Results 141 to 150 of about 3,944 (185)
Some of the next articles are maybe not open access.
Sorption of Phenanthrene by Reference Smectites
Environmental Science & Technology, 2001Fate and behavior of nonionic hydrophobic organic compounds (HOCs) in the environment is mainly controlled by their interactions with various components of soils and sediments. Due to their large surface area and abundance in many soils, smectites may greatly influence the fate and transport of HOCs in the environment.
L S, Hundal +3 more
openaire +2 more sources
Complexation of carboxylate on smectite surfaces
Physical Chemistry Chemical Physics, 2017We report a first principles molecular dynamics (FPMD) study of carboxylate complexation on clay surfaces.
Xiandong Liu +4 more
openaire +2 more sources
Interstratified kaolinite-smectite: Nature of the layers and mechanism of smectite kaolinization
American Mineralogist, 2006This study aims to contribute to a better understanding of the nature and evolution mechanism of interstratified clay minerals. We examined the
Dudek T, Cuadros J, Fiore S
openaire +3 more sources
Atrazine Desorption from Smectites
Soil Science Society of America Journal, 1994Abstract In soils low in organic matter, pesticide adsorption and desorption by clay minerals may strongly influence the fate of pesticides in soil environments. Atrazine (2‐chloro‐4‐ethylamino‐6‐isopropylamino‐1,3,5‐triazine) adsorption‐desorption was determined on 11 reference smectites (<2‐µm size fraction), and a soil smectite (
Barriuso, E. +3 more
openaire +2 more sources
Smectite and illite/smectite mixed-layer clay minerals in the Ashibetsu coals
International Journal of Coal Geology, 1994Abstract Smectite, K-smectite and illite/smectite (I/S) mixed-layer minerals are found as expandable clay minerals in the Paleogene coal seams of the Ashibetsu coal mine in the Ishikari coal field, Hokkaido, Japan. As K-smectite often exists in tuff, tuffaceous shale and coal near tuff, and only occasionally in shale, the K-smectite is simply thought
Tatsuo Kimura +2 more
openaire +1 more source
Applied Clay Science, 2009
Abstract To evaluate the influence of coexistent salt in the Mg–Si precursor for the hydrothermal synthesis of smectite, stevensite was synthesized hydrothermally from Mg–Si precursors with different salt concentrations. Prepared homogeneous Mg–Si precursors were washed with distilled water before hydrothermal treatment. The salt concentration of the
Hyun-Jeong Nam +4 more
openaire +1 more source
Abstract To evaluate the influence of coexistent salt in the Mg–Si precursor for the hydrothermal synthesis of smectite, stevensite was synthesized hydrothermally from Mg–Si precursors with different salt concentrations. Prepared homogeneous Mg–Si precursors were washed with distilled water before hydrothermal treatment. The salt concentration of the
Hyun-Jeong Nam +4 more
openaire +1 more source
Pathways of Smectite Illitization
Clays and Clay Minerals, 1986AbstractJunction probability diagrams show variation in both composition and layer arrangement in mixed-layer clay minerals. These diagrams can represent short-range and long-range ordered, random, and segregated interstratifications. Mineralogical analyses of illite/smectite from shale cuttings, bentonites, and hydrothermally altered tuffs define ...
Craig M. Bethke +2 more
openaire +1 more source
Expansion of Smectite by Hexadecyltrimethylammonium
Clays and Clay Minerals, 2002AbstractThe adsorption of hexadecyltrimethylammonium (HDTMA) in smectite was studied by adsorption isotherms, X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). Smectites that had reacted for 48 h with HDTMA cations equivalent to 0.2–3.0 times the cation exchange capacity (CEC) were converted to HDTMA-exchanged ...
Seung Yeop Lee, Soo Jin Kim
openaire +1 more source
Clays and Clay Minerals, 1981
AbstractTrioctahedral smectite and regularly interstratified chlorite/smectite in strata of the East Berlin Formation of the Connecticut Valley are largely restricted to black shale and gray mudstone deposited in alkaline, perennial lakes. The precursor of the mixed-layer clay appears to have been a smectite.
exaly +2 more sources
AbstractTrioctahedral smectite and regularly interstratified chlorite/smectite in strata of the East Berlin Formation of the Connecticut Valley are largely restricted to black shale and gray mudstone deposited in alkaline, perennial lakes. The precursor of the mixed-layer clay appears to have been a smectite.
exaly +2 more sources
Hydration Energies of Smectites
1985Abstract Dehydration isotherms of five smectites and one vermiculite saturated with Na, K, Mg, and Ca were used to calculate the hydration energies of clay minerals in different water-activity and cation-exchange conditions. As the water activity decreased, differences in hydration energies appeared to be dependent on the nature of ...
Y. Tardy, O. Touret
openaire +1 more source