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Preparation and Photocatalytic Activity of N-TiO2/Sepiolite Nanocomposite
Methylene Blue Modification Photocatalyst Speiolite Titanium Dioxide
2011/11/22
To utilize visible light and separate of TiO2 nanoparticles more efficiently in photocatalytic reactions, nitrogen doped TiO2/sepiolite composites (N-TiO2/sep) with different nitrogen contents were pr...
Activity Degree Evaluation of Glacial Debris Flow along International Karakorum Highway (KKH) Based on Fuzzy Theory
Activity Degree Evaluation Fuzzy Evaluation Method Glacial Debris Flow International Karakorum Highway (KKH)
2011/12/20
The area of international Karakorum Highway(KKH), is an area with dense and frequent glacial debris flow disasters due to unique geology, geomorphology and landform conditions,which connects northern ...
Experimental determination of CO2-H2O activity-composition relations at 600-1000 °C and 6-14 kbar by reversed decarbonation and dehydration reactions
CO2-H2O activity-composition relations reversed decarbonation dehydration reaction modified Redlich-Kwong
2012/4/1
Activity-composition relations in CO -H O solutions were determined at 6, 10, abroad temperature-fluid composition ranges from 70 reversed determinations of three simple-systemdecarbonation and dehydr...
Effect of Acid Activation on the De-Tert-Butylation Activity of Some Jordanian Clays
Bentonite Butylphenol Catalyst Clay Debutylation Kaolin Kaolinite Montmorillonite
2011/12/7
Abstract: Jordanian natural kaolin and bentonite show good catalytic activity towards debutylating 2-tert-butylphenol, and varying debutylation vs. isomerization selectivity after acid activation. The...
Relating formulations of the thermodynamics of mineral solid solutions: Activity modeling of pyroxenes, amphiboles, and micas
mineral solid solutions pyroxenes amphiboles andmicas
2012/3/30
Inathermodynamicdescriptionofamineralsolidsolution,itiscustomarytoselecta
minimalgroupofend-membersthatconstitutesanindependentset,andyetinpractical
calculationsitcommonlyoccursthatadifferentindepen...
Effects of microbial activity on the 18O of dissolved inorganic phosphate and textural features of synthetic apatites
microbial activity inorganic phosphate textural features synthetic apatites
2012/4/1
Laboratory growth experiments were conducted to investigate the oxygen isotope effects associated with bacterial metabolism of phosphatic compounds commonly available in nature. The observed oxygen is...
Mineralogical Transformation of Bioweathered Granitic Biotite, Studied by HRTEM: Evidence for a New Pathway in Lichen Activity
Back-scattered Electrons Biotite Bioweathering Granite High-Resolution Transmission Electron Microscopy (HRTEM) Lattice-Fringe Images Lichens Vermiculite
2011/12/8
Abstract: The question of whether clay minerals can be biogenically transformed as a result of lichen activity at the lichen-rock interface remains unresolved. We applied several microscopical and ana...
Computer simulation of the infrared and Raman activity of pyrope garnet, and assignment of calculated modes to specific atomic motions
Computer simulation Raman activity of pyrope garnet specific atomic motions
2012/4/1
The lattice dynamics computer code PARAPOCS was successfully used to calculate the 240 vibrational frequencies of pyrope garnet, Mg3Al2Si3O12, at ambient conditions. The atomic displacement vectors (e...
Reversed determination of the reaction: Phlogopite + quartz = enstatite + potassium feldspar + H2O in the ranges 750-875 篊 and 2-12 kbar at low H2O activity with concentrated KCl soluctions
Reversed determination Phlogopite + quartz = enstatite + potassium feldspar + H2O H2O KCl soluctions
2012/3/31
The reaction of phlogopite plus quartz to enstatite, potassium feldspar, and aqueous fluid in the system KMASH-KCl was reversed at 2?2 kbar and 750?75 8C and at low H2O activities by reversal of the H...
Properties and Catalytic Activity of Acid-Modified Montmorillonite and Vermiculite
Acidity Benzene Catalyst Characterization Hydrocarbons Isopropylation Methanol Dehydration Montmorillonite Vermiculite
2011/12/23
Abstract: The acidic properties of acid-modified montmorillonite and vermiculite were determined by pyridine and ammonia adsorption to correlate with the alkylating and dehydrating activity of the act...
Morphological and Chemical Features of Bioweathered Granitic Biotite Induced by Lichen Activity
Aspicilia intermutans Biotite Bioweathering Granite Lichens Parmelia conspersa
2011/12/27
To study the physico-chemical activity of lichens on micaceous components of granitic rocks, samples covered by thalli of Parmelia conspersa (Ehrht) Ach. and Aspicilia intermutans (Nyl.) Arn. were col...
Synthesis and Paragenesis of Na-Beidellite as a Function of Temperature, Water Pressure, and Sodium Activity
Beidellite Electron microprobe Hydrothermal synthesis Kaolinite Paragonite Pyrophyllite Scanning electron microscopy X-ray diffraction
2011/12/30
In the chemical system Na2O-Al2O3-SiO2-H2O, the stability field of Na-beidellite is presented as a function of pressure, temperature, and Na- and Si-activity. Na0.7-beidellite was hydrothermally synth...
Compaction and Swelling of Ca-Smectite in Water and in CaCl2 Solutions: Water Activity Measurements and Matrix Resistance to Compaction
Calcium chloride Compaction Matrix resistance Rheology Smectite Swelling Water activity
2011/11/30
Abstract: Direct water-activity measurements were made for calcium-smectite-CaCl2 mixtures. The samples used were prepared by high-pressure filtration and had water contents <0.60% by weight of clay. ...
Activity/Composition Relations among Silicates and Aqueous Solutions: II. Chemical and Thermodynamic Consequences of Ideal Mixing of Atoms on Homological Sites in Montmorillonites, Illites, and Mixed-Layer Clays
Activity Atom mixing Illite Mixed layers Montmorillonite Thermodynamics
2012/2/6
The activities of thermodynamic components of clay minerals corresponding in composition to pyrophyllite, muscovite, paragonite, and margarite were computed from chemical analyses reported in the lite...
Surface Properties of Sepiolite from Amboseli, Tanzania, and Its Catalytic Activity for Ethanol Decomposition
Adsorption Catalysis Ethanol Pore size Sepiolite Surface area
2012/2/7
The catalytic activity of sepiolite from Amboseli, Tanzania, for the dehydration and dehydrogenation of ethanol at 150°–300°C has been studied using a flow reactor. Both reactions occur, but the catal...