Middle distillate hydrocracking catalyst containing zeolite USY with enhanced acid sites

Patent metadata

Field	Value
Publication number	US-10213772-B2
Application number	US-201514683435-A
Country	US
Kind code	B2
Filing date	Apr 10, 2015
Priority date	Apr 10, 2015
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A hydrocracking catalyst is provided comprising: a) greater than 10 wt % of a zeolite USY having: i. a total OD acidity of 0.350 to 0.650 mmol/g; ii. an ASDI between 0.05 and 0.15; iii. a BET surface area greater than 600 m 2 /g; iv. a SAR greater than 10; v. less than 45 vol % of pores greater than 2 nm; b) a support; and c) 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 using a hydrocracking catalyst to produce middle distillates is provided. A method for making a hydrocracking catalyst is also provided.

First claim

It is claimed:

1. A hydrocracking catalyst for making middle distillates comprising:
a. greater than 10 wt % of a zeolite USY having:
i. a total OD acidity of 0.350 to 0.650 mmol/g;
ii. an ASDI between 0.05 and 0.15;
iii. a BET surface area greater than 600 m 2 /g;
iv. a SAR greater than 10;
v. less than 45 vol % of pores greater than 2 nm;

b. a support; and
c. at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table;

wherein the OD acidity and the ASDI are determined by H/D exchange of acidic hydroxyl groups at equilibrium at 80° C. by FTIR spectroscopy.

2. The hydrocracking catalyst of claim 1 , wherein the hydrocracking catalyst has at least 7° F. (4° C.) more activity than a comparable hydrocracking catalyst comprising a different zeolite USY with a lower total OD acidity of at most 0.34 mmol/g.

3. The hydrocracking catalyst of claim 1 , wherein the total OD acidity is from 0.450 to 0.600 mmol/g.

4. The hydrocracking catalyst of claim 1 , wherein the zeolite USY has a unit cell size from 24.20 to 24.50 Å.

5. The hydrocracking catalyst of claim 4 , wherein the unit cell size is from 24.39 to 24.49 Å.

6. The hydrocracking catalyst of claim 1 , wherein an amount of the zeolite USY is from 11 wt % to 80 wt % in a finished hydrocracking catalyst.

7. The hydrocracking catalyst of claim 1 , wherein the zeolite USY has a SAR from 5 to 29.

8. The hydrocracking catalyst of claim 7 , wherein the SAR is from 11 to 15.

9. The hydrocracking catalyst of claim 1 , wherein the zeolite USY has less than 40 vol % of pores greater than 2 nm.

10. The hydrocracking catalyst of claim 1 , comprising at least one Group 6 metal and the at least one metal selected from Groups 8 through 10 of the Periodic Table.

11. A process for hydrocracking a hydrocarbonaceous feedstock, comprising contacting the hydrocarbonaceous feedstock with the hydrocracking catalyst of claim 1 under hydrocracking conditions to produce a hydrocracked effluent that comprises middle distillates.

12. The process of claim 11 , wherein the hydrocracking catalyst is at least 7° F. more active than a comparable hydrocracking catalyst comprising a different zeolite USY with a lower total OD acidity of at most 0.34 mmol/g.

13. The process of claim 11 , wherein the total OD acidity is from 0.450 to 0.600 mmol/g.

14. The process of claim 11 , wherein the zeolite USY has a unit cell size from 24.20 to 24.50 Å.

15. The process of claim 11 , wherein an amount of the zeolite USY is from 11 wt % to 80 wt % in a finished hydrocracking catalyst used for the contacting.

16. The process of claim 11 , wherein the zeolite USY has a SAR from 5 to 29.

17. The process of claim 11 , wherein the hydrocracking catalyst comprises at least one Group 6 metal and at the at least one metal selected from Groups 8 through 10 of the Periodic Table.

18. The process of claim 11 , wherein the hydrocarbonaceous feedstock has a TBP range within 700 to 1200° F. (371 to 649° C.).

19. The process of claim 11 , wherein the hydrocracked effluent comprises from 20 vol % to 50 vol % of a middle distillate having a TBP of 250-550° F. (121-288° C.).

Assignees

• Zhang Yihua
• Maesen Theodorus Ludovicus Michael
• Rainis Andrew
• Le Bao Quoc
• Chevron Usa Inc

Inventors

• Zhang Yihua
• Maesen Theodorus Ludovicus Michael
• Rainis Andrew
• Le Bao Quoc

Classifications

• B01J35/002

  Operations & Transport · mapped topic

• B01J37/0207

  Pretreatment of the support · CPC title

• B01J35/023

  Operations & Transport · mapped topic

• C10G47/20

  the catalyst containing other metals or compounds thereof · CPC title

• B01J35/1023

  Operations & Transport · mapped topic