搜索结果: 1-15 共查到“矿床学与矿相学 copper”相关记录19条 . 查询时间(0.051 秒)
Tribological Properties and Self-Repairing Effect of Palygorskite /Copper Nanocomposites as Lubricating Oil Additive
Nano Composite Nano-Copper Nano-Palygorskite Self-Repairing Film Wear
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2011/11/14
Palygorskite/copper nanocomposites were prepared in order to study the friction behaviour and self-repairing effect of HT200 tribopair. The friction and wear behaviors of the lubricant oil containing ...
Thermal analysis and Hot-stage Raman spectroscopy of the basic copper arsenate mineral
Copper Arsenate Olivenite Cornwallite Cornubite Clinoclase thermal stage Raman spectroscopy Euchroite
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2011/11/10
The thermal analysis of euchroite shows two mass loss steps in the temperature range 100–105 °C and 185–205 °C. These mass loss steps are attributed to dehydration and dehydroxylation of the mineral. ...
The Silistar Intrusive, Eastern Srednogorie Zone, Bulgaria: Structural Data and Potential for Porphyry Copper and Epithermal Systems
Eastern Srednogorie Bulgaria Silistar intrusion porphyry copper epithermal
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2009/7/8
The Late Cretaceous Silistar intrusion comprises of gabbros, gabbro-diorites to quartz-diorites and aplites, that were emplaced into a volcano-sedimentary succession of similar age. Structural data su...
Reactions of copper and cadmium ions in aqueous solution with goethite, lepidocrocite, mackinawite, and pyrite
copper and cadmium irons goethite lepidocrocite mackinawite andpyrite
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2012/3/31
TheuptakeofCuandCdinaqueoussolutionbyinteractionwiththesurfacesofcare-
fullysynthesized?nelysizedparticlesofgoethite,lepidocrocite,mackinawite,andpyrite
wasmeasuredasafunctionofinitialmetalconcentra...
Physico-Chemical Characterization and Catalytic Properties of Copper-Doped Alumina-Pillared Montmorillonites
Alumina Copper Copper Catalyst Montmorillonite Phenol Hydroxylation Pillared Clay
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2011/12/2
Abstract: Cu-doped alumina-pillared montmorillonite samples have been prepared and characterized with X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), electron spin resonance (ESR) and inductive...
Tschörtnerite, a copper-bearing zeolite from the Bellberg volcano, Eifel, Germany
Tschö rtnerite copper-bearing zeolite Bellberg volcano
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2012/3/31
The new mineral tscho¨ rtnerite, ideally Ca4(K,Ca,Sr,Ba)3Cu3(OH)8[Si12Al12O48]· x H2O, x $ 20, occurs as well-formed cubes up to a maximum size of 0.15 mm in a Ca-rich xenolith at the Bellberg volcano...
Preparation, Characterization and Electrochemistry of Synthetic Copper Clays
Chrysocolla Clay-modified Electrodes Copper Smectites Cyclic Voltammetry Synthetic Clay
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2011/12/8
Abstract: Hydrothermal treatment of aqueous mixtures of sodium hydroxide, copper chloride and excess sodium silicate (Si/Cu ≥ 2) at 150 °C produced blue powders. Scanning electron microscopy/energy di...
Migration of Cations in Copper(II)-Exchanged Montmorillonite and Laponite upon Heating
CEC Measurements Cu-Laponite Cu-Montmorillonite EPR Hofmann-Klemen Effect IR XPS
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2011/12/22
Abstract: Two clay minerals, a dioctahedral, Na-montmorillonite from Wyoming and a trioctahedral, synthetic Na-laponite, were exchanged by cupric (Cu(II)) ions and subsequently heated at 100 °C interv...
Hydrothermal Synthesis (250°C) of Copper-Substituted Kaolinites
Cu2+ Kaolinite Octahedral substitution Synthesis
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2011/12/28
To obtain Cu-kaolinites with a controlled range of chemical compositions, syntheses were performed by hydrothermally ageing gels with kaolinite stoichiometric compositions. Gels were prepared with sod...
Preservation of Clay Minerals in the Precambrian (1.1 Ga) Nonesuch Formation in the Vicinity of the White Pine Copper Mine, Michigan
Chlorite Diagenesis Illite Mixed-layer illite/smectite Nonesuch Formation White mica
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2011/12/28
The Middle Proterozoic (1.1 Ga) Nonesuch Formation, host of the stratiform copper deposit at White Pine, Michigan, consists of 200 m of principally dark grey clastic sediments which contain detritus o...
Periodic and Nonperiodic Stacking in Biotite from the Bingham Canyon Porphyry Copper Deposit, Utah
5-Layer mica polytypes Biotite Transmission electron microscopy Structural oscillation
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2011/12/27
Fine-grained biotite crystals within primary actinolite from a quartz monzonite body of the Bingham Canyon porphyry copper deposit, Utah, consist of 1M, 5M1, and 1Md polytype structures. HRTEM images ...
Natural and Synthetic Copper Phyllosilicates Studied by XPS
Chrysocolla Cu ESCA Kaolinite Smectite XPS
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2011/12/31
X-ray photoelectron spectroscopy (XPS) has been used to characterize the bonding state of Cu2+, Si4+, Al3+, and O2- ions in structural (octahedral and interlamellar) or adsorbed position in phyllosili...
Naturally-Occurring Silicates as Carriers for Copper Catalysts Used in Methanol Conversion
Bentonite Copper catalysts Methanol dehydrogenation Sepiolite
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2011/12/30
Bentonite- and sepiolite-supported copper catalysts have been prepared either by adsorption of Cu(II) from aqueous solutions of copper nitrate at pH …4.5 or by adsorption ofa [Cu(NH3)4]2+ complex from...
Cu2+ Interaction with Microcrystalline Gibbsite. Evidence for Oriented Chemisorbed Copper Ions
Adsorption Chemisorption Copper Electron spin resonance Gibbsite Infrared spectroscopy
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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...
Chemisorption of Copper on Hydroxy-Aluminum-Hectorite: An Electron Spin Resonance Study
Adsorption Aluminum Copper Electron spin resonance Hectorite Hydroxy-aluminum complex
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2012/2/6
Copper adsorption on a hydroxy-aluminum-hectorite complex (OH-Al-hectorite) at pH 4.5, 5.7, 7.4, and 7.8 was examined by means of electron spin resonance. The spectra of these samples were compared to...