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K-Vacancy Production in the Collision of Highly Charged Relativistic Ions With Heavy Atoms
K-Vacancy Heavy Atoms Highly Charged Relativistic Ions
2010/4/15
A general expression for the cross section of the inelastic collision of relativistic highly charged ion with heavy (relativistic) atoms is obtained using the generalized eikonal approximation. In the...
Effect of Interaction Between Clay Particles and Fe3+ Ions on Colloidal Properties of Kaolinite Suspensions
Colloid Electron Microscopy Flocculation Iron Kaolinite Sedimentation Zeta Potential
2011/12/22
Abstract: Fine kaolinite suspensions were mixed with unaged or aged FeCl3 in this experiment. The interaction between clay particles and Fe3+ hydrolysis products was studied by transmission electron m...
Elastic Scattering of 344.5 MeV 12C Ions From 11B Nucleus
Elastic Scattering 344.5 MeV 12C Ions 11B Nucleus
2010/4/19
The angular distribution of the elastic scattering differential cross section of 344.5 MeV 12C ions from 11B nucleus is calculated and compared with the experimental data as well as the previously pub...
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...
Instability of SiO2 Colloids and Sorption of Ca2+ Ions
Ca2+ induced instability Ca2+ sorption Flocculation Gelation Precipitation Silica colloids Two distinct flocculates
2011/12/28
SiO2 sols were made unstable by addition of Ca2+ ions. The resulting states of instability were classified as gelation, flocculation, and precipitation by means of observation, by checking the Tyndall...
Effect of the Presence of Aluminum ions in Iron Solutions on the Formation of Iron Oxyhydroxides (FeOOH) at Room Temperature Under Acidic Environment
Akaganeite Aluminum Hydroxy-aluminum ions Iron hydrolysis Transmission electron microscopy X-ray diffraction
2011/12/29
The hydrolytic behavior of Fe solutions at room temperature under acidic conditions was investigated. In the presence of Al ions, with Cl and NO3 as associated anions, the Fe hydrolysis began almost i...
Size of Mica Domains and Distribution of the Adsorbed Na-Ca Ions
Electrophoretic mobility Mica domains Photon correlation spectroscopy
2011/12/29
Mica domains have received less attention in the literature than smectite quasi-crystals. This study was conducted to determine whether mica crystals form domains in suspension, the conditions in whic...
Charge Reversal of Kaolinite by Hydrolyzable Metal Ions: An Electroacoustic Study
Adsorption Cadmium Charge reversal Cobalt Copper Electroacoustics Electrokinetics Kaolin Metal ions (hydrolyzable)
2011/12/31
Electroacoustic measurements at 1 MHz, using the Electro-Sonic Amplitude (ESA), on a kaolinite suspension provide a ready method for following the adsorption of hydrolyzable metal ions onto the clay s...
THE COORDINATION OF ALUMINUM IONS IN THE PALYGORSKITE STRUCTURE
Al-coordination MAS-NMR Palygorskite
2011/11/4
Abstract--NMR spectra ofPF1 - 1 Floridan palygorskite strongly suggest that AI 3§ occurs only in octahedral coordination. X-ray microanalysis of the palygorskite fibers indicate a chemical composition...
The Coordination of Aluminum Ions in the Palygorskite Structure
Al-coordination MAS-NMR Palygorskite
2011/12/31
NMR spectra of PF1-1 Floridan palygorskite strongly suggest that Al3+ occurs only in octahedral coordination. X-ray microanalysis of the palygorskite fibers indicate a chemical composition defined by ...
Distribution of Ca and Na Ions in Dioctahedral Smectites and Interstratified Dioctahedral Mica/Smectites
Demixing Exchangeable cations Interstratified mica/smectite Relative humidity Smectite Water X-ray powder diffraction
2011/11/30
Abstract: The structures of 11 smectites and 2 interstratified mica/smectites containing mainly Ca2+ and Na+ as exchangeable cations in variable ratio were studied under a relative humidity of about 4...
Cu2+ Interaction with Microcrystalline Gibbsite. Evidence for Oriented Chemisorbed Copper Ions
Adsorption Chemisorption Copper Electron spin resonance Gibbsite Infrared spectroscopy
2011/11/25
Abstract: The ability of a high surface-area gibbsite to adsorb Cu2+ was studied using a Cu2+ ion-selective electrode, electron spin resonance, infrared spectroscopy, and electron microscopy. The gibb...
Effect of Exchangeable Ions and Ionic Strength on Boron Adsorption by Montmorillonite and Illite
Adsorption Boron Cation exchange Illite Ionic strength Montmorillonite
2012/2/7
The effects of exchangeable Na and Ca and the ionic strength of NaCl and CaCl2 solutions on the boron adsorption by the Na and Ca forms of montmorillonite and illite at pH 9 were studied. The boron ad...
Interaction of Uranyl Ions with Synthetic Zeolites of Type A and the Formation of Compreignacite-Like and Becquerelite-Like Products
Becquerelite Compreignacite Synthesis Uranium X-ray powder diffraction Zeolite A
2012/2/7
Uranyl acetatye solutions, ranging in concentration from about 100 ppm to 3700 ppm, were re-acted with the Na-, K-, and Ca- forms of zeolite A. The crystalline products from the Na- and K-A zeolites r...
Interpretation of the Variability of Selectivity Coefficients for Exchange Between Ions of Unequal Charge on Smectites
Cation exchange Cation selectivity Entropy Mass action Selectivity coefficient Smectite
2012/2/9
Ion-exchange experiments in expanding clay minerals conducted over a wide range of surface ionic compositions and ionic strength produce variable mass-action selectivity coefficients. When the exchang...