by bringing the pH of an aqueous liquid containing the components of the clay to a value of 3-9 and the temperature of the liquid to a value of from 60 to 350 DEG C and maintaining it at said value for the time required for the reaction, the pH being maintained at a value within said range.
    • 溶胀粘土矿物由基本的三层血小板组成,由三层氧包围的金属离子(八面体层)组成,该层被两个四面体包围的含硅原子的层(四面体层)包围, 的这种基本血小板可选地堆叠。 粘土片晶的尺寸从0.01μm变化到1μm,堆叠的基本三层血小板的数量平均从一个血小板变化到二十个血小板,而八面体层中金属的最多30at% 离子已经被较低价的离子代替,并且在四面体层中,至多15%的硅离子已被较低价的离子代替,这种替代物已经发生在这些层中的至少一个层中,并且这些替代物 由于更换而具有正电荷不足的层。 它们是通过将含有粘土成分的含水液体的pH值达到3-9,将液体的温度提高到60-350℃并将其保持在所述值所需时间 为了反应,将pH保持在所述范围内的值。