Ruthenium ( Ru ) - Discovery, Occurrence, Properties and Applications of Ruthenium

Chemical Formula

Ru

Topics Covered

Background

Discovery

Occurrence

Key Properties

Applications

Background

Ruthenium is a hard silvery white metal at room temperature. It is a member of the platinum group metals.

Discovery

Ruthenium was discovered in 1844 by Karl Karlovich Klaus who isolated it from crude platinum. The name Ruthenium is derived from Ruthenia, Latin for Russia.

There are reports that the Polish chemist Jedrzej Sniadecki discovered Ruthenium in 1807, however, he withdrew claims of discovering a new element. If he had in fact discovered it, Ruthenium may well have been known as Vestium, the name that Sniadecki used in his withdrawn claim.

Occurrence

Ruthenium is very rare and is found as a metal in association other platinum group metals such as platinum, osmium and iridium. It is most commonly recovered along with nickel.

Key Properties

Ruthenium:

         Oxidises in air at approximately 800°C

         Is not attacked by hot or cold acids or aqua regia

         Oxidises explosively if added to a solution of potassium chlorate

 

Property

 

Value

Symbol

 

Ru

CAS Number

 

7440-18-8

Atomic Number

 

44

Atomic Weight

 

101.07

Melting Point

 

2334°C

Boiling Point

 

4150°C

Density

 

12.37g/cm3

Applications

Ruthenium is used for:

         An additive for platinum and palladium, where it creates a harder alloy

         A catalyst in the chemical industry

         An alloying element in titanium alloys where it imparts improved corrosion resistance.

 

Source: AZoM.com

 

Comments

  1. Alyssa Mohamed Alyssa Mohamed United States says:

    Is there anything more you can say about the history of ruthenium? I am writing a paper on it and it seems like there are very few topics in the history section. Furthermore, why doesn't ruthenium form many ions, compounds, or alloys? Is it because the element is rare?

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