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    • 11. 发明授权
    • Synthetic inorganic porous material and method for the preparation
thereof
    • 合成无机多孔材料及其制备方法
    • US5559070A
    • 1996-09-24
    • US319573
    • 1994-10-07
    • Kazuo ToriiTakashi IwasakiYoshio OnoderaHiromichi Hayashi
    • Kazuo ToriiTakashi IwasakiYoshio OnoderaHiromichi Hayashi
    • B01J20/18B01J20/10B01J21/10B01J23/00B01J23/755C01B33/20G03G15/01G06T1/00G06T5/00H04N1/409H04N1/46H04N1/60B01J21/08
    • B01J23/755B01J21/10B01J23/002B01J2523/00
    • Proposed is a novel synthetic inorganic porous material having a chemical composition of the general formula[(SiO.sub.2).sub.8 .multidot.(MO.sub.2/3).sub.a .multidot.(OH).sub.2/3a+b ].sup.b- .multidot.b/c(A.sup.c+),in which M is an ion of a divalent metal, e.g., Mg, A is a cation of an alkali metal, alkaline earth metal, hydrogen or ammonium, the subscript a is a positive number of 3 to 10, b is a positive number of 0.1 to 1 and c is a positive number of 1 to 2, and characterized by a specific surface area of 100 to 800 m.sup.2 /g, average pore diameter of 2 to 8 nm, pore volume of 0.1 to 0.8 cm.sup.3 /g and cation exchange capacity of 0.1 to 1.2 meq/g. This porous material is prepared by a method comprising the steps of: (a) mixing an aqueous solution of sodium silicate and an aqueous solution of a water-soluble salt of a divalent metal M, e.g., magnesium, to form hydrous oxides; (b) separating the hydrous oxides from the precipitation medium; (c) subjecting an aqueous slurry of the hydrous oxides to a hydrothermal reaction at a temperature of from 100.degree. to 300.degree. C.; and (d) drying and heating the hydrothermally obtained product at a temperature of from 100.degree. to 1000.degree. C. to effect dehydration.
    • 提出了具有通式[(SiO 2)8x(MO + E,fra 2/3 + EE)ax(OH)+ E,fra 2/3 + EE a + b]的化学组成的新型合成无机多孔材料。 b-xb / c(Ac +),其中M为二价金属的离子,例如Mg,A为碱金属,碱土金属,氢或铵的阳离子,下标a为正数3 至10,b为0.1〜1的正数,c为1〜2的正数,特征在于比表面积为100〜800m 2 / g,平均孔径为2〜8nm,孔体积为 0.1〜0.8cm 3 / g,阳离子交换容量为0.1〜1.2meq / g。 这种多孔材料是通过包括以下步骤的方法制备的:(a)将硅酸钠水溶液与二价金属M例如镁的水溶性盐的水溶液混合以形成水合氧化物; (b)从沉淀介质中分离含水氧化物; (c)使水合氧化物的水性浆料在100℃至300℃的温度下进行水热反应; 和(d)在100℃至1000℃的温度下干燥并加热水热制得的产物以进行脱水。