Phosphate-promoted nickel catalyst for high temperature oligomerization

Patent metadata

Field	Value
Publication number	US-11084023-B2
Application number	US-201916362132-A
Country	US
Kind code	B2
Filing date	Mar 22, 2019
Priority date	Mar 22, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

An oligomerization catalyst, oligomer products, methods for making and using same. The catalyst can include a supported nickel phosphate compound. The catalyst is stable at oligomerization temperatures of 500° C. or higher and particularly useful for making oligomer products containing C4 to C26 olefins having a boiling point in the range of 170° C. to 360° C.

First claim

What is claimed is:

1. A method for making light hydrocarbon oligomers, comprising:
reacting one or more C 2 to C 12 olefins with a supported nickel phosphate catalyst at a temperature of about 500° C. or higher to provide an oligomer product comprising C 4 to C 26 olefins, wherein the nickel is present in an amount ranging from about 2 wt % to about 20 wt %, based on the total weight of the catalyst, and wherein the support material is silica having a pore size of about 50 Å to about 500 Å, and a surface area of about 100 m 2 /g to about 600 m 2 /g.

2. The method of claim 1 , wherein the one or more C 2 to C 12 olefins and the supported nickel phosphate catalyst are reacted at a pressure of about 6.8 Bar(g) to about 138 Bar(g).

3. The method of claim 1 , wherein the one or more C 2 to C 12 olefins consist essentially of ethylene and propylene.

4. The method of claim 1 , wherein the oligomer product consists essentially of C 4 to C 26 olefins.

5. The method of claim 1 , wherein the oligomer product consists essentially of C 12 to C 20 olefins having a boiling point in the range of 170° C. to 360° C.

6. A method for making light hydrocarbon oligomers, comprising:
reacting one or more C 2 to C 12 olefins with a supported nickel phosphate catalyst at a temperature of about 500° C. or higher to provide an oligomer product comprising C 4 to C 26 olefins, wherein the support material is amorphous silica and the nickel is present in an amount ranging from about 2 wt % to about 20 wt %, based on the total weight of the catalyst.

7. The method of claim 6 , wherein the reaction temperature is about 525° C. or higher.

8. The method of claim 6 , wherein the one or more C 2 to C 12 olefins and the supported nickel phosphate catalyst are reacted at a pressure of about 6.8 Bar(g) to about 138 Bar(g).

9. The method of claim 6 , wherein the one or more C 2 to C 12 olefins consist essentially of ethylene and propylene.

10. The method of claim 6 , wherein the oligomer product consists essentially of C 4 to C 26 olefins.

11. The method of claim 6 , wherein the oligomer product consists essentially of C 12 to C 20 olefins having a boiling point in the range of 170° C. to 360° C.

12. The method of claim 6 , wherein the amorphous silica support material has a pore size of about 50 Å to about 500 Å.

13. The method of claim 6 , wherein the amorphous silica support material has a surface area of about 100 m 2 /g to about 600 m 2 /g.

14. A method for making light hydrocarbon oligomers, comprising:
reacting one or more C 2 to C 12 olefins with a supported nickel phosphate catalyst at a temperature of about 525° C. or higher to provide an oligomer product comprising C 4 to C 26 olefins, wherein the support material is amorphous silica having a pore size of about 50 Å to about 500 Å and wherein the nickel is present in an amount ranging from about 2 wt % to about 20 wt %, based on the total weight of the catalyst.

15. The method of claim 14 , wherein the one or more C 2 to C 12 olefins consist essentially of ethylene and propylene.

16. The method of claim 14 , wherein the oligomer product consists essentially of C 4 to C 26 olefins.

17. The method of claim 14 , wherein the oligomer product consists essentially of C 12 to C 20 olefins having a boiling point in the range of 170° C. to 360° C.

Assignees

• Purdue Research Foundation

Inventors

• Miller Jeffrey T
• Zhang Guanghui

Classifications

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2523/847

  Nickel · CPC title

• B01J37/035

  Precipitation on carriers · CPC title

• C07C2/06

  of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• C07C2/24

  with metals · CPC title