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Scandium(III) oxide or scandia is a inorganic compound with formula Sc 2 O 3.It is one of several oxides of rare earth elements with a high melting point.It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).
Scandium has been proposed for use in solid oxide fuel cells (SOFCs) as a dopant in the electrolyte material, typically zirconia (ZrO₂). [72] Scandium oxide (Sc₂O₃) is one of several possible additives to enhance the ionic conductivity of the zirconia, improving the overall thermal stability, performance and efficiency of the fuel cell. [73]
Due to the effects of the lanthanide contraction, yttrium and lutetium are very similar in properties. Yttrium and lutetium have essentially the chemistry of the heavy lanthanides, but scandium shows several differences due to its small size. This is a similar pattern to those of the early transition metal groups, where the lightest element is ...
Scandium hydride is not well understood, although it appears not to be a saline hydride of Sc(II). [5] As is observed for most elements, a diatomic scandium hydride has been observed spectroscopically at high temperatures in the gas phase. [6] Scandium borides and carbides are non-stoichiometric, as is typical for neighboring elements. [7]
Scandium is present in many ixiolite sample with percentages up to 4.0 percent Sc 2 O 3, but usually less than one percent scandium oxide. High scandium ixiolites, containing from 4 to 19% scandium oxide are typically also rich in tin and titanium.
RSV vaccine side effects in older adults . The CDC lists the following as possible side effects of the RSV vaccine: Pain, redness, and swelling where the shot is given. Fatigue. Fever. Headache ...
Cialis has several common side effects, many of which also happen with other drugs used to treat ED, like sildenafil (generic Viagra®), vardenafil , and avanafil (Stendra®).
Kangite is an exceedingly rare scandium mineral, a natural form of impure scandium oxide (Sc 2 O 3), with the formula (Sc,Ti,Al,Zr,Mg,Ca, ) 2 O 3. It crystallizes in the cubic crystal system diploidal class. [1] In terms of chemistry it scandium-analogue of tistarite. Both kangite and tistarite were discovered in the Allende meteorite. [2] [1 ...