Patent ID: 7993513

Claim:
A fixed bed process for capturing arsenic and for desulphurizing a hydrocarbon fraction comprising olefins, sulphur and arsenic, said process comprising a step a) for bringing a capture mass into contact with said hydrocarbon fraction in the presence of hydrogen, said capture mass comprising: molybdenum in a sulphurized form and nickel in a sulphurized form; at least one porous support selected from any of aluminas, silica, silica-aluminas, titanium oxide and magnesium oxide; the nickel content being in the range 10% to 28% by weight expressed as the percentage of nickel oxide on the capture mass before sulphurizing, the molybdenum content being in the range 0.3% to 2.1% by weight, expressed as the percentage of molybdenum oxide on the capture mass before sulphurizing.