citric acid a dispersant for aqueous alumina suspensions

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  • Dispersant For Reducing Viscosity Pitt, Alan R.

    2005/12/22· Soc., 79[7] (1996) 1857-67 'Citric Acid—A Dispersant for Aqueous Alumina Suspensions'. In addition to the use of an acid as an alumina dispersant, the use of an acrylamide polymer for flocculating boehmite is disclosed in U.S

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  • 58-

    Abstract:Polyethylene imine (PEI) proved to be effective for dispersing SiC particles in aqueous media. However, SiC suspensions with only PEI as dispersant exist in a flocculated state at high solid content. In this study, citric

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  • Stabilization of gamma alumina slurry for chemical

    Citric acid molecules were adsorbed onto gamma-alumina surface effectively and exhibited the excellent hydration inhibition effect. Although citrate-alumina surface complexes give barrier to the flocculation, the repulsion potential

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  • Easy to disperse, high durability TiO2 pigment and method

    Hidber P C et al., "Citric Acid—A Dispersant for Aqueous Alumina Suspensions" Journal of the American Ceramic Society, Blackwell Publishing. Malden, MA, US, vol. 79, No. 7, July 1996. pp. 1857-1867 XP002395724. 2

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  • Poly(maleic acid) A novel dispersant for aqueous alumina

    Hidber et al. successfully used citric acid as dispersant for the deflocculation of concentrated alumina slurries. The interaction of citric acid with alumina powder particles leads to adsorption of citrate ions on the hydroxylated alumina powder surface resulting in development of negative charge.

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  • [PDF]STABILIZATION OF HIGHLY CONCENTRATED ALUMINA

    Citric acid is a naturally occurring tricarboxylic acid and a representative of environmentally friendly dispersants. 2. Materials and methods 2.1 Suspension preparation Alumina suspensions were prepared with 70 wt. % of alumina powder. High-purity Al2O3powder was used, with the average particle size of 300-400 nm (Alcan Chemicals, USA).

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  • [PDF]Imidazoline Type Dispersant for Aqueous Dolomite Suspension

    25 vol.% ethanol or isopropanol. When used as a dispersant poly (acrylic acid) a high ratio of alcohol to water resulted in flocculation of the suspension. Suspensions of magnesia alumina in the presence of isopropanol: water

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  • Citric Acid—A Dispersant for Aqueous Alumina Suspensions

    1996/07/01· The adsorption behavior of citric acid is dependent on the pH of the suspension and the concentration of the citric acid. The maximum amount of citric acid adsorbed on the alumina surface, 2.17 μ.mol/m 2 at pH 3, decreases to 1.17 μmol/m 2 at pH 8.

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  • Adsorption property of citrate dispersant on BaTiO3 particles

    2007/04/24· Adsorption property of citrate dispersant on BaTiO3 particles in aqueous solution Adsorption property of citrate dispersant on BaTiO3 particles in aqueous solution Su, Tao-long; Zhuang, Zhi-qiang 2007-04-24 00:00:00 Dispersion behavior of ultra fine BaTiO3 particles in the aqueous solution of ammonium citrate (NH4-CA) or citric acid lanthanum chelate (NH4-La-CA) was investigated.

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  • Dispersant Adsorption and Viscoelasticity of Alumina

    2008/08/16· Colloidal Processing of Mg(OH)2 Aqueous Suspensions Using Sodium Polyacrylate as Dispersant. Industrial & Engineering Chemistry Research 2014,53 (12),4755-4762. DOI: 10.1021/ie5002857.

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  • Adsorption property of citrate dispersant on BaTiO3 particles

    2007/04/01· Dispersion behavior of ultra fine BaTiO3 particles in the aqueous solution of ammonium citrate (NH4-CA) or citric acid lanthanum chelate (NH4-La-CA) was investigated. The dispersion property was characterized with sedimentation value. It is easier to obtain well dispersed slurry with NH4La-CA than NH4-CA. In an attempt to better understand the role of citric acid radical, simulation

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  • Ascorbic acid as a dispersant for concentrated alumina

    Simgecinar et al., reported that ascorbic acid as dispersant for alumina nanopowder suspensions [20]. Navaneethan et al., used citric acid to control the phase and size of TiO 2

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  • Interactions of dispersants and binders with {alpha}-alumina

    1995/12/31· By variation of the citric acid concentration, it is possible to adjust the isoelectric point (IEP) of alumina to any pH-value between 9 and 3. For citric acid, a high adsorption density on alumina was measured over a broad pH range

