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Introduction of titanium tetrachloride and its synthesis method

Nov. 01, 2019
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Titanium tetrachloride, also known as titanium (IV) chloride, is an inorganic compound, an important titanium halide, mainly used in the production of titanium sponge and an important raw material for the production of titanium chloride.


Titanium tetrachloride is an important intermediate for the production of titanium metal and its compounds. At room temperature, titanium tetrachloride is a colorless liquid and emits smoke in the air to form a mixture of titanium dioxide solids and hydrochloric acid droplets.


Titanium tetrachloride is a colorless liquid, and the sample is often yellow or reddish brown when it is impure. Similar to vanadium tetrachloride, it is one of the few transition metal chlorides that are liquid at room temperature, and its low melting point is related to weak intermolecular forces. Most of the metal chlorides are polymers containing chlorine-bridged metal atoms, while the intermolecular forces of titanium tetrachloride are mainly weak van der Waals forces, so the melting point is not high.


The TiCl4 molecule is a tetrahedral structure, and each Ti4+ is connected to four ligands Cl−. Ti has the same number of electrons as the rare gas argon and is a closed shell structure. Therefore, the titanium tetrachloride molecule has a regular tetrahedral structure and has a high degree of symmetry.


TiCl4 is soluble in non-polar toluene and chlorinated hydrocarbons. Studies have shown that dissolution in certain aromatic hydrocarbons involves the formation of a complex similar to [(C6R6)TiCl3]+. Titanium tetrachloride can be exothermicly reacted with a Lewis base solvent such as THF to form a hexacoordinate adduct. For larger ligands, the product is a pentacoordinated TiCl4L.


In addition to the release of corrosive hydrogen chloride, titanium oxide and oxychloride are formed when TiCl4 is stored, and the used plug and syringe are stuck.


As an important inorganic compound, titanium tetrachloride has about four production methods. The method is as follows:


1. Chlorination method: the high-titanium slag and petroleum coke are compounded in a certain ratio, pulverized, and reacted with chlorine gas to form titanium tetrachloride gas. After condensation, liquefied titanium tetrachloride liquid is obtained, filtered, and distilled. Finished titanium tetrachloride.

TiO2+2C+2Cl2→TiCl4+2CO↑

TiO2+C+2Cl2→TiCl4+CO2↑

2. Titanium dioxide, carbon powder and starch are used as raw materials, and after mixing them, chlorination reaction is carried out by introducing chlorine gas at 600 ° C, and the crude product is obtained by refining.

3. Titanium chloride is prepared from titanium slag or rutile titanium dioxide and ilmenite.

4. Commercially available 30 g of titanium dioxide, 15 g of charcoal, 0.05 g of manganese dioxide (catalyst) and 0.3 g of soluble starch are mixed uniformly with water, heated in an oven, and continuously stirred to form a solid granular substance, which is placed in a crucible for burning. . Then, the chlorination reaction of titanium dioxide is carried out according to the following steps: the pellet of the burned material is placed in a flask, chlorine gas is introduced under heating, and the chlorination reaction is carried out at about 450 ° C to form titanium tetrachloride. Titanium tetrachloride is introduced into the receiving bottle through the condenser.


The above is an introduction to the introduction of titanium tetrachloride and its synthesis method by the Haihang industry. If you are interested in titanium tetrachloride, please contact us to communicate.

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