搜索结果: 1-15 共查到“矿床学与矿相学 Ion”相关记录32条 . 查询时间(0.1 秒)
Fast removal of ammonium ion using a hydrogel optimized with response surface methodology
Adsorption Ammonium ion Box–Behnken design Hydrogel Response surface methodology
2011/12/14
Response surface methodology (RSM) based on a three-level, three-variable, Box–Behnken design (BBD) was used to optimize the preparation parameters of a hydrogel consisted of polyvinyl alcohol (PVA),a...
Kinetic and isothermal studies of lead ion adsorption onto palygorskite clay
Lead Palygorskite clay Adsorption capacity Kinetic Isotherm
2011/11/7
The use of a natural palygorskite clay for the removal of Pb(II) from aqueous solutions for different contact times, pHs of suspension, and
amounts and particle sizes of palygorskite clay were invest...
Ion Exchange of Zeolite Na-Pc with Pb2+, Zn2+, and Ni2+ Ions
Heavy Metals Ion Exchange Perlite Selectivity Selectivity Coefficient Zeolite Pc Zeolitization
2011/12/6
Abstract: This paper examines the ion-exchange properties of synthetic zeolite Na-Pc, which was produced from perlite-waste fines and has a SiO2:Al2O3 ratio of 4.45:1 and a cation-exchange capacity (C...
Characterization of carbon compounds on a pyroxene surface from a gabbro xenolith in basalt by time-of-flight secondary ion mass spectrometry
Characterization carbon pyroxene surface gabbro xenolith time-of-flight
2012/3/31
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) yields mass spectra of the upper several monolayers of an analytical surface. The applicability of TOF-SIMS to the characterization of C compo...
Si-Al ordering in leucite-group minerals and ion-exchanged analogues: An MAS NMR study
Si-Al leucite-group minerals ion-exchanged analogues MAS NMR study
2012/4/6
Twoseriesofleucitegroupmaterials,withK,Rb,andCsasextra-frameworkcations,havebeensynthesizedbyionexchangefromanaturalwell-orderedanalciteandanatural29 27disorderedleucite.Siand AlMASNMRdatafortheanalci...
Pyroxene as a recorder of cumulate formational processes in asteroids, Moon, Mars, Earth: Reading the record with the ion microprobe
Pyroxene cumulate formational processes asteroids Moon Mars Earth ion microprobe
2012/4/5
Igneous cumulate rocks provide an important record ofplanetary magmatism, but there are pitfalls in their interpretation. Cumulus minerals mayreact withthe trapped meltand other cumulus phases during ...
Characterization of Untreated and Alkylammonium Ion Exchanged Illite/Smectite by High Resolution Transmission Electron Microscopy
Alkylammonium Clays Diagenesis Illite Interstratification Smectite Transmission Electron Microscopy
2011/12/28
High resolution transmission electron microscopy (HRTEM) have been performed on dispersed portions of one R > 1 and two R3 illite/smectite (I/S) samples from Silurian K-bentonites. R > 1 sample was st...
Layer Charge of the Expandable Component of Illite/Smectite in K-Bentonite as Determined by Alkylammonium Ion Exchange
Alkylammonium Bentonite Clays Diagenesis Illite Illite/smectite Layer charge Smectite
2011/12/27
The charge of the expandable interlayers in a series of fourteen diagenetic illite/smectites (I/S) from lower Paleozoic K-bentonites was determined by the alkylammonium ion exchange method. The magnit...
Use of Competitive Ion Exchange for Intercalation of Montmorillonite with Hydroxy-Aluminum Species
Competitive ion exchange Hydroxy-Al Intercalation Montmorillonite Pillared clays Thermal stability X-ray powder diffraction
2012/1/4
Three montmorillonite samples, from Wyoming (particle size <0.2 µm, 4.6 wt. % Fe2O3), Greece (<14 µm, 6.5 wt. % Fe2O3), and Poland (0.5 wt. % Fe2O3, two fractions <2 µm and 2–10 &mic...
Reactions of Thiophene and Methylthiophenes in the Interlayer of Transition-Metal Ion-Exchanged Montmorillonite Studied by Resonance Raman Spectroscopy
Adsorption Interlayer reaction Montmorillonite Polymerization Raman spectroscopy Thiophene
2011/11/25
Abstract: The adsorption and reaction of thiophene and methylthiophenes in the interlayer of Cu2+- and Fe3+-montmorillonites were investigated by resonance Raman spectroscopy. Thiophene and 3-methyl-t...
Ion Exchange, Thermal Transformations, and Oxidizing Properties of Birnessite
Birnessite Bixbyite Buserite Cation exchange Cryptomelane Hausmannite Hollandite Oxidation Thermal treatment
2012/1/12
Synthetic sodium birnessite, having a cation-exchange capacity (CEC) of 240 meq/100 g (cmol/kg) was transformed into Li, K, Mg, Ca, Sr, Ni, and Mn2+ cationic forms by ion exchange in an aqueous medium...
Methyl t-Butyl Ether (MTBE) Production: A Comparison of Montmorillonite-Derived Catalysts with an Ion-Exchange Resin
Amberlyst 15 Catalysis Chlorhydrol Ion-exchange resin Methyl t-butyl ether Montmorillonite
2012/1/13
Montmorillonite-based catalysts were compared with an acidic ion-exchange resin of the type used industrially for the production of methyl t-butyl ether (MTBE) from methanol and isobutene or t-butanol...
Reactions of the Conjugated Dienes Butadiene and Isoprene Alone and with Methanol over Ion-Exchanged Montmorillonites
Butadiene Catalysis Diels-Alder reaction Gas-liquid chromatography Isoprene Methanol Montmorillonite Transition metal
2012/1/12
The reactions of simple conjugated dienes over divalent and trivalent transition metal-exchanged montmorillonites yield, in the absence of nucleophiles, a variety of products. Some of these products a...
Effect of Ion-Pair Formation on Boron Adsorption by Kaolinite
Adsorption Boron Ion pair Ion speciation Kaolinite
2012/2/2
Boron adsorption on 2-0.2-祄 size fractions of kaolinite at 25??2癈 at pH values between 6.0 and 10.5 was studied. The kaolinite sample was pretreated to remove any surface oxide and hydroxide coatings....
Surface Potentials Derived from Co-Ion Exclusion Measurements on Homoionic Montmorillonite and Illite
Co-ion exclusion Double-layer potential Illite Montmorillonite Surface charge
2012/2/3
Simple equations are presented which allow double-layer potentials of clays to be derived from co-ion exclusion measurements in monovalent and divalent electrolyte solutions. These equations have been...