The doping of rhenium into molybdenum disulfide was achieved by Aerosol Assisted Chemical Vapour Deposition (AACVD) from single source precursors. Rhenium can be studied as a model for ...Web
ادامه مطلب
The effect of FeCl 3 concentration on the removal of impurities and leaching ratio of molybdenum and rhenium were investigated under the conditions of ... (2016) Separation of rhenium from lead-rich molybdenite concentrate via hydrochloric acid leaching followed by oxidative roasting. Metals—Open Access Metall J 6(11):282. …Web
ادامه مطلب
Studying the simultaneous enrichment of rhenium and molybdenum in the roasting leaching solution of molybdenum concentrate with low rhenium content and …Web
ادامه مطلب
Rhenium and molybdenum are valuable metals present in the earth's crust in very low concentration and are increasingly used in industry thanks to their multiple properties, but due to the harmful aspects of the production process, there is a need to develop systems of concentration or purification of salts of these elements.Web
ادامه مطلب
Molybdenum (Mo) and rhenium (Re) are highly valuable metal ions for industry because their alloys with other metals provide excellent properties such as high resistance to corrosion and elevated temperatures, hardness, weldability and toughness. ... However, to achieve higher extraction percentages two options could be followed. First ...Web
ادامه مطلب
Molybdenite, especially from porphyry copper ore deposits, is the host rhenium-bearing mineral. In molybdenum concentrates, the rhenium contents are typically in the range of 200–800 ppm, and its content in copper concentrates is about 10–50 ppm (Gabashi, 1997, Nadler, 2012).Web
ادامه مطلب
Rhenium concentration in scrubbed liquor remains significantly less (30–200 mg/L) than Mo(VI) concentration []; however, the high economic value of rhenium over molybdenum is more attractive to the metallurgists in recent time.Flue-dusts' leaching in water/dil. H 2 SO 4 followed by ion exchange and solvent extraction are the major …Web
ادامه مطلب
Molybdenum-Rhenium is a new biomaterial to the orthopedic market that is exciting because of its biocompatibility, MRI and CT compatibility, and corrosion resistance. Its combination of high tensile strength and ductility allows implanted devices to be designed with a low profile. It has excellent osteo-integration properties and very low ...Web
ادامه مطلب
From Fig. 1 A it is found that the rhenium absorption capacities of 201 × 7 and D216 are almost the same, whilst Fig. 1 B shows that resin 201 × 7 has lower absorption of molybdenum than D216. This shows that 201 × 7 has better selectivity for Re than resin D216.This is because resin 201 × 7 is a gel with face to face holes and a styrene …Web
ادامه مطلب
Molybdenum, was eluted with a 2.5-M NaOH solution, after which rhenium was eluted with a 7-M HCl solution. The method was improved by Melache and Preuss, …Web
ادامه مطلب
The chemical and physical properties of rhenium render it a highly demanded metal for advanced applications in important industrial fields. This very scarce element occurs mainly in ores of porphyry copper-molybdenum deposits associated with the mineral molybdenite, MoS2, but it has also been found in granite pegmatites and quartz veins as well as in …Web
ادامه مطلب
10 m g/g) followed by sintering in hydrogen (dew point, ... Molybdenum–rhenium alloys have a lower ductile-to-brittle transition temperature than molybdenum, which is advantageous in ...Web
ادامه مطلب
The rhenium could also be stripped by sulfuric acid solution (4 mol/L). In 2010, Jiang et al. prepared a novel trialkyl amine (N235) extractive resin and studied its extraction behavior of rhenium and molybdenum [44]. The influencing factors such as extraction time, concentrations of Re and Mo, pH of the extraction medium were investigated.Web
ادامه مطلب
Mixed molybdenum–rhenium oxides (Mo x Re 1−x O y, 0.6 < x < 1) were deposited onto ITO from acidic peroxo-polymolybdo-perrhenate solutions. At low overpotentials >−0.3 V, deposited films contain <1% Re but are rich in Mo IV, Mo V, and Mo VI. This suggests that perrhenate acts as a redox mediator to facilitate the deposition of …Web
ادامه مطلب
Copper and molybdenum rhenium-containing concentrates and by-products are exposed to oxidative roasting while sublimating rhenium, sintering molybdenum concentrate with soda or sodium sulfide, followed by leaching and precipitation. Mo–Re concentrate may be subjected to nitric acid autoclave leaching without roasting, and …Web
