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Niterra established its first European subsidiary, NGK SPARK PLUG (U.K.) Ltd. in 1975. In 1979, its second European subsidiary, NGK SPARK PLUG DEUTSCHLAND GmbH, was founded in Germany. [6] Ten years later, it was renamed NGK SPARK PLUG EUROPE GmbH when it took charge of operations in Europe. In 2017, its remit further expanded across the EMEA ...
Iridium is mainly used as a hardening agent for platinum alloys. Iridium is the most corrosion-resistant metal known as it is not attacked by acids, including aqua regia. In the presence of oxygen, it reacts with cyanide salts. Traditional oxidants also react, including the halogens and oxygen at higher temperatures.
Iridium tetroxide (IrO 4, Iridium(VIII) oxide) is a binary compound of oxygen and iridium in oxidation state +8. [1] This compound was formed by photochemical rearrangement of [( η 1 -O 2 )IrO 2 ] in solid argon at a temperature of 6 K (−267.15 °C; −448.87 °F).
Iridium compounds are used as catalysts in the Cativa process for carbonylation of methanol to produce acetic acid. [92] [93] Iridium complexes are often active for asymmetric hydrogenation both by traditional hydrogenation. [94] and transfer hydrogenation. [95] This property is the basis of the industrial route to the chiral herbicide (S ...
Iridium(IV) oxide, IrO 2, is the only well-characterised oxide of iridium. It is a blue-black solid. The compound adopts the TiO 2 rutile structure, featuring six ...
Iridium(II) chloride is an inorganic chemical compound of iridium metal and chlorine with the chemical formula IrCl 2. [1] [2] This is a metal salt of iridium and ...
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