Sökning: "Vanadium"

Visar resultat 1 - 5 av 102 avhandlingar innehållade ordet Vanadium.

1. 1. High Valent Metal Oxo Complexes as Oxidation Catalysts

   Författare :Kamal Hossain; Kemisk fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molybdenum; tungsten; Vanadium; oxygen atom transfer; epoxidation; sulfoxidation; molybdenum; tungsten; vanadium; oxygen atom transfer; epoxidation; sulfoxidation;

   Sammanfattning : A series of new dioxomolybdenum(VI) and -tungsten(VI) complexes of tripodal tetradentate and tridentate amino bis- and monophenolate ligands have been synthesized and characterized. The majority of the complexes are mononuclear, but dimeric and trimeric oxo-bridged M(VI) (M = Mo, W) were also obtained. LÄS MER

3. 2. Dissolved and suspended transport of tungsten, molybdenum, and vanadium in natural waters

   Författare :Susanne Bauer; Johan Ingri; Carl-Magnus Mörth; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tungsten; molybdenum; vanadium; Baltic Sea; redox cycling; suspended particles; boreal rivers; Applied Geology; Tillämpad geologi;

   Sammanfattning : Some transition metals and metalloids occur primarily as oxyanions in natural waters including antimony, arsenic, chromium, molybdenum, tungsten and vanadium. These oxyanions can pass through cell walls along the same pathways as phosphate or sulfate. Some of these oxyanions are essential for life, but in high concentrations they become all toxic. LÄS MER

4. 3. Experimental investigation of molecular solids and vanadium at high pressure and temperature

   Författare :Zsolt Jenei; Reinhold Schuch; William Evans; Stefan Klotz; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular solid; high pressure; vanadium; phase transition; Physics; Fysik; Physics Of Matter; materiefysik;

   Sammanfattning : Understanding high pressure effects on simple molecular system is of great interest for condensed matter science and geophysics. Accessing the static pressure and temperature regions found in planetary interiors is made possible by the development of the Diamond Anvil Cell technique. LÄS MER

5. 4. A Study on Vanadium Extraction from Fe-V-P Melts Derived from Primary and Secondary Sources

   Författare :Mikael Lindvall; Du Sichen; Christiaan Pistorius; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vanadium; V; V2O5; V2O3; ferrovanadium; vanadiferous; titaniferous; titanomagnetites; magnetite; spinel; slag; experimental; free; spinel; converter; LD; BOF; solubility; equilibrium; selective; oxidation; hibonite; karelianite; Al2O3; CaO; SiO2; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V slags were carried out to provide important understanding of the extraction processes. LÄS MER

7. 5. Aqueous Exfoliation of Transition Metal Oxides for Energy Storage and Photocatalysis Applications : Vanadium Oxide and Molybdenum Oxide Nanosheets

   Författare :Ahmed S. Etman; Junliang Sun; Yury Gogotsi; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aqueous exfoliation; vanadium oxide nanosheets; molybdenum oxide nanosheets; energy storage; photocatalysis; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Two-dimensional (2D) transition metal oxides (TMOs) are a category of materials which have unique physical and chemical properties compared to their bulk counterparts. However, the synthesis of 2D TMOs commonly includes the use of environmental threats such as organic solvents. LÄS MER