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Brazilian Red Latosol a Typic Soil as an Exchanger: A Thermodynamic Study Involving Cu, Zn, Cd, Hg, Pb, Ca and Na
Adsorption Ionic Exchange Isotherm Langmuir Method Red Latosol Soil
2011/12/9
Abstract: The thermodynamic cationic exchange process involving divalent (Cu, Zn, Cd, Hg, Pb and Ca) and monovalent (Na) cations in Brazilian red Latosol soil was studied. Using a batchwise method, th...
Structure of synthetic Li2(Mg,Cu)Cu2[Si2O6]2: A unique chain silicate related to pyroxene
Structure synthetic Li2(Mg,Cu)Cu2[Si2O6]2 unique chain silicate pyroxene
2012/4/1
A unique Cu-bearing chain silicate, Li2(Mg,Cu)Cuz[Si206b was synthesized, and the
structure was determined by single-cry~tal X-ray diffraction techniques. The structure was5.7068(7), b =
found to be...
Polymerization of Benzene and Aniline on Cu(II)-Exchanged Hectorite Clay Films: A Scanning Force Microscope Study
Aniline Benzene Hectorite Scanning Force Microscopy
2011/12/27
The technique of scanning force microscopy (SFM) was used to study the nanometer-scale structure of Cu(II)-exchanged hectorite thin films. Supporting data were also obtained from Electron Spin Resonan...
Medenbachite, Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2, a new mineral species: Its description and crystal structure
Medenbachite Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2 mineral species crystal structure
2012/4/5
Medenbachite occurs in association withmixite, preisingerite, alunite, goethite, reichen-bachite, and malachite in a silicified barite vein from Reichenbach near Bensheim, Oden-wald, Hesse, Germany. I...
Bechererite, (Zn,Cu)6Zn2(OH)13[(Si,S)(O,OH)4]2, a novel mineral species from the Tonopah-Belmont mine, Arizona
Bechererite (Zn,Cu)6Zn2(OH)13[(Si,S)(O,OH)4]2 Tonopah-Belmont mine
2012/4/5
Bechererite is a new mineral found ondump material from the Tonopah-Belmont mine, Maricopa County, Arizona, U.S.A. It occurs as thin elongated crystals, commonly in hemispherical aggregates, and it is...
Migration of Cu Ions in Cu Montmorillonite Heated With and Without Alkali Halides
Cu-montmorillonite K-halide IR and ESR spectra
2011/12/28
Cu montmorillonite heated with or without potassium halide was studied by IR and ESR spectroscopy, supplemented by XRD measurements, microprobe and chemical analyses. It appears that on heating Cu mon...
The Effect of Dissolved Ligands on the Sorption of Cu(II) by Ca-Montmorillonite
Adsorption β-alanine Copper Ethylenediamine Malonic acid Modeling Montmorillonite
2011/12/28
The effects of three organic ligands on the adsorption of copper on Ca-montmorillonite were studied. The results indicate that these effects include three different processes: Enhanced uptake of posit...
The Effect of Dissolved Ligands upon the Sorption of Cu(II) by Ca-Montmorillonite
Adsorption β-alanine Copper Ethylenediamine Malonic acid Modeling Montmorillonite
2011/12/30
The effect of three organic ligands on the adsorption of Cu on Ca-montmorillonite was studied. The results indicate that these effects include three different processes: Enhanced uptake of positively ...
Chemisorption of Benzene on Cu-Montmorillonite as Characterized by FTIR and 13C MAS NMR
Benzene chemisorption 13C MAS NMR Cu-montmorillonite FTIR Poly-p-phenylene
2011/12/1
Abstract: Sorption of benzene onto Cu-montmorillonite was characterized by Fourier transform infrared (FTIR) spectroscopy and 13C magic angle spinning nuclear magnetic resonance (MAS NMR). Under anhyd...
Polymerization and Transalkylation Reactions of Toluene on Cu(II)-Montmorillonite
FTIR GC/MS Gel permeation chromatography Montmorillonite Polymerization Toluene Transalkylation
2011/12/31
Products resulting from the reaction of toluene with Cu(II)-montmorillonite were analyzed using GC/MS, HPLC/MS, GPC, and FTIR methods. Numerous oligomers of toluene were observed, extending at least a...
D-Glucosamine Sorption on Cu(II)-Montmorillonite as the Protonated and Neutral Species
Adsorption Copper D-glucosamine Electron spin resonance Infrared spectroscopy Montmorillonite Protonation
2012/1/6
The adsorption of D-glucosamine (2-amino-2-deoxy-D-glucose) in the protonated or neutral form on homoionic Cu2+-bentonite was investigated by infrared (IR) and electron spin resonance (ESR) spectrosco...
Optically Selective Adsorption of α-Amino Acids on Montmorillonite-Cu-l-Lysine Complexes in High-Pressure Liquid Chromatography
Adsorption Amino acid Cu-l-lysine High-pressure liquid chromatography Montmorillonite Optically active ligands
2012/1/11
Optically active cationic complexes adsorbed on montmorillonite can be used for the resolution of racemic mixtures. Montmorillonite-Cu-lysine systems were used as a solid phase in high-pressure liquid...
Hydroxy-Cu-Vermiculite Formed by the Weathering of Fe-Biotites at Salobo, Carajas, Brazil
Cation-exchange capacity Copper Intergrade Manganese oxide Supergene enrichment Vermiculite Weathering
2012/1/12
Weathering of a copper stratiform deposit (schist) at Salobo, Brazil, has produced two distinct Cu-bearing minerals from a biotite parent: vermiculite and a manganese oxide containing as much as 13% a...
Co, Cu, Ni, and Ca Sorption by a Mixed Suspension of Smectite and Hydrous Manganese Dioxide
Adsorption Analytical transmission electron microscopy Birnessite Cation exchange Manganese oxide Montmorillonite Transition metals
2012/1/13
The sorption properties of Co, Cu, Ni, and Ca were studied in a mixed mineral suspension of synthetic MnO2 and Wyoming montmorillonite. The distribution of the sorbed cations between the two solid pha...
Reaction of Benzene with Cu(II)- and Fe(III)-Exchanged Hectorites
Adsorption Benzene Copper Electron paramagnetic resonance Free radical Hectorite ?Iron
2012/2/6
The reaction of benzene with exchangeable Cu(II) and Fe(III) in hectorite clay films was studied by electron paramagnetic resonance (EPR). The reaction when carried out in a sealed tube between 60?and...