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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.
Lanthanum(III) sulfate is an inorganic compound with the formula La 2 (SO 4) 3 ·xH 2 O (0 ≥ x ≥ 9). It forms various hydrates, the most common one being the nonahydrate, which are all white solids.
Lanthanum oxysulfide is an inorganic compound, a salt of lanthanum and hydrogen sulfide acid, with the formula La 2 O 2 S. [2] [3] Synthesis. Calcination of lanthanum ...
Lanthanum carbonate is used as a starting material in lanthanum chemistry, particularly in forming mixed oxides, for example for production of lanthanum strontium manganite, primarily for solid oxide fuel cell applications; for production of certain high-temperature superconductors, such as La 2-x Sr x CuO 2.
Lanthanum(III) sulfide can be prepared from the effect of sulfur vapor on metallic lanthanum: 2 La + 3 S → La 2 S 3. It can also be prepared from the effect of hydrogen sulfide on lanthanum: 2 La + 3H 2 S → La 2 S 3 + 3 H 2. The effect of hydrogen sulfide on lanthanum oxide in the presence of reducing agents also produces lanthanum(III ...
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A lanthanum hexaboride hot cathode. Lanthanum hexaboride cathodes. Lanthanum hexaboride powdered. Lanthanum hexaboride (La B 6, also called lanthanum boride and LaB) is an inorganic chemical, a boride of lanthanum. It is a refractory ceramic material that has a melting point of 2210 °C, and is insoluble in water and hydrochloric acid. [1]
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