Separation of rhenium from molybdenum, tungsten, vanadium, platinum metals and other elements by reduction and solvent extraction Reduction in 1 M H(2)SO(4) with liquid zinc amalgam and extraction with isopentanol from 3M H(2)SO(4), separates rhenium from almost all the interfering elements of importance in rhenium determination.

The conditions for the efficient separation of tungsten(VI) and rhenium (VII) on alumina were established. The distribution coefficients K d for tungstate and perrhenate anions, as well as the separation factors ?(? = KdWO42-/Kd ReO4-) were

The conditions for the efficient separation of tungsten(VI) and rhenium (VII) on alumina were established. The distribution coefficients Kd for tungstate and perrhenate anions, as well as the separation factors ( = KdWO4 2- /Kd ReO4 - )w ere determined using hydrochloric or nitric acid as the aqueous media. A solution of so- dium chloride in ...

The production of tungsten-rhenium solid solu-tion alloys is the most well-known method for improving the ductility of tungsten. This method was first reported by Geach et al.13 in the 1950s, and extensive research has been performed over the last 60 years.14-17 Addition of 1 wt.% rhenium is suffi-cient to decrease tungsten's DBTT ...

Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Rhenium Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Source: Tungsten and Rhenium - Applications

Metallurgy is a domain of materials science and engineering that encompasses both the processes involved in procuring metal from ores, typically termed extractive metallurgy, and the processes involved in working and shaping metals to produce usable materials and products, termed process metallurgy. Metallurgy can also be separated into ferrous metallurgy, which concerns the production and use ...

Filter 2 rhenium mines by commodity, disposition, development status, and record type in Los Angeles County, California. Quick Facts. Aluminum, Antimony, Arsenic, Asbestos, and Calcium mines located in Los Angeles County, California. ... Tungsten (9) Uranium (11) Vanadium (2)

B01D53/00 — Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, ... niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium;

Tungsten-Rhenium - Read online for free. Tungsten-Rhenium

Rhenium-188 (T1/2 = 17 h) is the decay product of its parent188W(T1/2 = 69 d) which is formed in a nuclear reactor during irradiation of tungsten targets. However, the isolation of rhenium from ...

Pure rhenium tube for sale! Purity: 99%(2N), 99.5%(2N5), 99.9%(3N), 99.95%(3N5), 99.99%(4N). Cross-section size: 0.5 - 200 mm, Wall thickness: 0.05 - 80 mm, Length: 30 - 6000 mm, Shape: Round, rectangular, square etc. Wholesale and buy pure rhenium tube, Fushel, China pure rhenium tube manufacturer and supplier! ... Tungsten Tube Chromium Tube ...

Separation technique of rhenium radioisotopes from a deuteron-irradiated tungsten target of natural isotopic composition has been developed. The irradiated tungsten powder was dissolved in a mixture of H2O2 and NaOH, the solution was passed through a column filled with an extraction chromatographic sorbent TEVA Resin. Rhenium was eluted with 4 M nitric acid. The separation procedure takes ...

osti.gov journal article: chromatographic separation of rhenium and tungsten. chromatographic separation of rhenium and tungsten (in russian)

In order to prevent the filament from breaking, 3-5% rhenium is often added to the doped tungsten wire, which is called tungsten rhenium wire. It can reduce the embrittlement transition temperature of tungsten to room temperature or below. The tungsten wire provided in this page has high purity and good quality. It can be well used in ...

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Separation of rhenium, tungsten and molybdenum by thin-layer chromatography Talanta. 1968 Dec;15(12):1486-8. doi: 10.1016/0039-9140(68)80212-7. Authors R Kuroda 1, K Kawabuchi, T Ito. Affiliation 1 Laboratory for Analytical Chemistry ...

Tungsten rhenium thermocouple wire is made by different composition of w re alloys- tungsten rhenium alloy can be used over a wide temperature range 196c to 276

The conditions for the efficient separation of tungsten(VI) and rhenium (VII) on alumina were established. The distribution coefficients Kd for tungstate and perrhenate anions, as well as the separation factors ( = KdWO4 2- /Kd ReO4 - )w ere determined using hydrochloric or nitric acid as the aqueous media. A solution of so- dium chloride in the pH range 2-6 was also examined. Under all the ...

Under all the tested experimental conditions. alumina is a much better adsorbent for tungsten than for rhenium. The obtained results indicated that the best separation of these two elements is achieved when 0.01-0.1 mol dm(-3) HCl or 1.0 mol dm(-3) HNO3 are used as the aqueous media.

A process is disclosed for separating tungsten from a solution containing tungstate and perrhenate ions. The process involves reacting a sufficient amount of hydrochloric acid with the solution at a sufficient temperature to form a solid containing essentially all of the tungsten and a liquor containing essentially all of the rhenium, and separating the solid from the liquor.

Omega Tungsten-Rhenium Microtemp Thermocouple, Type C W 5% W 26% .015 diam. 5'

C01B3/583 — Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids including a catalytic reaction the reaction being the selective oxidation of carbon monoxide

Tantalum carbide, TaC, like the more commonly used tungsten carbide, is a hard ceramic that is used in cutting tools. Tantalum (III) nitride is used as a thin film insulator in some microelectronic fabrication processes. [32] The best studied chalcogenide is TaS 2, a layered semiconductor, as seen for other transition metal dichalcogenides.

A solution of sodium chloride in the pH range 2 6 was also examined. Under all the tested experimental conditions, alumina is a much better adsorbent for tungsten than for rhenium. The obtained results indicated that the best separation of these two elements is achieved when 0.01 0.1 mol dm-3 HCl or 1.0 mol dm-3 HNO3 are used as the aqueous media.

Kitco: Strategic Metals - drivers of our lives in the 21st century, be it in electronics, mobility or sustainable energy. Strategic Metals include rare earth elements as well as specialty metals used in LEDs, magnets, electric motors, sensors and many other components used in smartphones, flat screens, cars, and our homes. Now they are becoming available for physical investment ...

The EIR bed showed a successful separation of rhenium and rhodium with about 122 BV of a breakthrough volume The breakthrough behavior in the column was modeled to assess the mass transfer resistances in the column The model predicted the column dynamics for rhenium quite well by assuming a homogeneous diffusion in the particle phase... Know More