ادامه مطلب
During the first time interval (Day 0 to 1), low levels of molybdenum and rhenium ions are detected (<0.3 μg/cm2 day) followed by a rapid reduction in the ion release rates to <0.05 μg/cm2 day ...Web
ادامه مطلب
The resin-in-leaching solution (RIL) followed by selective elution processes is an effective process for rhenium recovery. However, the long leaching and absorbing …Web
ادامه مطلب
The global Rhenium and Molybdenum market was valued at US$ 5455 million in 2022 and is projected to reach US$ 5893.3 million by 2029, at a CAGR of 1.1% during the forecast period. ... followed by ...Web
ادامه مطلب
Rhenium's maximum extraction was 93.8 % at pH = 0.5, [TBP] = 2.54 mol/L and, organic to aqueous phase ratio of 2:1, and molybdenum extraction under these conditions was nearly 40 % on average.Web
ادامه مطلب
World mine production of rhenium from the main known sources in 2012 has been estimated at about 44.8 tonnes. Porphyry deposits accounted for roughly 85 to 90 per cent of primary rhenium ...Web
ادامه مطلب
The selective extraction of rhenium from the leach liquor of molybdenite roasting flue-dust and its subsequent stripping were investigated using the solvent extraction technique. In this study, tri-butyl phosphate (TBP) as organic extractant in kerosene and metals bearing solution (in mg/L: 6042 Mo, 208 Re, 534 Cu, 1982 Fe, 32 Mg, and 19 Pb) …Web
ادامه مطلب
In the inflammatory condition (H2O2 solution), there was a transient increase in the release of molybdenum and rhenium ions, followed by return to baseline ion release rates (Days 2 to 4), with further reduction to low steady state rates of ~0.01 μg/cm2 day (Days 4 to 8).Web
ادامه مطلب
A common method to improve the mechanical properties of traditionally manufactured molybdenum is by alloying with rhenium. Rhenium is soluble in …Web
ادامه مطلب
Molybdenum (Mo) and rhenium (Re) are strategic key metals for the development of modernization. In nature, 99 wt.% of Re is associated with molybdenite minerals via the form of isomorphism, and the element abundance of Mo (about 1.1–1.5 ppm) and Re (about 0.0004–0.0026 ppm) is tremendous in the continental crust.Web
ادامه مطلب
Molybdenum (Mo) is a valuable element and has a wide variety of industrial applications. Mo is an alloying agent in stainless steel [32]. Mo is used to make some missile and aircraft parts and is ...Web
ادامه مطلب
Separation of molybdenum and rhenium by extraction with mixtures of trioctylamine and Aliquat 336 followed by selective stripping. HydrometaUurgy, 4: 51--55. Molybdenum and rhenium may be co-extracted from acidic media by a mixture of trioctylamine (3.2--4.5%) and Aliquat 336 (0.5--1.8%) in kerosene/5% iso-octanol.Web
ادامه مطلب
Chile has the world's largest Rhenium reserve followed by Peru, USA, and Kazakhstan [10]. Re, for commercial purposes, is extracted from molybdenum roaster-flue dust found in copper-sulfide ores. It does not exist in nature freely or in the form of compounds along with any mineral ore deposits [6].Web
ادامه مطلب
Molybdenum enzymes were known to be oxidized by simple sulfites, suggesting that sulfites might be used as an oxo-acceptor ... Abu-Omar et al. propose a mechanism in which condensation of the diol onto the reduced MDO forms the rhenium mono-oxo-diolate and is followed by metallaoxetane formation and olefin extrusion in a …Web
ادامه مطلب
The effect of the rhenium addition to molybdenum in powder metallurgy sheet product near and exceeding the saturation point of rhenium in molybdenum was investigated. Alloys of 41,44.5, 47.5 and ...Web
ادامه مطلب
Rhenium and Molybdenum Market: Competitive Landscape. The competitive landscape of the Rhenium and Molybdenum Market is a crucial focus of our analysis. We have conducted an exhaustive examination ...Web
ادامه مطلب
@article{osti_4154624, title = {Determination of rhenium in molybdenum by neutron activation}, author = {Samadi, A A and Fedoroff, M}, abstractNote = {The determination of rhenium in molybdene is achieved by thermal neutron activation. Rhenium is separated by an extraction in basic medium followed by an ion-exchange in thiocyanate medium.Web
ادامه مطلب
The adsorption followed Langmuir model and quasi-second-order kinetic model, indicating that the adsorption was monolayer homogeneous chemisorption. ... (DOA). Cao et al. (2009) selectively extracted rhenium from alkaline solutions containing rhenium and molybdenum by solvent extraction using a mixture of tributyl phosphate and …Web
ادامه مطلب