FeTiO

Titanium, Ti, atomic number 22, relative atomic mass 47.90, is the ninth most common element (ca 0.6% by weight) and is widely distributed in the earth s cmst. It is found particularly in the ores mtile, Ti02, and ilmenite, FeTiO. ... 

Iron Titanates. Ferrous metatitanate [12168-52-4] FeTiO, mp ca 1470°C, density 472(0), an opaque black soHd having a metallic luster, occurs in nature as the mineral ilmenite. This ore is used extensively as a feedstock for the manufacture of titanium dioxide pigments. Artificial ilmenite may be made by heating a mixture of ferrous oxide and titanium oxide for several hours at 1200°C or by reducing a titanium dioxide/ferric oxide mixture at 450°C. 

Titanium, Ti, a light, strong metal, is used where these properties are critical— in widely diverse applications such as jet engines and dental fixtures such as partial plates. Although titanium is relatively reactive, unlike scandium it is resistant to corrosion because it is passivated by a protective skin of oxide on its surface. The principal sources of the metal are the ores ilmenite, FeTiO , and rutile, Ti02. 

Ruby S.L. Shirane, G. (1961) Magnetic anomaly in the FeTiOs-a- Fe203 system by Moss-bauer effect. Phys. Rev. 123 1239-1240... 

Titanium occurs in nature in the minerals rutile( Ti02), ilmenite (FeTiOs), geikielite, (MgTiOs) perovskite (CaTiOs) and titanite or sphene (CaTiSi04(0,0H,F)). It also is found in many iron ores. Abundance of titanium in the earth s crust is 0.565%. Titanium has been detected in moon rocks and meteorites. Titanium oxide has been detected in the spectra of M-type stars and interstellar space. 

Titanium is mined as rutile (Ti02) and ilmenite (FeTiOs). The refined oxide is an important constituent of paints, while the relatively light but highly corrosion-resistant metal is increasingly used structurally and for chemical process equipment despite its high cost. 

Ilmenite structure the stmcture of the mineral FeTiOs Metathetical reaction a common type of reaction, also known as a donble decomposition reaction, in which the anions and cations of the reactants are interchanged in the prodncts (e.g. AX - - BY AY - - BX)... 

Titanium was discovered in 1791 by an English clergyman and amateur chemist, William Gregor. He identified it in a black sand (now known to be ilmenite, FeTiOs, named after Russia s Ilmen lake and mountains) from the Menacchan Valley in Cornwall Four years later, the German chemist M. H. Klaproth independently discovered the element in the Ti02... 

SCF-A a method (a) geometry of the (FeTiO,o) cluster (b) molecular-orbital energy-level diagram for the cluster a and p spin are spin-up and spin-down electron orbitals energy levels indicated by dashed lines are unoccupied (c) calculated wave-function contours for the 16 orbitals of the cluster the I6a, orbital corresponds to the d Fe(f,. ) orbital and is clearly Fe-Ti bonding in character (after Sherman, 1987b reproduced with the publisher s permission). 

Brown, N.E., Navrotsky, A., Nord, G.L., Baneijee, S.K. (1993) Hematite (Fe203)-ilmenite (FeTiOs) solid solutions Determinations of FeTi order from magnetic properties. Am Mineral 78 941-951 Burton, B.P. (1987) Theoretical analysis of cation ordering in binary rhombohedral carbonate systems. Am Mineral 72 329-336... 

Linton JA, Fei Y, Navrotsky A (1999) The MgTiOs-FeTiOs join at high pressure and temperature. Am Mineral 84 1595-1603... 

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