Hydrocracking catalyst, its method of making, and method of use
AssigneesSaudi Arabian Oil Company, JGC Catalysts and Chemicals Ltd.
InventorsOmer Refa Koseoglu, Robert Peter Hodgkins, Hiroyuki Seki, Shigeyuki Nagano
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Abstract
A hydrocracking catalyst comprises an active cracking support. The active cracking support comprises a post-modified zeolite framework having zirconium atoms and titanium atoms substituting for aluminum atoms; wherein: a portion of the zirconium atom are substituted in the post-modified zeolite via 4-coordination; a portion of the zirconium atom are grafted to the post-modified zeolite via 5-coordination; and the titanium atoms are substituted in the post-modified zeolite framework via 4-coordination.
Claims20
A hydrocracking catalyst comprising an active cracking support;
- the active cracking support comprises a post-modified zeolite framework having zirconium atoms and titanium atoms substituting for aluminum atoms;
- wherein:
- the post-modified zeolite has an ultra-stable Y (USY) framework structure;
- a portion of the zirconium atom are substituted in the post-modified zeolite via 4-coordination;
- a portion of the zirconium atom are grafted to the post-modified zeolite via 5-coordination;
- and
- the titanium atoms are substituted in the post-modified zeolite framework via 4-coordination.
A method of producing a hydrocracking active cracking support comprising
- providing an acidified zeolite suspension comprising a zeolite framework;
- introducing a titanium compound to the acidified zeolite suspension to isomorphically substitute titanium via 4-coordination onto the zeolite framework, thereby producing a titanium substituted zeolite framework;
- and
- then introducing a zirconium compound to the titanium substituted zeolite framework to
- graft a portion of the zirconium atoms onto the zeolite framework via 5-coordination, and
- isomorphically substitute a portion of the zirconium atoms via 4-coordination onto the zeolite framework, thereby producing the hydrocracking active cracking support, wherein a time interval between the introduction of the titanium compound and the introduction of the zirconium compound is at least 0.5 hours.
A method of hydrocracking a hydrocarbon feed, the method comprising contacting the hydrocarbon feed with hydrogen and a hydrocracking catalyst under hydrocracking conditions;
- wherein the hydrocracking catalyst comprises an active cracking support;
- the active cracking support comprises a post-modified zeolite framework having zirconium atoms and titanium atoms substituting for aluminum atoms;
- wherein
- the post-modified zeolite has an ultra-stable Y (USY) framework structure;
- a portion of the zirconium atoms are grafted to the post-modified zeolite framework via 5-coordination;
- a portion of the zirconium atoms are 4-coordinated in the post-modified zeolite framework;
- and
- the titanium atoms are 4-coordinated in post-modified zeolite framework.
Dependencies are inferred from the claim text.