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METHOD FOR MANUFACTURING LAYERED DOUBLE HYDROXIDE CRYSTAL

外国特許コード F210010472
整理番号 (N19054)
掲載日 2021年7月28日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2020JP045634
国際公開番号 WO 2021117708
国際出願日 令和2年12月8日(2020.12.8)
国際公開日 令和3年6月17日(2021.6.17)
優先権データ
  • 特願2019-223077 (2019.12.10) JP
発明の名称 (英語) METHOD FOR MANUFACTURING LAYERED DOUBLE HYDROXIDE CRYSTAL
発明の概要(英語) This method for manufacturing a layered double hydroxide crystal comprises: a step for preparing a raw material prepared by further adding a Na source substance to a mixture obtained by mixing a Ni source substance, a Fe source substance, and a Na source substance on the basis of the stoichiometric ratio of a precursor crystal; a step for producing a precursor crystal composed of NaNi1-xFexO2 crystals (0.25<x≤0.9) by heating the raw material at 600-1,000ºC for at least one hour; and a step for exchanging sodium ions of the precursor crystal for chloride ions.
従来技術、競合技術の概要(英語) BACKGROUND ART
The layered double hydroxide (Layered Double Hydroxides: LDHs) is an anion exchangeable inorganic ion exchanger, and is a layered inorganic compound having a structure in which a metal oxide (host layer) and an anionic species or water molecule (guest layer) are alternately layered. Since the anionic species of the guest layer can be exchanged for the anionic species in the, solution while maintaining the, layered structure, it has been found to exhibit highly selective ion exchange properties utilizing interlayer (two-dimensional space).
In the related art, selective ion exchange properties of LDHs have been discussed. for example, an adsorbent having Mg-Al hydrotalcite has been devised as an adsorbent capable of simultaneously and selectively adsorbing nitrate ions, phosphorus, and arsenic from an aqueous solution (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
  • YANAGISAWA Kazumichi
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 IT 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 ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS 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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