abstract |
Removal of aromatic sulfur compounds from an FCC feedstock with minimal adsorption of aromatic hydrocarbons is achieved using a zeolite Y exchanged with alkali or alkaline earth cations. KY is an especially effective adsorbent. Where the KY is impregnated with a group VIII metal, particular palladium or platinum, the adsorbent is effectively regenerated by treatment with hydrogen at elevated temperatures. |