Patent ID: 8197672

Claim:
A method for selective hydrodesulfurization of an olefinic naphtha feed, comprising: providing a naphtha feed containing sulfur and olefins; exposing the feed under hydrodesulfurization conditions to a catalyst comprising a porous support and a catalytic phase material on the support comprising a Group VI element, a Group VIII element and at least one element from Groups I and II of the periodic table of elements (CAS version), wherein the catalyst is present in species having reducibility characterized by at least two distinct signals, as measured by Temperature Programmed Reduction (TPR), one of which is less than or equal to about 1000K and another of which is greater than about 1000K so as to remove sulfur from the feed while substantially preserving the olefins, wherein the catalyst has a higher concentration of the catalytic phase material at a surface of the catalyst than within the catalyst.