Results 11 to 20 of about 595 (174)
Combustion and Pyrolysis EA-IRMS Techniques to Determine the δ<sup>2</sup>H of Diamonds. [PDF]
Rapid Commun Mass SpectromABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
Fourel F +4 more
europepmc +2 more sources
Synthesis of copper chromite nanocomposites for electrochemical sensor application
Current Research in Green and Sustainable Chemistry, 2021 The Copper Chromite Nanocomposites (CuCr2O4 Nanoparticles) was synthesised through hydrothermal technique. Several methods, including UV–visible, powder X-ray diffraction and Fourier transform infrared spectroscopy were employed to characterise the ...
S.R. Priyanka, K.P. Latha
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Karakterisasi Katalis Cu-Cr /Kieselguhr
Reaktor, 2017 Copper-chromite active metal catalyst was prepared by using impregnation method with kieselguhr (Al2O3SiO2) as supporting material. The content of metal active was 20% with 1:1 proportion of complex metal Cu : Cr.
Galuh Widiyarti
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Synthesis of copper chromite nanoparticles by co-precipitation methodand and study of the effect of Cu(II)/Cr(III) mole ratio, temperature and surfactant on the structure, morphology and size of it [PDF]
شیمی کاربردی روز, 2017 In this work, we used co-precipitation method for synthesis of coper chromite(CuCr2O4.CuO). Three mole ratios of Cu2+/Cr3+ (0.4, 0.7 and1.0) was used in order to investigate the effect of these mole ratios on the phase, morphology and size of particles ...
Moslem Setoodehkhah, ahed zare
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Production and Characterization of Magnesium‐Doped Copper Chromite Fibers
physica status solidi (a), 2017 In this study, Mg‐doped CuCr1−xMgxO2 (x = 0, 0.01, 0.03, 0.05) fibers are synthesized via electrospinning process followed by a two‐step heat treatment in air and Ar atmospheres. The produced samples are all crystalline with a fiber diameter ranging from 120 to 140 nm.
Ismail C. Kaya, Hasan Akyildiz
openaire +2 more sources
Flotation enrichment of resistant gold ores [PDF]
E3S Web of Conferences, 2020 Ores of the Vasilkovsky deposit include arsenopyrite, pyrite, pyrrhotite, marcasite, gold, chalcopyrite, sphalerite, galena, faded ore (tennantite)S, bismuthine, native bismuth, lellingite, molybdenite, cubanite, bornite, antimonite, relict minerals ...
Askarova Gulzhan +2 more
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Performance evaluation of commercial copper chromites as burning rate catalyst for solid propellants [PDF]
Journal of Aerospace Technology and Management, 2010 Copper chromites are well known as burning rate catalysts for the combustion of composite solid propellants, used as a source of energy for rocket propulsion.
Milton Faria Diniz +5 more
doaj
Catalyst in Basic Oleochemicals
Bulletin of Chemical Reaction Engineering & Catalysis, 2007 Currently Indonesia is the world largest palm oil producer with production volume reaching 16 million tones per annum. The high crude oil and ethylene prices in the last 3 – 4 years contribute to the healthy demand growth for basic oleochemicals: fatty ...
Eva Suyenty +5 more
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Ceramics, 2020 The microstructure of a direct-bonded chromite-magnesia refractory brick, typically used in copper and platinum converters, was modified by adding different amounts of nano-size TiO2 to the raw material mixture.
Johan PR De Villiers +2 more
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Defence Technology, 2017 Composite solid propellant is prepared using tri-modal Ammonium perchlorate (AP) containing coarse, fine and ultrafine fractions of AP with average particle size (APS) 340, 40 and 5 μm respectively, in various compositions and their rheological ...
K.V. Suresh Babu +4 more
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