Titanium tetrachloride TiCl

Al—Ti Catalyst for cis-l,4-PoIyisoprene. Of the many catalysts that polymerize isoprene, four have attained commercial importance. One is a coordination catalyst based on an aluminum alkyl and a vanadium salt which produces /n j -l,4-polyisoprene. A second is a lithium alkyl which produces 90% i7j -l,4-polyisoprene. Very high (99%) i7j -l,4-polyisoprene is produced with coordination catalysts consisting of a combination of titanium tetrachloride, TiCl, plus a trialkyl aluminum, R Al, or a combination of TiCl with an alane (aluminum hydride derivative) (86—88). 

Similarly, titanium tetrachloride (TiCl 4) rapidly reacts with moist air to produce a heavy cloud of titanium hydroxide - Ti(OH) - and HCl. 

Pyrotechnics are rarely composed of a single substance the examples are titanium tetrachloride (TiCL ), red phosphorus (RP) and white phosphorus (WP). TiCb... 

The reagent must be kept cold at all times because at room temperature the active reagent slowly decomposes and the mixture darkens considerably. Once prepared the reagent can be stored at -20°C (freezer) 1n a well-sealed flask without a significant loss of activity. A sample stored in this way for 1 year showed only a slight, 5-10%, loss of activity. The molar activity of the active reagent is equivalent to the titanium tetrachloride (TiCl ) molarity (determined by reaction with excess ketone followed by GLC analysis) however, an increase in the proportion of TiCl makes no difference to the molar activity. 

Polymerization is an important addition reaction (Section 27-17) of the alkenes. Polymers formed by this kind of reaction are called addition polymers. The formation of polyethylene is an important example. In the presence of appropriate catalysts (a mixture of aluminum trialkyls, R3AI, and titanium tetrachloride, TiCl ), ethylene polymerizes into chains containing 800 or more carbon atoms. 

Titanium tetrachloride (TiCL,) Water as diluting, Hydrochloric acid as catalyst. Isopropyl alcohol as co-solvent Without calcination, 83, 15 10 190 Brookite Nanoparticles [157]... 

Chlorine is useful for the manufacture of many chemical products even though these products themselves contain no chlorine. To create titanium metal, for example, the mineral titanium dioxide is reacted with chlorine to form titanium tetrachloride, TiCl, (sometimes humorously called "tickle ), which is then reduced by magnesium metal. Mg, as shown in the following equations ... 

Scheme 6.34. A representation of the polymerization of ethene (ethylene, CH2=CH2) by a catalyst composed of the Lewis acid mixture of titanium tetrachloride (TiCL,) and triethyl-aluminum [(CH3CH2)3A1] a Natta-Ziegler Catalyst. The actual catalytic species is (presumably) an alkyl surface-substituted octahedral titanium trichloride (TlCh) derivative with a...

TITANIUM TETRACHLORIDE. TiCL. In limited laboratory tests, titanium tetrachloride caused mild attack (- 5 mpy) of alley s 5052 and 6061 under refluxing conditions. See also Ref (7) pp. 182. 183. 

Typical inorganic compounds include titanium tetrachloride (TiCl ), dinitrogen pentoxide (N O ), phosphorus pentachloride (PCI,), and aluminum trichloride (AlCl,). 

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