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    • 9. 发明授权
    • Composition and process for making the composition
    • 制作组合物的组成和方法
    • US08557730B2
    • 2013-10-15
    • US13434214
    • 2012-03-29
    • John Burba
    • John Burba
    • B01J20/26
    • B01D39/00B01J20/0207B01J20/0277B01J20/06B01J20/2803B01J20/3028B01J20/3042C02F1/281C02F2101/103
    • An aggregate composition and process for making the aggregate composition. The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.
    • 用于制备聚集体组合物的聚集体组合物和方法。 聚集体组合物包括不溶性稀土化合物和聚合物粘合剂。 不溶性稀土化合物可以包括铈,镧或镨中的一种或多种。 合适的不溶性含铈化合物可以衍生自碳酸铈或铈盐。 在具体实施方案中,聚集体组合物基本上由一种或多种氧化铈,聚合物粘合剂和任选的流动助剂组成。 制备该组合物的方法包括将不溶性稀土化合物与聚合物粘合剂混合以形成混合物,并使混合物进行机械,化学和/或热处理以将稀土化合物粘附到聚合物粘合剂上。 聚集体组合物可用于各种流体处理应用中以去除流体中的一种或多种化学和生物污染物。
    • 10. 发明授权
    • Preparation method for anion-exchangeable, layered double hydroxides
    • 阴离子交换层状双氢氧化物的制备方法
    • US08435910B2
    • 2013-05-07
    • US12734955
    • 2008-12-02
    • Nobuo IyiTakayoshi Sasaki
    • Nobuo IyiTakayoshi Sasaki
    • B01J21/16
    • C01F7/005B01D53/62B01D2251/40B01D2251/604B01D2251/606B01D2253/104B01D2253/112B01D2257/504B01J20/0277B01J20/041B01J20/043B01J20/06B01J20/08B01J41/10C01G9/006C01G53/006C01P2002/22C01P2002/72C01P2002/82C01P2004/03C02F2001/422Y02C10/04Y02P20/152
    • The invention has for its object to provide a preparation method for preparing an anion-exchangeable LDH by decarbonation of a carbonate ion type LDH, which makes sure de carbonation is implemented with safety in a continuous manner while crystal shape, crystal structure and crystallinity are kept intact.The invention provides a preparation method for preparing an anion-exchangeable, layered double hydroxide wherein a carbonate ion type layered double hydroxide (LDH) having a composition represented by a general formula: QxR(OH)z(CO32−)0.5-y/2(X−)y.nH2O where x is indicative of a numeral range of 1.8≦x≦4.2; z is indicative of 2(x+1); y is indicative of a minimum value of at least 0 that increases to less than 1 when anions (X−) remain or a part of anions is introduced; Q is a divalent metal ion; R is a trivalent metal ion; and n is 2±2 is used as a starting material, and y in said general formula increases to a maximum of 1 by substitution of a minus monovalent anion (X−1) at a carbonate ion site thereby implementing substitution, characterized in that the starting material is dispersed in an aqueous solution mixed with a salt containing minus monovalent anions (X−) in an amount enough for substitution at the carbonate ion site while said aqueous solution is kept at a pH (hydrogen ion exponent) of greater than 4 to less than 7.
    • 本发明的目的是提供一种通过碳酸根离子型LDH的脱碳制备可阴离子交换的LDH的制备方法,其确保以连续方式安全地进行脱碳酸化,同时保持晶体形状,晶体结构和结晶度 完整。 本发明提供一种制备阴离子交换性层状双氢氧化物的制备方法,其中具有由以下通式表示的组成的碳酸根离子型层状双氢氧化物(LDH):QxR(OH)z(CO32-)0.5-y / 2 (X-)y.nH 2 O,其中x表示1.8 @ x @ 4.2的数字范围; z表示2(x + 1); y表示当阴离子(X)保留或部分阴离子被引入时,至少为0的最小值增加到小于1; Q是二价金属离子; R是三价金属离子; 并且使用n为2±2作为起始原料,通过在碳酸根离子位置取代负一价阴离子(X-1)从而实现取代,所述通式中的y增加到最大值1,其特征在于: 将原料分散在与含有负一价阴离子(X-X)的盐混合的水溶液中,其量足以在碳酸盐离子位置进行取代,同时所述水溶液保持在大于4至大约4的pH(氢离子指数)至 小于7。