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US 2006/0213814 A1Published application
Hydroprocessing of naphtha streams at moderate conditions
AssigneeIntevep, S.A.
InventorsYilda Romero, Jorge Tejada, Jose Castro, Rosa Caldera
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Abstract
The invention is drawn to a catalyst having a substantially bimodal support phase and an active metal phase that is suitable and stable for desulfurization of high-olefin content naphtha streams with minimal octane-loss running at low hydrogen pressure. The active metal phase preferably includes cobalt, molybdenum and at least one additional metal selected from the alkali-metals group.
Claims15
A catalyst for hydrodesulfurization of olefinic naphtha, comprising:
- a porous support;
- and
- a catalytic phase 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 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.
1 more element
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 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 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.
Dependencies are inferred from the claim text.