Platinum encapsulated zeolite hydrocracking catalyst and methods of making same

Patent metadata

Field	Value
Publication number	US-11745170-B2
Application number	US-202117232359-A
Country	US
Kind code	B2
Filing date	Apr 16, 2021
Priority date	Dec 6, 2019
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

Embodiments of the present disclosure are directed to hydrocracking catalysts and methods of making same. The hydrocracking catalyst comprises a platinum encapsulated zeolite having a crystallinity greater than 20% determined by X-ray powder diffraction analysis.

First claim

What is claimed is:

1. A method of producing a hydrocracking catalyst, in which the method comprises:
adding sodium hydroxide, an aluminum compound, a salt having an anion and a cation, and a silicon compound to an aqueous solution to form an aqueous mixture;
stirring the aqueous mixture;
adding a platinum compound to the aqueous mixture to form a pre-catalyst mixture;
heating the pre-catalyst mixture at from 80° C. to 200° C. for at least 24 hours, thereby crystalizing the pre-catalyst mixture to form the hydrocracking catalyst comprising platinum encapsulated zeolite.

2. The method of claim 1 , wherein the zeolite is sodalite.

3. The method of claim 1 , in which the hydrocracking catalyst comprises greater than 20% crystallinity determined by X ray powder diffraction analysis.

4. The method of claim 1 , in which the aluminum compound comprises aluminum metal powder, aluminum hydroxide, sodium aluminate, or combinations thereof.

5. The method of claim 1 , in which the silicon compound comprises silica, sodium silicate, colloidal silica, fumed silica, or combinations thereof.

6. The method of claim 1 , in which the salt comprises sodium chloride, potassium dichromate, calcium chloride, sodium bisulfate, copper sulfate, or combinations thereof.

7. The method of claim 1 , in which the platinum compound comprises a platinum salt selected from the group of Pt(NH 3 )Cl 2 , PtCl 2 , PtCl 4 , (NH 4 )2PtCl 6 , (NH 4 )2Pt(NO 3 ) 2 , Na 2 PtCl 6 .6H 2 O, H 2 PtCl 6 .6H 2 O, Na 2 PtCl 4 .4H 2 O, (NH 4 )2PtCl 4 , or combinations thereof.

8. The method of claim 1 , in which the pre-catalyst mixture comprises xNaOH:1Al 2 O3:2SiO 2 :yNaCl:z(NH 4 )2PtCl 4 :wH 2 O, where x=10-30, y=0-10, z=0.02-0.5, and w=100-500.

9. The method of claim 1 , further comprising blending the platinum encapsulated zeolite with zeolite Y.

10. The method of claim 9 , further comprising adding one or more metal-based catalysts selected from nickel, molybdenum, tungsten, or combinations thereof to the zeolite Y, to the platinum encapsulated zeolite, or to both.

11. The method of claim 10 , in which the one or more metal-based catalysts is mixed or impregnated into the zeolite Y, into the platinum encapsulated zeolite, or into both.

Assignees

• Saudi Arabian Oil Co

Inventors

• Ding Lianhui
• Al-Eid Manal

Classifications

• B01J35/393

  Metal or metal oxide crystallite size · CPC title

• B01J29/061 Primary

  containing metallic elements added to the zeolite · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J35/391

  Physical properties of the active metal ingredient · CPC title

• B01J35/19

  Catalysts containing parts with different compositions · CPC title