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Phase diagram for the iridium-rhenium system: experimental (); proposed by Kaufman (); calculated using the ideal solution model for all phases; calculated using thermodynamic data for solid solutions 0 L hcp Ir,Re = −652.2 + 0.83T and 0 L fcc Ir,Re = −1070.3 + 1.03T (); and calculated using also a liquid mixing parameter of 0 L liq Ir,Re = 8000.. Squares and hexagons correspond to fcc and ...
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· The hydrogen evolution reaction (HER) has been comprehensively investigated on several metals. However, there are few studies that have examined the electrocatalytic activity of rhenium electrodes towards the HER [1–5].Mendez et al. [] reviewed the electrocatalytic activity of rhenized surfaces and noted that the kinetics of the HER on these surfaces is not fully understood.
Abstract The possibility of extracting molybdenum from weak acid (pH 2 to 3) rhenium-containing solutions with the non-specific extractant Aliquat 336 is studied. A mechanism for the temperature influence on extraction and in particular for the extraction of molybdenum and rhenium is proposed. It is shown that the selectivity coefficient ( β = D Mo / D Re ) depends on the concentrations of ...
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rhenium extraction aqueous phase aqueous solutions Prior art date 1967-02-07 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the
Recovery of rhenium from molybdate solutions in substantially theoretical yields can be achieved by sampling the extractant solution after stripping rhenium and adding sufficient active extractant to attain substantially the same rhenium extraction and separation ...
Application of Polyelectrolyte‐Enhanced Ultrafiltration for Rhenium Recovery from Aqueous Solutions J. Zeng Corresponding Author E-mail address: [email protected] College of Chemistry and Chemical Engineering, Hunan University of Science and ...
· Rhenium plating. by Terence Jones, M.I.M.F Gloucester, England, U.K.; E-mail, [email protected] henium offers more than a trivial confusion of its chemical symbol with rhodium (rhodium is flRh, whereas rhenium is Re). As some of the more interesting uses of rhenium are in electroless alloy deposits, the title reflects the more general aspect ...
· A semi-automated system has been designed and installed for the routine production of highly concentrated solutions of rhenium-188 perrhenate in saline which incorporates extensive radiation protection for the laboratory staff. This new system represents a simple ...
Heat Treating Solutions Traditional base metal thermocouple technology can be used to measure temperatures to approximately 1200˚C For higher temperature requirements the noble metal designs are reliable to 1800˚C For ultra-high temperature requirements, BASF offers the Tungsten-Rhenium …
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Request PDF | Production of concentrated rhenium acid by electrodialysis of rhenium salts solutions | Effects of current density, temperature, rhenium concentration in initial solution, flow rate ...
The indicator composition for the determination of rhenium (VII) in aqueous solutions contains a sorbent-anionite AV-17-10P, brilliant green, phosphoric acid and water in the following content, wt.%: anionite AV-17-10P 0,40, brilliant green 0,004, phosphoric acid 1
· Sorption of rhenium and uranium by strong base anion exchange resin from solutions with different anion compositions Hydrometallurgy, 131-132 ( 2013 ), pp. 127 - 132, 10.1016/j.hydromet.2012.11.003
metals (pgms) and rhenium have high hardness and high thermal stability, and are useful to industry in constructional, high-temperature and high-hardness materials and as components of superalloys (1). Iridium-rhenium solid solutions are used as the
In this paper, a phase diagram for the Re-Rh system which serves as a reliable model for the representation of the available experimental data is proposed. Synthesis of [M (NH3)5Cl] (ReO4)2 (M ...
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Introduction Rhenium is one of the rarest metals available in the Earth''s crust. It is a low volume metal, which does not have any substitute for various applications where it is used. Note: Although care has been taken to maintain the highest levels of accuracy in TMR''s reports, recent market/vendor-specific changes may take time to reflect in the analysis.
Rhenium Solutions Reliable Iridium-rhenium solid solutions are used as the working elements of high-temperature thermocouples 2 and in high-temperature and chemically resistant materials for crucibles 3 while IrReAl . a reliable model for further investigations of the phase behaviour in the system described.
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· The rhenium solutions were prepared by dilution of an NH 4 ReO 4 stock solution (Aldrich, 99+ %) with bi-distilled water. After separation of the solid and liquid phases by centrifugation, the pH was measured and the rhenium concentration in the liquid phase was photometrically determined using the hydrochloric hydroxylamine method at 300 nm [ 38 ].
The indicator composition for the determination of rhenium (VII) in aqueous solutions contain potassium thiocyanate, hydrochloric acid, tin chloride (II) and water further comprises a sorbent - anionite AV-17-10P in the following ratio, wt.%: anionite AV-17-10P 0
· Rhenium Nitrosyl Complexes for Hydrogenations and Hydrosilylations. Organometallics 2008, 27 (14), 3474-3481. DOI: 10.1021/om7011024 ...
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Rhenium in medical technology. Unique material properties make rhenium powder an essential raw material for various medical devices such as MRT systems. Rhenium in the aerospace industry. Rhenium powder is also a reliable part of rocket and satellite components.
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For large, clinical-scale generators (500–1000 mCi tungsten-188), it is convenient to have specific volume solutions greater than 20 mCi/mL. 1.2. Re-188 Production Rhenium-188 is produced according to the decay scheme in Figure 1 and its main physical1.
The U.S. Department of Energy''s Office of Scientific and Technical Information OSTI.GOV Journal Article: Determining rhenium in weak processing solutions
rhenium solutions reliable We sincerely welcome you to contact us through hotlines and other instant communication ways. Rhenium188 Production in Hospitals, by W188/Re188 ...