公开(公告)号：EP2974793A4

公开(公告)日：2016-11-30

申请号：EP14764090

申请日：2014-03-06

Applicant: DAICEL CORP

Inventor： KOJIMA RYOUTA ,  FUKUI NAOYUKI ,  WATANABE HITOSHI

IPC: B01J35/02 ,  B01D53/86 ,  B01J23/745 ,  C09D5/16 ,  C09D7/12 ,  C09D201/00

CPC classification number: B01J21/063 ,  B01D53/8668 ,  B01D2255/20707 ,  B01D2255/20738 ,  B01D2255/802 ,  B01D2257/306 ,  B01D2257/708 ,  B01D2257/90 ,  B01D2257/91 ,  B01D2258/06 ,  B01D2259/4508 ,  B01D2259/4591 ,  B01D2259/804 ,  B01J23/745 ,  B01J31/06 ,  B01J31/26 ,  B01J35/004 ,  B01J35/1014 ,  B01J37/0203 ,  B01J37/0219 ,  C08F220/06 ,  C09D5/16 ,  C09D5/1606 ,  C09D7/12 ,  C09D7/1208 ,  C09D7/40 ,  C09D7/60 ,  C09D201/00

Abstract: Provided is a titanium oxide dispersion liquid that has dispersibility and dispersion stability both at superior levels and, when applied and dried, can form a photocatalyst coating film capable of rapidly developing excellent photocatalytic activity. The titanium oxide dispersion liquid according to the present invention includes titanium oxide particles (A), a dispersing agent (B), and a solvent (C). The titanium oxide particles (A) support a transition metal compound. The dispersing agent (B) includes a poly(acrylic acid) or a salt thereof. The poly(acrylic acid) or a salt thereof in the dispersing agent (B) preferably includes a poly(acrylic acid) alkali metal salt. The poly(acrylic acid) or a salt thereof in the dispersing agent (B) preferably has a weight-average molecular weight of from 1000 to 100000.

公开(公告)号：JP2014177384A

公开(公告)日：2014-09-25

申请号：JP2013053081

申请日：2013-03-15

Applicant: Daicel Corp ,  株式会社ダイセル

Inventor： KOJIMA RYOTA ,  FUKUI NAOYUKI

IPC: C01G23/04 ,  B01J23/745 ,  B01J35/02

Abstract: PROBLEM TO BE SOLVED: To provide a titanium oxide dispersion excellent in dispersibility and dispersion stability and capable of forming a photocatalyst coating film rapidly exhibiting superior photocatalytic functions by being coated and dried.SOLUTION: The titanium oxide dispersion includes: transition metal compound-supporting titanium oxide particles (A), a dispersant (B) composed of a water-soluble titanium complex, and a solvent (C). As the transition metal compound-supporting titanium oxide particles (A), an iron compound-supporting titanium oxide particles are preferable. As the water-soluble titanium complex for the dispersant (B), a titanium complex using hydroxycarboxylic acid or amine-based compound as ligand is preferable.

Abstract translation: 要解决的问题：提供分散性和分散稳定性优异的钛酸盐分散体，能够通过涂布干燥而快速显示出优异的光催化功能的光催化剂涂膜形成。溶液：氧化钛分散体包括：过渡金属化合物负载钛 氧化物粒子（A），由水溶性钛络合物构成的分散剂（B）和溶剂（C）。 作为负载有过渡金属化合物的氧化钛粒子（A），优选含铁化合物的氧化钛粒子。 作为分散剂（B）的水溶性钛络合物，优选使用羟基羧酸或胺类化合物作为配体的钛络合物。

公开(公告)号：JP2013014443A

公开(公告)日：2013-01-24

申请号：JP2011146226

申请日：2011-06-30

Applicant: Daicel Corp ,  株式会社ダイセル

Inventor： YOKONO TERUHISA ,  FUKUI NAOYUKI

IPC: C01G23/053 ,  B01J23/74 ,  B01J35/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing brookite-type titanium oxide having excellent photocatalytic power.SOLUTION: The method for producing brookite-type titanium oxide includes a hydrothermal treatment step in which 0.5-8 mol/L of urea is added to an aqueous solution containing a hydroxycarboxylic acid titanium complex and the urea-added aqueous solution is subjected to a hydrothermal treatment at a reaction temperature of 110-220°C under a pressure not less than the saturated vapor pressure at the reaction temperature for ≥2 h. The hydroxycarboxylic acid titanium complex is preferably a compound obtained by reacting a peroxotitanic acid complex with a hydroxycarboxylic acid.

Abstract translation: 待解决的问题：提供一种具有优异的光催化能力的板钛矿型氧化钛的制备方法。 解决方案：制备板钛矿型氧化钛的方法包括水热处理步骤，其中将0.5-8mol / L的尿素加入到含有羟基羧酸钛络合物的水溶液中，并且将加入尿素的水溶液 在110-220℃的反应温度下在不低于饱和蒸汽压的压力下在反应温度下进行水热处理≥2小时。 羟基羧酸钛络合物优选是通过使过氧钛酸配合物与羟基羧酸反应得到的化合物。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012206933A

公开(公告)日：2012-10-25

申请号：JP2012057607

申请日：2012-03-14

Applicant: Daicel Corp ,  株式会社ダイセル

Inventor： WATANABE HITOSHI ,  OMORI TAKUMI ,  FUKUI NAOYUKI

IPC: C01G23/04 ,  B01J21/06

Abstract: PROBLEM TO BE SOLVED: To provide a method for purifying fine particles, which is excellent in separation efficiency of ionic impurities and with which load on a filtration membrane and quantity of washing water usage are reduced, and with which the content of ionic impurities in the fine particles is significantly reduced, and the fine particles with high dispersibility are easily and efficiently obtained.SOLUTION: In the method for purifying the fine particles, ionic impurities included in the fine particles are separated and removed therefrom, wherein the fine particles are purified with circulated membrane filtration in which an aqueous dispersion of the fine particles with fine particle concentration of 0.1-40 wt.% is membrane-filtrated by a crossflow method, the concentrated aqueous dispersion of the fine particles is obtained by separating and removing the ionic impurities with the filtrated liquid, the concentrated aqueous dispersion of the fine particles is diluted with addition of water in such a way that the fine particle concentration is in the range, and the membrane filtration operation is repeated again by the crossflow method, and the filtration membrane is periodically backwashed.

Abstract translation: 要解决的问题：提供一种离子性杂质的分离效率优异的微细粒子的净化方法以及过滤膜上的负荷和洗涤水的使用量的降低，并且离子的含量 细颗粒中的杂质显着降低，并且容易且有效地获得具有高分散性的细颗粒。 解决方案：在精细微粒的方法中，将微粒中包含的离子性杂质分离除去，通过循环膜过滤来纯化微粒，其中微粒浓度的微粒的水分散体 的0.1〜40重量％的膜通过交叉流法进行膜过滤，通过用过滤液分离除去离子性杂质，得到浓缩的微粒子水分散体，将细粒的浓缩水分散液用添加物稀释 的水，使得细颗粒浓度在该范围内，并且通过交叉流法再次重复膜过滤操作，并且过滤膜被周期性地反洗。 版权所有（C）2013，JPO＆INPIT