Converting fluorinated materials into anhydrous hydrogen fluoride

A method of generating anhydrous hydrogen fluoride comprising

• (i) thermally decomposing a fluorinated material into a gaseous effluent comprising hydrogen fluoride (HF) and carbon dioxide (CO2), and
• (ii) contacting the gaseous effluent with carbon at a temperature, TC, of at least 830° C. to convert the carbon dioxide to carbon monoxide (CO) and produce a gaseous product comprising the hydrogen fluoride and carbon monoxide, wherein, if the gaseous product further comprises carbon dioxide, a molar ratio of carbon dioxide to carbon monoxide is no greater than 0.05;
• and
• (iii) condensing the hydrogen fluoride from the gaseous product to form liquid anhydrous hydrogen fluoride.