• Hydrochemical Evaluation of Molybdenum Content of the

    The groundwater quality of Wadi Al Arab aquifer, northwest Jordan, was assessed for its high molybdenum concentrations, which reach 1.62 mg/L. This value of Mo-concentration was far beyond the Jordan Institution for Standards and Metrology (JISM) and World Health Organization (WHO) guidelines. Hydro-geochemical studies were carried out in order to assess the chemistry of the groundwater

  • Author: Tasneem H Hiasat, Omar A. Rimawi, Issa M. Makhlouf
  • Plating on Molybdenum Molybdenum Electroplating Methods

    Non-aqueous media: A primary method of depositing a coating of molybdenum using non-aqueous media is fused salt electrolysis, which involves a combination of a chemical reaction and an electron transfer using a reactor known as an electrochemical cell. An electric current passes from the anode through the electrolyte (the cell bath that must be

  • Analytical of Molybdenum and Tungsten 1st Edition

    Purchase Analytical of Molybdenum and Tungsten 1st Edition. Print Book & E-Book. ISBN 9780080166735, 9781483280615

  • Electrolytic recovery of molybdenum from molybdic oxide

    Sep 01, 1975· An electrolytic process for molybdenum extraction in a KCl−K3MoCl4 electrolyte (containing approximately 7.5 wt pct molybdenum) was investigated using three types of anode feed —namely, molybdic oxide-graphite, molybdenum sesquisulfide-graphite, and molybdenum sesquisulfide without graphite. In the case of molybdic oxide-graphite anode, a maximum current

  • Cited by: 4
  • Molybdenum Nanowires by Electrodeposition Science

    Dec 15, 2000· Metallic molybdenum (Moo) wires with diameters ranging from 15 nanometers to 1.0 micrometers and lengths of up to 500 micrometers (0.5 millimeters) were prepared in a two-step procedure. Molybdenum oxide wires were electrodeposited selectively at step edges and then reduced in hydrogen gas at 500°C to yield Moo. The hemicylindrical wires prepared by this technique were self

  • Cited by: 778
  • Molybdenum Plating Molybdenum Electroless Plating

    Molybdenum is among a sub group of elements that are known as refractory metals. These types of metals provide numerous metal finishing benefits. Molybdenum is relatively rare and possesses its own unique challenges when combined with other processes. Contact ENS today regarding our molybdenum coating capabilities.

  • Molybdenum electrodes for hydrogen production by water

    Nov 01, 2008· The hydrogen production by water electrolysis was tested with different electrocatalysts (molybdenum, nickel, iron alloys containing chromium, manganese and nickel) using aqueous solutions of ionic liquid (IL) like 1-butyl-3-methylimidazolium tetrafluoroborate (BMI.BF 4). The hydrogen evolution reaction (HER) was performed at room temperature in a potential of −1.7 V (PtQRE).

  • Molybdenum analysis IMOA: International Molybdenum

    Molybdenum blue reaction for the determination of orthophosphate . The molybdenum blue reaction, used predominantly for the determination of orthophosphate­ in environmental waters, has been pually modified and re-optimised over the years, but this important reaction in analytical chemistry is usually treated as something of a 'black box' in the analytical literature.

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  • RM26 Electromechanical Corrosion of molybdenum electrodes

    A great influence on the corrosion of molybdenum electrodes has the chemical composition of the melt. Since molybdenum is not a noble metal, it easily oxidizes in the presence of almost all polyvalent elements and complexes in the melt, e.g. Sb, Zn, As, Ni, Mn, Co, or Pb, which have a higher standard potential than molybdenum [7, 9-11].

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  • Applications of Molybdenum Metal and Its Alloys

    used to manufacture molybdenum-alloy steel. During melting, the gangue ends up in the slag. However, tech oxide must be purified chemically to use it in the manufacture of molybdenum metal. Figure 1 is a flow chart of molybdenum metal manufacturing, starting with tech oxide. The oxide is first dissolved in ammonium or sodium hydroxide, and this

  • Robust Hydrogen-Evolving Electrocatalyst from

    Molybdenum disulfide-based layered materials are promising electrocatalysts for hydrogen production from water electrolysis if their catalytic performance can be further improved by increasing the electrical conductivity and edge site density, and decreasing the contact resistance between the catalyst and its support. A suitable conductive scaffold can play a positive role in enhancing the

  • Electrodeposition of thick metallic amorphous molybdenum

    Jan 15, 2015· The electrodeposition of thick metallic molybdenum coating from aqueous electrolyte considered difficult for a long time owing to high reactivity with oxygen. In the present study, a successful attempt was made to electrodeposit thick (~ 25 μm), metallic bright Mo coating by DC electrolysis from a water deficient aqueous electrolyte containing

  • Energy and exergy analyses of electrolytic hydrogen

    May 01, 2012· Highlights Electrolytic hydrogen production is examined with molybdenum-oxo catalysts in the cathode. A model of the electrolysis process is developed to predict the energy and exergy efficiencies. The system consists of two half-cells of PEM (proton exchange membrane) and alkaline electrolysis. The effects of temperature and membrane thickness are reported at varying current

  • Molybdenum Phosphide Flakes Catalyze Hydrogen

    Molybdenum Phosphide, Hydrogen Evolution Reaction, Catalyst, Electrolysis 1. Introduction As a clean and renewable resource, hydrogen is believed to be one of the most promising alternative energy car-riers [1] [2]. Hydrogen can be generated by electrolysis or photoelectrolysis of water the viahydrogen evolution reaction (HER).

  • ELECTROWINNING MOLYBDENUM AND TUNGSTEN (Journal

    Fe/sup 59/ was added to cerium during casting and used to follow the migration of iron during solid state electrolysis. Radiotracers were used in developing special analytical techniques applicable to high-purity rare-earth metals produced by molten salt electrolysis. (auth)

  • THE ELECTROCHEMICAL PROPERTIES OF APPLICATION OF

    OF MOLYBDENUM AND TUNGSTEN E.F.Sperenskaya, V.E.Mertsalova, and I.I.Kulev CONTENTS 1. Potentials of redox systems 2. Composition and spectrophotometry of complex com-pound^ 3. Electrolysis of solutions 4. Reduction with metals and amalgams 5. Polarography 892 894 895 897 898 Molybdenum and tungsten find widespread application in

  • Molybdenum Phosphide Flakes Catalyze Hydrogen Generation

    Molybdenum phosphide (MoP) flakes were synthesized by the reduction of hexaammonium heptamolybdate tetrahydrate and ammonium dihydrogen phosphate. The flakes are porous and constructed by MoP nanoparticles with ca. 100 nm diameters. The lateral size of flakes ranges from less than 1 μm to larger than 5 μm, and the thickness of MoP fakes is ca. 200 nm.

  • 14177-55-0 Nickel molybdenum oxide, 98% Nickel

    Effect of phosphorus on the surface concentration of molybdenum and nickel in the oxide form of nickel molybdenum/alumina catalysts and on their hydrodesulphurization activity.