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Carl Auer von Welsbach used a mixture of lanthanum oxide and zirconium oxide, which he called Actinophor and patented in 1886. The original mantles gave a green-tinted light and were not very successful, and his first company, which established a factory in Atzgersdorf in 1887, failed in 1889. [53] Modern uses of lanthanum include: LaB 6 hot ...
Lanthanum(III) oxide, also known as lanthana, chemical formula La 2 O 3, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is used in some ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts, among other uses.
A table listing the 17 rare-earth elements, their atomic number and symbol, the etymology of their names, and their main uses (see also Applications of lanthanides) is provided here. Some of the rare-earth elements are named after the scientists who discovered them, or elucidated their elemental properties, and some after the geographical ...
Image credits: Sasha Weilbaker #7 Solar Panels. While both solar panels and plant leaves harvest energy from the sun, a team at Princeton University took biomimicry in solar panels a step further ...
152 Eu (half-life 13.516 years) and 154 Eu (half-life 8.593 years) cannot be beta decay products because 152 Sm and 154 Sm are non-radioactive, but 154 Eu is the only long-lived "shielded" nuclide, other than 134 Cs, to have a fission yield of more than 2.5 parts per million fissions. [21]
Lanthanum carbonate is used in medicine as a phosphate binder. [1] As a medication it is sold under the trade name Fosrenol by the pharmaceutical company Shire Pharmaceuticals . Due to its large size (1000 mg tablet is 2.2 cm in diameter), it may be possible to choke on the tablet if it is not chewed.
Lanthanum chloride is also used in biochemical research to block the activity of divalent cation channels, mainly calcium channels. Doped with cerium, it is used as a scintillator material. [6] In organic synthesis, lanthanum trichloride functions as a mild Lewis acid for converting aldehydes to acetals. [7]
Praseodymium(III) nitride is used in high-end electric and semiconductor products, and as a raw material to produce phosphor. Also it is used as a magnetic material and sputtering target material. [26] Many praseodymium compounds, such as praseodymium(III) oxalate, are used to colour some glasses and enamels. If mixed with certain other ...