PREPARATION METHOD FOR ANION-EXCHANGEABLE, LAYERED DOUBLE HYDROXIDES
    62.
    发明申请
    PREPARATION METHOD FOR ANION-EXCHANGEABLE, LAYERED DOUBLE HYDROXIDES 失效
    用于阴离子交换的层状双羟基化合物的制备方法

    公开(公告)号:US20100279848A1

    公开(公告)日:2010-11-04

    申请号:US12734955

    申请日:2008-12-02

    Abstract: 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.

    Abstract translation: 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表示数值范围为1.8& nlE; x≦̸ 4.2; 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。

    METHOD FOR REMOVING HALOGEN SERIES GAS AND AGENT FOR REMOVING HALOGEN SERIES GAS
    70.
    发明申请
    METHOD FOR REMOVING HALOGEN SERIES GAS AND AGENT FOR REMOVING HALOGEN SERIES GAS 失效
    用于除去卤化物系列气体和除去卤素系列气体的方法

    公开(公告)号:US20090130012A1

    公开(公告)日:2009-05-21

    申请号:US12273743

    申请日:2008-11-19

    Abstract: To provide an agent for removing a halogen series gas and a method for removing a halogen series gas which is excellent in a removing ability of removing the present halogen series gas in a low concentration area, which prevents an adsorbent from generating heat, and which is capable of reducing formation of a solid waste.A method for removing a halogen series gas, which comprises bringing a gas to be treated which contains at least one member selected from the halogen series gas group consisting of F2, Cl2, Br2, I2, and compounds which generate a hydrogen halide or hypohalogeneous acid upon hydrolysis, into contact with a granule comprising, based on the total mass of the granule, from 45 to 99.85 mass % of an alkali metal salt, from 0.1 to 40 mass % of a carbonaceous material, and from more than 0 mass % to 15 mass % of an alkaline earth metal salt, in the presence of water.

    Abstract translation: 提供除去卤素系列气体的试剂和除去在低浓度区域除去本发明的卤素系列气体的除去能力优异的卤素系列气体的方法,其防止吸附剂发热, 能够减少固体废物的形成。 一种除去卤素系列气体的方法,其特征在于,使含有选自由F2,Cl2,Br2,I2构成的卤素系列气体组中的至少一种的被处理气体和产生卤化氢或低卤酸的化合物 在水解时与颗粒接触,所述颗粒包含基于颗粒总质量的45至99.85质量%的碱金属盐,0.1-40质量%的碳质材料和大于0质量%至 15质量%的碱土金属盐,在水的存在下。

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