Patent ID: 8637723

Claim:
A process for the removal of carbon monoxide from substance streams comprising carbon monoxide and at least one olefin by adsorption on a copper, zinc and zirconium oxide-comprising adsorption composition comprising activation steps, adsorption steps and regeneration steps, wherein for the activation (i) in a first activation step an activation gas mixture comprising the olefin and an inert gas is passed through the adsorption composition, and (ii) in a second activation step the adsorption composition is heated to a temperature in the range from 180 to 300° C. and an inert gas is passed through it, wherein the steps (i) and (ii) can each be performed several times, in the adsorption steps the adsorption composition is contacted with the carbon monoxide-comprising substance stream, and in the regeneration steps the adsorption composition is heated to a temperature in the range from 180 to 300° C. and a regeneration gas is passed through it, wherein the regeneration gas comprises 1000 to 3000 ppm of oxygen in an inert carrier gas and the copper-comprising fraction of the adsorption composition after a regeneration step has a reduction level of at least 65% and at most 75%.