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Aluminium hydroxide

About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.


Papers
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Journal ArticleDOI
TL;DR: Magnesium aluminium hydroxides were coprecipitated from different mixed metal cation solutions at ambient temperature, with different pre-ageing conditions for the aluminum hydroxide pre-precipitate as mentioned in this paper.
Abstract: Magnesium aluminium hydroxides were coprecipitated from different mixed metal cation solutions — at total CM = 0.1 M and Mg/Al2 ratios from 1 to 6 — with sodium hydroxide solution at ambient temperature, with different pre-ageing conditions for the aluminium hydroxide pre-precipitate. The coprecipitations were monitored by potentiometric (pH) titration and the final precipitate compositions were examined by chemical analysis, infrared spectrophotometry and thermal analysis. Magnesium hydroxide was coprecipitated onto completely recrystallised aluminium hydroxide as a simple mixture. Generally, with no to three days pre-ageing, microcrystalline aluminium hydroxide was first precipitated at pH about 4; this then partially redissolved on further addition of sodium hydroxide (to form hydroxoaluminate anion) and magnesium aluminium hydroxide coprecipitates were formed continuously at pHs from 8.0–8.7 to 12.0–12.5. Their compositions were similar to the magnesium hydroxoaluminate hydrates formed by direct precipitation from high pH sodium hydroxoaluminate solutions.

10 citations

Patent
18 May 1979
TL;DR: In this article, a procedure was proposed to obtain a stable quality of fine titanium dioxide composition powder at low cost by a procedure in which aluminium hydroxide is deposited on the surfaces of non-coagulative titanic acid or titanium dioxide in an aqueous slurry, before or after which the titanic acids or Titanium dioxide is baked.
Abstract: PURPOSE: To obtain a stable quality of fine titanium dioxide composition powder at low cost by a procedure in which aluminium hydroxide is deposited on the surfaces of noncoagulative titanic acid or titanium dioxide in an aqueous slurry, before or after which the titanic acid or titanium dioxide is baked. CONSTITUTION: In the process (A), an acid aqueous solution of titanium is hydrolyzed to obtain noncoagulative titanic acid, and then in the process (B), the noncoagulative titanic acid or titanium dioxide obtained therefrom is dispersed into water to obtain an aqueous slurry. Then, 0W10wt% (in terms of SiO 2 on the basis of TiO 2 ) a silicone hydroxide and 1W10wt% (in terms of Al 2 O 3 on the basis of TiO 2 ) an aluminium hydroxide are deposited on the surfaces of noncoagulative titanic acid or titanium dioxide particles in the aqueous slurry. In the process (C), before or after the deposition process (B), the noncoagulative titanic acid or titanium dioxide is baked at 700°C or more so that 80% or more of the noncoagulative titanic acid become fine titanium oxide powder of a grain size of 0.02W0.07microns. COPYRIGHT: (C)1980,JPO&Japio

10 citations

Patent
21 Dec 1996
TL;DR: In this article, a process for producing a sound insulating board is described, which consists of granular particles having a bulk porous structure surrounded by a water-tight stable binder framework of alkali silicate glass with inclusions of boehmite.
Abstract: A mineral insulating body, especially a sound insulating board, consists of granular particles having a bulk porous structure surrounded by a water-tight stable binder framework of alkali silicate glass with inclusions of boehmite. Preferably, the boehmite-containing binder framework is formed from a water glass/aluminium hydroxide suspension and the granular particles consist of expanded glass granules of 0.5-4, preferably 0.5-2 mm size. Also claimed is a process for producing the above mineral insulating body by: (i) mixing a viscous water glass/aluminium hydroxide suspension with porous granular particles in amount to form a bulk porous structure with a binder framework between the granular particles; (ii) introducing the mixture into a mould to form a green body; (iii) optionally pre-drying at 100-200 deg C; and (iv) setting the binder framework by heating at above 350 deg C to form boehmite inclusions in the alkali silicate glass framework.

10 citations

Patent
03 Apr 1979
TL;DR: In this article, a process and installation for the integrated treatment of concentrated residual solutions resulting from the anodization of aluminium parts is described, in which caustic soda is employed in the pickling process and sulphuric acid in the anodicization bath.
Abstract: A process and installation for the integrated treatment of concentrated residual solutions resulting from the anodization of aluminium parts is described, in which caustic soda is employed in the pickling process and sulphuric acid in the anodization bath. The process comprises three sets of operations: (1) Production of aluminium sulphate in concentrated solution or in hydrated crystals, by the treatment of part of the residual solution from the anodization. (2) Production of precipitated aluminium hydroxide and a solution of sodium sulphate from residual anodization and pickling solutions. (3) Production of sodium aluminate from residual pickling solutions and aluminium hydroxide producted in (2). (FIG. 1.)

10 citations

Patent
23 Jan 2008
TL;DR: In this article, a flame retardant polymer cement-based composite water proof coating, which consists of organic liquid and inorganic powder, is presented. But, it is not a new generation.
Abstract: The invention provides a flame retardant polymer cement-based composite water proof coating, which consists of organic liquid and inorganic powder. The organic liquid consists of acrylate elastic emulsion, chloride emulsion, trimeric sodium phosphate and tributyl phosphate. The inorganic powder consists of cement, quartz sand, grammite, aluminium hydroxide and chloroparaffin. The weight mixture ratio between the organic liquid and the inorganic powder is 1 : 1 to 1 : 2 and the weight mixture ratio of each component is 1 of acrylate elastic emulsion, 0.1 to 0.4 of chloride emulsion, 0.01 to 0.05 of trimeric sodium phosphate, 0.01 to 0.05 of tributyl phosphate, 0.4 to 1.2 of Portland cement, 0.1 to 0.3 of quartz sand, 0.1 to 0.3 of grammite, 0.5 to 1.0 of aluminium hydroxide and 0.1 to 0.3 of chloroparaffin. The water paint prepared by the invention is a safe and environmentally friendly polymer cement composite water proof coating of new generation.

10 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20234
202222
202123
202031
201936
201863