Results 211 to 220 of about 14,521 (250)

Radiolysis of thermally dehydrated gibbsite

Materials Chemistry and Physics, 2021
Abstract Aluminum hydroxide (gibbsite, Al ( OH ) 3 ) powders and their thermally dehydrated forms were rehydrated and irradiated with gamma rays to examine the effects of the collapse of the crystalline gibbsite structure as it is converted to alumina on the transport of precursors of molecular hydrogen to the surface.
Elizabeth Briley, Patricia Huestis, X. Zhang, K.M. Rosso, Jay A. LaVerne   +4 more
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Structural and Electronic Properties of Bulk Gibbsite and Gibbsite Surfaces

Zeitschrift für anorganische und allgemeine Chemie, 2005
AbstractStructure and electronic structure of gibbsite and gibbsite surfaces are studied using gradient‐corrected density functional theory and a density‐functional based tight‐binding (DFTB) scheme. The electronic density‐of‐states (DOS) is insignificantly changed when comparing bulk and single‐layer (001) surfaces, but changes for other surfaces, as ...
Johannes Frenzel, Augusto F. Oliveira, Helio A. Duarte, Thomas Heine, Gotthard Seifert   +4 more
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Gibbsite and Goethite Solubility

Soil Science Society of America Journal, 2005
2‐Ketogluconate (kG) is a microbial byproduct that has been isolated from the rhizosphere of several plants and has been found to accumulate around bacteria adhering to rock surfaces. It has long been suspected that kG may play a role in enhancing the bioavailability of soil nutrients.
Michael E. Essington, Julia B. Nelson, William L. Holden   +2 more
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Antimony sorption at gibbsite–water interface

Chemosphere, 2011
Antimony (Sb) is extensively used in flame retardants, lead-acid batteries, solder, cable coverings, ammunition, fireworks, ceramic and porcelain glazes and semiconductors. However, the geochemical fate of antimony (Sb) remained largely unexplored. Among the different Sb species, Sb (V) is the dominant form in the soil environment in a very wide redox ...
Sudipta, Rakshit, Dibyendu, Sarkar, Pravin, Punamiya, Rupali, Datta   +3 more
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ADSORPTION OF PHOSPHATE BY GIBBSITE

Journal of Soil Science, 1976
Summary The effects of the nitrate salts of zinc, cadmium, and strontium on the adsorption of phosphate by gibbsite have been measured at pH 5.5 and 25° C. At solution phosphate concentrations greater than 10 μM strontium and cadmium increased phosphate adsorption whilst zinc had no effect.
K. R. HELYAR, D. N. MUNNS, R. G. BURAU
openaire   +2 more sources

Hydrothermal process of synthetic gibbsite and the characteristics of Na in gibbsite crystal

Chemical Papers, 2018
The presence of Na in synthetic gibbsite was studied by several modern testing methods such as X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy and inductively coupled plasma. Results show that Na is located between gibbsite crystals and is not present as sodium aluminosilicate hydrate in synthetic gibbsite ...
Hui-bin Yang, Feng-qin Liu, Hong-liang Zhao, Rui Wu   +3 more
openaire   +1 more source

Adsorption of oxalate on gibbsite

Hydrometallurgy, 1986
Abstract The adsorption of oxalate ion on gibbsite was measured using a radiotracer. For oxalate concentrations of 2 to 18 mol/m 3 , Na 2 O of 0.1 to 0.125 g/cm 3 and Al 2 O 3 /Na 2 O of 0.21 to 0.32 by weight, the adsorption appears to about 0.02 μmol/m 2 , or less than 0.01 monolayer.
Jeffrey P. Kingsley, William R. Wilcox
openaire   +1 more source

Atomic force microscopy of gibbsite

Applied Surface Science, 1998
Atomic force microscopy has been used to image the surface structure of a range of gibbsite (Al(OH)3) crystals. A variety of microtopographies has been imaged on the (001) plane, and sub-nanometer detail has been observed on flat areas that is commensurate with the known bulk structure of the solid.
Lloyd, S., Thurgate, S.M., Cornell, R.M., Parkinson, G.M.   +3 more
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Gibbsite scaling on polymer surfaces

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2012
Gibbsite scale build up was studied over a range of polymer surfaces in real Bayer process conditions. For all samples there was an initial slow rate of scale growth and there was evidence that this growth proceeded along scratches on the polymer surfaces.
Eoin P Enright, Teresa Curtin, John Haines, Kenneth T Stanton   +3 more
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Thermodynamic assessment of Hg(II)–gibbsite interactions

Journal of Colloid and Interface Science, 2006
As discrete particles and/or as surface coatings on other minerals in natural systems, aluminum hydroxides are efficient sinks for Hg(II). The Hg(II) adsorption on gibbsite was determined as a function of temperature (T), pH, and the type of background electrolytes, i.e., NaNO(3), NaClO(4), and NaCl.
Rohan, Weerasooriya, Wasana, Seneviratne, Heasha A, Kathriarachchi, Heinz J, Tobschall   +3 more
openaire   +2 more sources