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  • Citric Acid-A Dispersant for Aqueous Alumina Suspension

    2005/04/21· The adsorption behavior of citric acid is dependent on the pH of the suspension and the concentration of the citric acid. The maximum amount of citric acid adsorbed on the alumina

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  • Poly(maleic acid) A novel dispersant for aqueous alumina

    The carboxylic acid groups attached to Falta, India; d50 ∼ 0.7 m; surface area, 7 m2 /g) based aqueous slur- 138 77 the polymer chain are deprotonated at pH above pKa value, result- ries were At optimum hydroxide (25% solution, Merck, Mumbai, India) was used for pH 141 80 dispersant concentration, these molecules adsorb on suspended adjustment.

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  • [PDF] Dispersion of aqueous nano-sized alumina suspensions

    Abstract In this paper, we investigate and report the effects of a cationic polyelectrolyte, polydiallydimethylammonium chloride (PDADMAC), on the stability of nano-sized alumina (α-Al 2 O 3 ) suspension. Due to the static electrical repulsion interactions, PDADMAC show significant adsorption on α-Al 2 O 3 only at alkaline pH. Considerable amount of non-adsorbed free PDADMAC exist in α-Al 2

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  • Effect of citric acid on the microstructure and optical properties

    The aqueous suspensions were treated by ultrasonication for 3 min before characterization. 0.25 M hydrochloric acid and 0.25 M sodium hydroxide solutions were used to adjust the pH values. 2.3. Ball-milling of Y 2 O 3 slurries

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  • [PDF]Citric Acid Adsorption on TiO2 Nanoparticles in Aqueous

    Citric Acid Adsorption on TiO 2 Nanoparticles in Aqueous Suspensions at Acidic and Circumneutral pH: Surface Coverage, Surface Speciation, and Its Impact on Nanoparticle-Nanoparticle Interactions Imali A. Mudunkotuwa and Vicki

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  • [PDF]Alumina/watersuspensionsinthepresenceofPEO–PPO–PEO

    Effect of dispersant concentration (10 6,10 4,10 3 M)andtype(F-127,F-68)weretestedbyusingMethod IV. Polyacrylic acid (PAA) was also used for compar-ison purposes since it is a well known dispersant for aqueous alumina

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  • [PDF]J. Am. Ceram. SOC., 71 Processing of Highly Concentrated

    J. Am. Ceram.SOC., 71 [I21 1062-67 (1988) Processing of Highly Concentrated Aqueous a-Alumina Suspensions Stabilized with Polyelectrolytes JOSEPH CESARANO III* and ILHAN A. AKSAY* Department of Materials Science

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  • Rheological properties of aqueous α A12O3 suspensions

    The effects of concentration of polyacrylic acid as a dispersant on rheological properties of aqueous alumina suspensions have been investigated under steady and oscillatory shear conditions. At soli...

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  • [PDF]STABILIZATION OF HIGHLY CONCENTRATED ALUMINA

    carbonic acid ester ("Dolapix ET 85") [17] were used to stabilize aqueous alumina suspensions. As the coverage with adsorbed dispersant Seruna increases, the zeta potential increases accordingly, leading to a well stabilized 𝜏=𝑘𝛾 á 𝜏=𝜏

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  • Rheological properties of aqueous α A12O3 suspensions

    The effects of concentration of polyacrylic acid as a dispersant on rheological properties of aqueous alumina suspensions have been investigated under steady and oscillatory shear conditions. At soli...

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  • Study on the Dispersion Mechanism of Citric Acid on Chlorite

    Citric acid, as a dispersant, has been widely used in the flotation separation of silicate minerals, sulfide ores and some calcium carbonate minerals [7,8,9,10,11].In the field of hematite flotation, the dispersing effect of citric acid on

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  • Citric Acid—A Dispersant for Aqueous Alumina Suspensions

    1996/07/01· The adsorption behavior of citric acid is dependent on the pH of the suspension and the concentration of the citric acid. The maximum amount of citric acid adsorbed on the alumina surface, 2.17 μ.mol/m 2 at pH 3, decreases to 1.17 μmol/m 2 at pH 8.

