I need a container of titanium tetrachloride (TiCl4) which works in the range of 700-1000°C. which kind of material can resist this condition and doesnt get corroded?
Under such conditions, only a gas-tight ceramic made of Al2O3 or YSZ will work. You need a tube furnace with dense Al2O3 tube (tube reactor).
Dear vadim,
what do you think about graphite, diamond, silicon carbide or fused quartz? arent they a proper choice?
Technically and commercially realistic is only Al2O3 pipe. Up to 900°C it works with the tube of quartz glass, but 1000°C is for quartz glass permanently too much (problems with the crystallization). Everything else would be theoretically possible, but either too expensive or technically too complicated. Graphite is not gas-tight and oxidizes on the air side, gas-tight silicon carbide is too expensive and so on ...
Dear Vadim,
how does this chloride cause corrosion? what is the probable mechanism?
In the presence of oxygen or water ( trace amounts of O2 and H2O in TiCl4 are sufficient) the following reactions occur:
TiCl4 + O2 = TiO2 + 2Cl2
TiCl4 + 2H2O = TiO2 + 4HCl
Chlorine and hydrogen chloride attack virtually all metallic materials.
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