Middle distillate hydrocracking catalyst with a base extrudate having a high total nanopore volume
AssigneeChevron U.S.A. Inc.
InventorsYihua Zhang, Theodorus Ludovicus Michael Maeson
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Abstract
The present invention is directed to an improved hydrocracking catalyst containing a amorphous silica-alumina (ASA) base and alumina support. The ASA base is characterized as having a high nanopore volume and low particle density. The alumina support is characterized as having a high total nanopore volume. Hydrocracking catalysts employing the combination high nanopore volume ASA base and alumina support exhibit improved hydrogen efficiency, and greater product yield and quality, as compared to hydrocracking catalysts containing conventional ASA base and alumina components.
Claims18
A hydrocracking catalyst, comprising:
- a base extrudate comprising at least one molecular sieve, an alumina and an amorphous silica alumina support, wherein the base extrudate has a total nanopore volume in the 2 to 50 nm of 0.7 to 1.2 cc/g;
- and
- at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table.
A method for making a hydrocracking catalyst, comprising the steps of:
- forming a base extrudate comprising at least one molecular sieve, an alumina and an amorphous silica alumina support, wherein the base extrudate has a total nanopore volume in the 2 to 50 nm of 0.7 to 1.2 cc/g;
- and
- impregnating the base extrude with at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table.
A process for hydrocracking a hydrocarbonaceous feedstock, comprising contacting the feedstock with a hydrocracking catalyst under hydrocracking conditions to produce a hydrocracked effluent;
- the hydrocracking catalyst comprising
- a base extrudate comprising at least one molecular sieve, an alumina and an amorphous silica alumina support, wherein the base extrudate has a total nanopore volume in the 2 to 50 nm of 0.7 to 1.2 cc/g;
- and
- at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table.
Dependencies are inferred from the claim text.