Results 141 to 150 of about 1,542 (190)
Dissolution of Hectorite in Inorganic Acids
Clays and Clay Minerals, 1996 AbstractThe effect of acid type and concentration on the reaction rate and products of dissolution of hectorite in inorganic acids was investigated. The dissolution of hectorite in hydrochloric (HCl), nitric (HNO3) and sulphuric (H2SO4) acids was characterized using quantitative chemical analysis, infrared (IR) and multinuclear MAS NMR spectroscopies ...
Jana Madejová +2 more
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Through Alizarin-Hectorite Pigments: Influence of Organofunctionalization on Fading
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2020 International audienceIn this work, hectorite/alizarin pigments were prepared at pH 9 and 12. Hectorite was initially modified with cetyltrimethylammonium and pectine to produce organo-hectorites. The influence of organo-hectorite on the stabilization of
Maguy Jaber +2 more
exaly +2 more sources
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Fast Microwave Synthesis of Hectorite
Applied Clay Science, 2009Abstract Hectorite has been synthesized by aging the gel precursor by microwave–hydrothermal treatment at 393 K for 16 h. This hectorite had higher purity (60%) than hectorite prepared by conventional heating (45%). The effect of brucite used, aging temperature and time under microwaves on the resulting hectorite has been studied by XRD, N 2 ...
Jesus E Sueiras +2 more
exaly +2 more sources
Hectorite: Synthesis, Modification, Assembly and Applications [PDF]
Applied Clay Science, 2019 Abstract Hectorite (Na0.3Mg2.7Li0.3Si4O10(OH)2) is a trioctahedral clay mineral with peculiar cation exchange capacity, surface reactivity and adsorption, and easy delamination in water into individual nanolayers, which can then re-assemble in various ways. The aqueous dispersion of hectorite exhibits exclusive rheological and thixotropic properties.
Chun Hui Zhou, Sabine Petit
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A STUDY OF THE SYNHESIS OF HECTORITE
Clays and clay minerals (National Conference on Clays and Clay Minerals), 1959AbstractHectorite, a trioctahedral magnesium montmorillonite, has been synthesized at atmospheric pressure and reflux temperature. The reaction mixture was the system SiO2/MgO/Li2O (or LiF)/Na2O in a large excess of water. The starting ratios were based on the following formula for the mineral [(LixMg6−x)Si8O20(OH)4]x−.xNa+.${\left[ {\left( {L{i_x}M ...
W. T. Granquist, S. S. Pollack
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Hectorite Effects on Swelling and Gel Properties of Hectorite/Poly(AM/IA) Nanocomposite Hydrogels
Polymer Bulletin, 2015A new hectorite/poly(AM/IA) nanocomposite hydrogel was synthesized by inverse microemulsion polymerization. Influences of hectorite content on water absorbency and salt solution absorbency, swellability, pH-sensitivity, gel strength and temperature-resistance of the nanocomposite hydrogel were investigated.
Tao Wan, Wenzhong Cheng, Chuzhang Zou
exaly +2 more sources
Applied Clay Science, 2009 International audienceThis paper aims at comparing the effect of charge location on the hydration properties of two trioctahedral synthetic minerals: saponite and hectorite.
Bruno Lanson +2 more
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Electrooptic Birefringence and Scattering of Hectorite Suspensions
Applied Optics, 1969A study is reported in which two suspensions of the rodlike clay mineral hectorite have been subjected to pulsed electric fields of up to 300 V cm(-1). As the hectorite particles were optically anisotropic, their partial alignment in the field rendered the over-all suspension birefringent. Under similar fields, the intensity of the light scattered from
B L, Brown, B R, Jennings, H, Plummer
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