Discovered by Ida Tacke-Noddack of Germany in 1925, rhenium has the third highest melting of all elements- tungsten and carbon being higher on the list. It is also the fourth most dense element, with only platinum, iridium and osmium being more dense. When re-alloyed with molybdenum (it is produced by being separated from molybdenum), is is a very conductive material.It is commonly used in:
- Catalysts in the production of high octane gasoline
- Catalysts used in hydrogenation reactions
- Jet engine parts
- Filaments in spectrographs and ion gauges
- Electrical contact material
- Thermocouples
- Photography
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