    MORE
  • Easy to disperse, high durability TiO2 pigment and method

    Hidber P C et al., "Citric Acid—A Dispersant for Aqueous Alumina Suspensions" Journal of the American Ceramic Society, Blackwell Publishing. Malden, MA, US, vol. 79, No. 7, July 1996. pp. 1857-1867 XP002395724. 2

    MORE
  • [DOC]Aqueous 47 vol% suspensions of mixtures of alumina and

    Concentrated aqueous 57 vol% suspensions for rheology measurements and consolidation were prepared by adding the powders to distilled water containing the appropriate amount of dispersant: acid citric (a.r., Anedra

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  • [PDF]Inhibition of Aluminum Oxyhydroxide Precipitation with

    in aqueous solutions of high (>2.47 mol/mol) hydroxide-to-aluminum ratios. Conversely, citric acid also colloidally stabilizes particles in aqueous suspensions of aluminum-containing particles. Solutions of aluminum chloride, with

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  • (PDF) Selection of dispersants for high-alumina zero-cement

    To prepare the suspensions, the dry alumina powder was gradually added into distilled water with the help of a laboratory mixer. A fixed amount of dispersant was previously mixed to the dry alumina powder in the case of suspensions prepared with citric acid and gallic acid.

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  • US Patent Application for Dispersant For Reducing Viscosity

    2005/12/22· Soc., 79[7] (1996) 1857-67 'Citric Acid—A Dispersant for Aqueous Alumina Suspensions' discusses the science of the high affinity of citric acid for an α-alumina surface. PROBLEM TO BE SOLVED BY THE INVENTION

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  • Dispersant Adsorption and Viscoelasticity of Alumina

    2008/08/16· Colloidal Processing of Mg(OH)2 Aqueous Suspensions Using Sodium Polyacrylate as Dispersant. Industrial & Engineering Chemistry Research 2014,53 (12),4755-4762. DOI: 10.1021/ie5002857.

    MORE
  • Poly(maleic acid) A novel dispersant for aqueous alumina

    Poly(maleic acid) A novel dispersant for aqueous alumina slurry Peer review under responsibility of The Ceramic Society of Japan and the Korean Ceramic Society. Saralasrita Mohanty Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology Kharagpur Kharagpur 721302India, Bodhisatwa Das Biomaterials and Tissue

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  • US Patent Application for Dispersant For Reducing Viscosity

    2005/12/22· Soc., 79[7] (1996) 1857-67 'Citric Acid—A Dispersant for Aqueous Alumina Suspensions' discusses the science of the high affinity of citric acid for an α-alumina surface. PROBLEM TO BE SOLVED BY THE INVENTION

    MORE
  • Poly(maleic acid) A novel dispersant for aqueous alumina

    Poly(maleic acid) A novel dispersant for aqueous alumina slurry Peer review under responsibility of The Ceramic Society of Japan and the Korean Ceramic Society. Saralasrita Mohanty Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology Kharagpur Kharagpur 721302India, Bodhisatwa Das Biomaterials and Tissue

    MORE
  • Aluminium oxide dispersion Evonik DEGUSSA GmbH

    Hidber et al, "Citric Acid—A Dispersant fro Aqueous Alumina Suspensions", J. Am. Ceram. Soc. 79[7], 1857-1867 (1996). Somasundaran, "Encyclopedia of Surfaces and Colloid Science" ISBN 0849395747, p. 5316

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  • [PDF]Study of citric acid dispersant in the settling behavior of slate

    STUDY OF CITRIC ACID DISPERSANT IN THE SETTLING BEHAVIOUR OF SLATE POWDER SUSPENSIONS L.B. Palhares1, C.G. dos Santos2*, T.N.Hunter3 1Centro Federal de Educação Tecnológica de Minas Gerais

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  • Ascorbic acid as a dispersant for concentrated alumina

    The viscosity of the nano-size alumina powder suspensions decreased dramatically with as little as 1 wt.% of ascorbic acid. The role of ascorbic acid as a dispersant is attributable to its strong specific interaction with the alumina

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  • Stabilization of Al2O3 suspensions with citric acid CORE

    From the obtained results, the optimal amount of dispersant i.e. citric acid was determined and amounts to 0.1 wt.%. Stability of the prepared suspensions at different pH values was evaluated by sedimentation tests on 20 wt

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  • Dispersant For Reducing Viscosity Pitt, Alan R.

    2005/12/22· Soc., 79[7] (1996) 1857-67 'Citric Acid—A Dispersant for Aqueous Alumina Suspensions'. In addition to the use of an acid as an alumina dispersant, the use of an acrylamide polymer for flocculating boehmite is disclosed in U.S

    MORE
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