Nils Gabriel Sefstrom – rediscoverer of vanadium element

Nils Gabriel Sefstrom – rediscoverer of vanadium element

Nils Gabriel Sefstrom – rediscoverer of vanadium element

Biography & contributions

Nils Gabriel Sefstrom was a Swedish chemist born on June 02, 1787 – died on November 30, 1845. Sefstrom’s important contributions towards chemistry are discovered vanadium periodic table chemical element in the year of 1830.

Facts about vanadium

Vanadium is having characteristics like bright white, soft, ductile metal with good structural strength. Vanadium is represented with symbol V, atomic number 74, atomic mass 50.95 g/mol, electron configuration [Ar] 3d3 4s2,density 6 g/cm3,melting point 1910 °C, boiling pint 3407 °C.

Vanadium metal is obtained via a multistep process that begins with the roasting of crushed ore with NaCl or Na2CO3 at about 850 °C to give sodium metavanadate (NaVO3).

The major uptake of vanadium by humans mainly takes place through foodstuffs, such as buckwheat, soya beans, olive oil, sunflower oil, apples and eggs.

Vanadium occurs naturally in about 65 different minerals and in fossil fuel deposits. It is mainly used to produce specialty steel alloys such as high speed tool steels. The most important industrial vanadium compound, vanadium pentoxide, is used as a catalyst for the production of sulfuric acid.

It has good resistance to corrosion and it is stable against alkalis, sulfuric and hydrochloric acids. Vanadium is also present in bauxite and in fossil fuel deposits such as crude oil, coal, and oil shale and tar sands.

Most vanadium is used as a ferrovanadium alloy, which is used an additive to improve steels. Vanadium forms stable nitrides and carbides, resulting in a significant increase in the strength of the steel. Vanadium stabilizes the beta form of titanium and increases the strength and temperature stability of titanium. Vanadium can be mixed with aluminium in titanium alloys it is used in jet engines, high-speed airframes and dental implants.

Vanadium is compatible with iron and titanium, therefore vanadium foil is used in cladding titanium to steel. Vanadium-gallium tape is used in superconducting magnets.

Vanadium is essential to ascidians and tunicates, where it is stored in the highly acidified vacuoles of certain blood cell types, designated vanadocytes.

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