Noble metal zeolite catalyst for second-stage hydrocracking

Patent metadata

Field	Value
Publication number	US-10183282-B2
Application number	US-201514602394-A
Country	US
Kind code	B2
Filing date	Jan 22, 2015
Priority date	Jan 22, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A second-stage hydrocracking catalyst is provided comprising:
a. from 40 wt % to 70 wt % of a zeolite USY having an ASDI from 0.05 to 0.18; b. an amorphous silica alumina; c. a second alumina; and d. 0.1 to 10 wt % noble metal; wherein the second-stage hydrocracking catalyst has a BET surface area from 450 to 650 m 2 /g. A second-stage hydrocracking process is provided comprising using the second-stage hydrocracking catalyst to produce middle distillate. A method for making the second-stage hydrocracking catalyst is also provided.

First claim

It is claimed:

1. A second-stage hydrocracking catalyst, comprising:
a. from 40 wt % to 70 wt % of a zeolite USY having an ASDI from 0.05 to 0.18;
b. an amorphous silica alumina;
c. an alumina; and
d. 0.1 to 10 wt % noble metal;

wherein the second-stage hydrocracking catalyst has a BET surface area from 450 to 650 m 2 /g.

2. The second-stage hydrocracking catalyst of claim 1 , wherein the zeolite USY has a total OD acidity of 0.200 to 0.500 mmol/g.

3. The second-stage hydrocracking catalyst of claim 1 , wherein the zeolite USY has a zeolite SAR from 25 to 50.

4. The second-stage hydrocracking catalyst of claim 1 , wherein the zeolite USY has a zeolite BET surface area from 750 to 780 mg 2 /g.

5. The second-stage hydrocracking catalyst of claim 1 , wherein the zeolite USY has a unit cell size of 24.22 to 24.32 Å.

6. The second-stage hydrocracking catalyst of claim 1 , wherein the amorphous silica alumina has an alumina BET surface area from 350 to 500 mg 2 /g.

7. The second-stage hydrocracking catalyst of claim 1 , wherein the alumina has an alumina BET surface area from 220 to 280 mg 2 /g.

8. The second-stage hydrocracking catalyst of claim 1 , wherein the alumina has an alumina compacted bulk density of 800 to 1100 g/l.

9. The second-stage hydrocracking catalyst of claim 1 , wherein the second-stage hydrocracking catalyst has a compacted bulk density of 400 to 680 g/l.

10. The second-stage hydrocracking catalyst of claim 1 , wherein the second-stage hydrocracking catalyst has a LOI (1000° F. [538° C.]) less than 10 wt %.

11. The second-stage hydrocracking catalyst of claim 1 , wherein the second-stage hydrocracking catalyst has a SAR from 1.0 to 3.0.

12. The second-stage hydrocracking catalyst of claim 1 , wherein the second-stage hydrocracking catalyst has a Pd H2 adsorption greater than 50 wt %.

13. The second-stage hydrocracking catalyst of claim 1 , wherein the second-stage hydrocracking catalyst has a particle density less than 980 g/l.

14. A method for making the second-stage hydrocracking catalyst of claim 1 , the method comprising:
a. mixing together from 40 wt % to 70 wt % of a zeolite USY having an ASDI from 0.05 to 0.18, an amorphous silica alumina, an alumina, and enough liquid to form an extrudable paste;
b. extruding the extrudable paste to form an extrudate base;
c. impregnating the extrudate base with a metal impregnation solution containing at least one noble metal to make a metal-loaded extrudate; and
d. post-treating the metal-loaded extrudate by subjecting the metal-loaded extrudate to drying and calcination.

15. The method for making a second-stage hydrocracking catalyst of claim 14 , wherein the metal impregnation solution has a basic pH from 9.2 to 9.5.

Assignees

• Jia Jifei
• Rainis Andrew
• Maesen Theodorus Ludovicus Michael
• Coser Richard
• Zhang Yihua
• Chevron Usa Inc

Inventors

• Jia Jifei
• Rainis Andrew
• Maesen Theodorus Ludovicus Michael
• Coser Richard
• Zhang Yihua

Classifications

• B01J29/12 Primary

  Noble metals · CPC title

• B01J37/30

  Ion-exchange · CPC title

• B01J2229/42

  Addition of matrix or binder particles · CPC title

• B01J37/04

  Mixing {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• B01J37/0009

  Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst · CPC title