Results 11 to 20 of about 614 (173)

Effect of synthesis duration on heat and charge transport in polycrystalline CuCr1-xMgxO2

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2022
Magnesium-doped polycrystalline ceramic samples of cooper chromite (I) have been prepared by solid phase synthesis. Phase composition and crystal structure of synthesis have been investigated by X-ray diffraction.
В.А. Кульбачинский   +4 more
doaj   +1 more source

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2011
In this review article various applications and preparation methods of copper chromite catalysts have been discussed. While discussing it is concluded that copper chromite is a versatile catalyst which not only catalyses numerous processes of commercial ...
Ram Prasad, Pratichi Singh
doaj   +1 more source

Synthesis of copper chromite nanocomposites for electrochemical sensor application

open access: yesCurrent 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
doaj   +1 more source

Karakterisasi Katalis Cu-Cr /Kieselguhr

open access: yesReaktor, 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
doaj   +1 more source

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]

open access: yesشیمی 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
doaj   +1 more source

Performance evaluation of commercial copper chromites as burning rate catalyst for solid propellants [PDF]

open access: yesJournal 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  

Flotation enrichment of resistant gold ores [PDF]

open access: yesE3S 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
doaj   +1 more source

Catalyst in Basic Oleochemicals

open access: yesBulletin 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
doaj   +1 more source

The Effect of Titanium Oxide Additions on the Phase Chemistry and Properties of Chromite-Magnesia Refractories

open access: yesCeramics, 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
doaj   +1 more source

Studies on composite solid propellant with tri-modal ammonium perchlorate containing an ultrafine fraction

open access: yesDefence 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
doaj   +1 more source

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