Chlorination of titanias modified by alkali and/or phosphorus additivesI. Kinetics of the chlorination

The kinetics of the chlorination of titania modified by alkali and/or phosphorous additives, were studied by thermogravimetric methods using COCl2 and gaseous CCl4 as chlorinating agents. The chlorination of pure titania was compared with that of phosphorous-containing compounds, TiO2 · nP2O5 and K3P3O9 were also investigated. Apparent activation energies and reaction orders were calculated from the dependence of the initial rates on temperature and partial pressure.