A process for the decomposition and removal of one or more fluorine containing
compounds from a first gaseous mixture comprising the one or more fluorine containing
compounds and water vapour, which process comprises the stages of: (i) contacting
the first gaseous mixture with a catalyst comprising an aluminium based material
to produce a second gaseous mixture comprising hydrogen fluoride and carbon oxides;
and (ii) removing the hydrogen fluoride from the second gaseous mixture to produce
a third gaseous mixture, which is substantially free of hydrogen fluoride.
