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1. JP2020196656 - METHOD FOR PRODUCING RARE EARTH CARBONATE FINE PARTICLE AND RARE EARTH CARBONATE FINE PARTICLE

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Japon
Numéro de la demande 2019105267
Date de la demande 05.06.2019
Numéro de publication 2020196656
Date de publication 10.12.2020
Numéro de délivrance 7084353
Date de délivrance 06.06.2022
Type de publication B1
CIB
C01F 17/00
CCHIMIE; MÉTALLURGIE
01CHIMIE INORGANIQUE
FCOMPOSÉS DE BÉRYLLIUM, MAGNÉSIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARYUM, RADIUM, THORIUM OU COMPOSÉS DES MÉTAUX DES TERRES RARES
17Composés des métaux des terres rares
CPC
C01F 17/00
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
17Compounds of rare earth metals
C01F 17/247
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
17Compounds of rare earth metals
20Compounds containing only rare earth metals as the metal element
247Carbonates
C01P 2004/64
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
60Particles characterised by their size
64Nanometer sized, i.e. from 1-100 nanometer
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 40/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
40Manufacture or treatment of nanostructures
Déposants SHIN ETSU CHEM CO LTD
信越化学工業株式会社
Inventeurs TAKAHASHI MITSUTO
高橋　光人
Mandataires 好宮　幹夫
小林　俊弘
Titre
(EN) METHOD FOR PRODUCING RARE EARTH CARBONATE FINE PARTICLE AND RARE EARTH CARBONATE FINE PARTICLE
(JA) 希土類炭酸塩微粒子の製造方法及び希土類炭酸塩微粒子
Abrégé
(EN)

PROBLEM TO BE SOLVED: To provide a method for producing rare earth carbonate fine particles excellent in dispersibility at a submicron level or less.

SOLUTION: A method for producing rare earth carbonate fine particles comprises preparing a reaction solution in which an alkyl dimethylamine oxide compound having a structure represented by the formula (1) or a methyl morpholine oxide compound is added to an aqueous solution containing a rare earth ion and an excess amount of urea relative to the rare earth ion in the amount of 10 to 200 mol% to the rare earth ion, and subjecting the reaction solution to a hydrothermal treatment. In the formula, R represents an alkyl group of C1 to C14.

SELECTED DRAWING: None

COPYRIGHT: (C)2021,JPO&INPIT


(JA)

【課題】サブミクロン以下で分散性に優れた希土類炭酸塩微粒子の製造方法を提供する。
【解決手段】希土類炭酸塩微粒子の製造方法であって、希土類イオンと前記希土類イオンに対して過剰量の尿素とを含む水溶液に、下記式（１）で表される構造を有するアルキルジメチルアミンオキシド化合物、又は、メチルモルホリンオキシド化合物が、前記希土類イオンに対して１０〜２００ｍｏｌ％の添加量となるように添加された反応溶液を作製し、前記反応溶液を水熱処理することにより、希土類炭酸塩微粒子を製造する希土類炭酸塩微粒子の製造方法。

（但し、ＲはＣ１〜Ｃ１４のアルキル基を表す。）
【選択図】なし
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