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LAYERED DOUBLE HYDROXIDE CRYSTAL, ANION ADSORBENT, AND PRODUCTION METHOD FOR SAID LAYERED DOUBLE HYDROXIDE CRYSTAL

外国特許コード F200010164
整理番号 (N18027)
掲載日 2020年6月3日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP032928
国際公開番号 WO 2020040270
国際出願日 令和元年8月23日(2019.8.23)
国際公開日 令和2年2月27日(2020.2.27)
優先権データ
  • 特願2018-157573 (2018.8.24) JP
発明の名称 (英語) LAYERED DOUBLE HYDROXIDE CRYSTAL, ANION ADSORBENT, AND PRODUCTION METHOD FOR SAID LAYERED DOUBLE HYDROXIDE CRYSTAL
発明の概要(英語) Provided is a layered double hydroxide crystal that is able to achieve a higher ion-exchange capacity as compared with conventional products. The layered double hydroxide crystal 1 according to an embodiment of the present invention is represented by formula (1), and comprises a plurality of crystal grains 10 having a laminated structure in which a plurality of plate-like crystals 11, 11,… are stacked on one another, wherein the sizes of the plurality of crystal grains 10, 10,… are uniformly in the microscale level. (1): [Ni2+1-xCo3+x(OH)2]·[(Co32-)x/2] (wherein, 0.2(FR) L'invention concerne un cristal d'hydroxyde double lamellaire capable d'atteindre une capacité d'échange d'ions plus élevée en comparaison avec des produits classiques. Selon un mode de réalisation de la présente invention, le cristal d'hydroxyde double lamellaire 1 est représenté par la formule (1), et comprend une pluralité de grains cristallins 10 ayant une structure stratifiée dans laquelle une pluralité de cristaux en plaquettes 11, 11… sont empilés les uns sur les autres, les tailles de la pluralité de grains cristallins 10, 10… étant à l'échelle micrométrique de manière uniforme. (1) : [Ni2 + 1 - xCo3 + x(OH)2] · [(Co3 2-)x/2] (où, 0,2 < x ≤ 0,33)
従来技術、競合技術の概要(英語) BACKGROUND ART
(Layered Double Hydroxides: LDHs) is of a layered double hydroxide, anion exchange and inorganic ion exchangers, and a metal oxide (the host layer), and a water molecule and the anion species (guest layer) layered structure by alternately stacking an inorganic compound. Of the anion species can include the guest layer, while maintaining the layered structure, and the anionic species in the solution can be replaced, the inter-layer (two-dimensional space) using a high selectivity in ion-exchange has been found.
Conventional, selective ion-exchange is often LDHs and discussed, for example, from an aqueous solution of nitric acid ion, phosphorus and arsenic can be selectively and simultaneously as an adsorbent, the adsorbent having a Mg-Al system hydrotalcite has been proposed (see Patent Document 1).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • SHINSHU UNIVERSITY
  • 発明者(英語)
  • TESHIMA KATSUYA
  • SUDARE TOMOHITO
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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