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Platinagruppens

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by

Adrian Stigsson

on 2 October 2014

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Transcript of Platinagruppens

Platinametallerna återfinns i grupp 5 - 6 i periodiska systemet och innefattar Rutinium, Rodium, Palladium, Osmium, Iridium och Platinum. De är mycket sällsynta och används främst som katalysatrorer.
Inledning
Karl Ernst Claus
Ryssland 1844
Mest förekomande
Extremt hård
Mindre kretsar
Rutenium (Ru)
William Hyde Wollaston
England 1803
Indusri
Katalysator
Minst förekomande
Rodium (Rh)
William Hyde Wollaston
England 1803
Mest reaktiv
Legeras med ädelmataller
Lagra väte
Katalysator vid hydrering
Palladium (Pd)
Platinagruppens
metaller

Osmium (Os)
Iridium (Ir)
Platina (Pt)
Smithson Tennant
England 1804
Högst naturliga densitet
Ofta legerat med Iridium
Smithson Tennant
England & Frankrike 1804
Lite på jorden, mycket i rymden
meteoritnedslag
Platina, arkivmetern i Paris
Julius Cesar Scalinger
Italien 1557
Katalysator, salpetersyra & svavelsyra
Full transcript