关键词:

四氯化钛, 四氯化碳, Fe掺杂人造金红石, 低温氯化

Abstract:

The chlorination of synthetic rutile with CCl₄ for the low temperature production of TiCl₄ was studied in both packed bed and fluidized bed reactors.Synthetic rutile samples before and after chlorination were characterized with SEM, XRD and XPS.Synthetic rutile produced by the Zigong process can be rapidly chlorinated by CCl₄ at 450℃ to 500℃.The presence of Fe³⁺ ions in the lattice of the rutile phase was the key reason for the high reactivity.It was also found that an inert rutile shell was formed during the mild pre-oxidation used in the manufacturing process of the synthetic rutile material.This limited the maximum TiCl₄ yield in the chlorination process to 90%.However, this inert rutile shell structure maintained the particle size during the chlorination process, it was also beneficial because it allowed the chlorination of the synthetic rutile material in a fluidized bed reactor.This process of using CCl₄ for the chlorination of rutile is potentially valuable as an environmental protection technology.It effectively converts the undesirable ozone destructive substance (ODS) CCl₄, an industrial byproduct, into a non-ODS product.

Key words:

四氯化钛, 四氯化碳, Fe掺杂人造金红石, 低温氯化