| abstract |
A method for producing a sulphided copper sorbent is described, comprising the steps of: (i)contacting a sorbent precursor material containing one or more sulphidable copper compounds, with a sulphiding gas stream comprising hydrogen sulphide to form a sulphided sulphur-containing sorbent material, and (ii) subjecting the sulphided sulphur-containing sorbent material to a heating stepin which it is heated to a temperature above that used in the sulphiding step and ≥110 ºC,under an inert gas selected from nitrogen, argon, helium, carbon dioxide, methane, and mixtures thereof, said inert gas optionally comprising hydrogen sulphide. The method provides sulphided copper sorbents that have reduced levels of elemental sulphur. |