Processes for producing fluorided solid oxides and uses thereof in metallocene-based catalyst systems

Patent metadata

Field	Value
Publication number	US-12544747-B2
Application number	US-202519050310-A
Country	US
Kind code	B2
Filing date	Feb 11, 2025
Priority date	Sep 27, 2018
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

Disclosed herein are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with an inorganic base to form an aqueous mixture having a pH of at least 4, followed by contacting a solid oxide with the aqueous mixture to produce the fluorided solid oxide. Also disclosed are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with a solid oxide to produce a mixture, followed by contacting the mixture with a inorganic base to produce the fluorided solid oxide at a pH of at least about 4. The fluorided solid oxide can be used as an activator component in a catalyst system for the polymerization of olefins.

First claim

We claim:

1 . A fluorided solid oxide comprising:
a solid oxide comprising an alumina, a silica-alumina, a silica-coated alumina, an alumina-boria, or any combination thereof, from about 0.5 to about 15 wt. % F, from about 0.5 to about 15 wt. % Zn, and from about 0.2 to about 1.2 wt. % B.

2 . The fluorided solid oxide of claim 1 , wherein the fluorided solid oxide has:
a total pore volume from about 0.5 to about 2.5 mL/g; a BET surface area from about 150 to about 700 m 2 /g; and an average (d50) particle size from about 10 to about 100 microns.

3 . The fluorided solid oxide of claim 2 , wherein the fluorided solid oxide comprises from about 2 to about 9 wt. % F.

4 . The fluorided solid oxide of claim 3 , wherein the solid oxide comprises the alumina.

5 . The fluorided solid oxide of claim 2 , wherein the fluorided solid oxide comprises from about 0.5 to about 5 wt. % Zn.

6 . The fluorided solid oxide of claim 5 , wherein the solid oxide comprises the silica-alumina.

7 . The fluorided solid oxide of claim 1 , wherein the solid oxide comprises the silica-alumina.

8 . The fluorided solid oxide of claim 1 , wherein the fluorided solid oxide comprises:
from about 3 to about 7 wt. % F; from about 1 to about 5 wt. % Zn; and from about 0.3 to about 1 wt. % B.

9 . The fluorided solid oxide of claim 8 , wherein the fluorided solid oxide has:
a total pore volume from about 0.5 to about 2.5 mL/g; a BET surface area from about 150 to about 700 m 2 /g; and an average (d50) particle size from about 10 to about 100 microns.

10 . The fluorided solid oxide of claim 9 , wherein the solid oxide comprises the alumina.

11 . The fluorided solid oxide of claim 9 , wherein the solid oxide comprises the silica-alumina.

12 . The fluorided solid oxide of claim 8 , wherein:
the fluorided solid oxide comprises Zn(BF 4 ) 2 .

13 . The fluorided solid oxide of claim 12 , wherein the fluorided solid oxide has:
a total pore volume from about 0.5 to about 2.5 mL/g; a BET surface area from about 150 to about 700 m 2 /g; and an average (d50) particle size from about 10 to about 100 microns.

14 . The fluorided solid oxide of claim 1 , wherein the fluorided solid oxide comprises ZnSiF 6 .

15 . The fluorided solid oxide of claim 1 , wherein the fluorided solid oxide comprises Zn(BF 4 ) 2 .

16 . The fluorided solid oxide of claim 1 , wherein the fluorided solid oxide comprises from about 4 to about 10 wt. % Zn(BF 4 ) 2 .

17 . A fluorided solid oxide comprising:
a solid oxide; from about 0.5 to about 15 wt. % F, from about 0.5 to about 15 wt. % Zn, and from about 0.2 to about 1.2 wt. % B, wherein the fluorided solid oxide comprises Zn(BF 4 ).

Assignees

• Chevron Phillips Chemical Co Lp

Inventors

• Mcdaniel Max P
• Clear Kathy S
• Yang Qing
• Crain Tony R

Classifications

• B01J37/0213

  Preparation of the impregnating solution · CPC title

• B01J37/0203

  the impregnation liquid containing organic compounds · CPC title

• B01J31/122

  Metal aryl or alkyl compounds · CPC title

• B01J27/138

  with alkaline earth metals, magnesium, beryllium, zinc, cadmium or mercury · CPC title

• B01J27/12

  Fluorides · CPC title