Hybrid catalysts comprising a zeolite and a mixed metal oxide component for converting syngas into C2 and C3 olefins

Patent metadata

Field	Value
Publication number	US-11884605-B2
Application number	US-201917253925-A
Country	US
Kind code	B2
Filing date	Jun 20, 2019
Priority date	Jun 29, 2018
Publication date	Jan 30, 2024
Grant date	Jan 30, 2024

Abstract

A hybrid catalyst including a metal oxide catalyst component comprising chromium, zinc, and at least one additional metal selected from the group consisting of aluminum and gallium, and a microporous catalyst component that is a molecular sieve having 8-MR pore openings. The metal oxide catalyst component includes anatomic ratio of chromium:zinc (Cr:Zn) from 0.35 to 1.00, and the at least one additional metal is present in an amount from 25.0 at % to 40.0 at %. A process for preparing C2 and C3 olefins comprising: a) introducing a feed stream comprising hydrogen gas and a carbon-containing gas selected from the group consisting of carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor; and b) converting the feed stream into a product stream comprising C2 and C3 olefins in the reaction zone in the presence of said hybrid catalyst.

First claim

The invention claimed is:

1. A process for preparing C 2 and C 3 olefins comprising:
introducing a feed stream comprising hydrogen gas and a carbon-containing gas selected from the group consisting of carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor; and
converting the feed stream into a product stream comprising C 2 and C 3 olefins in the reaction zone in the presence of a hybrid catalyst, wherein the hybrid catalyst comprises:
a metal oxide catalyst component comprising chromium, zinc, and at least one additional metal selected from the group consisting of aluminum and gallium; and
a SAPO-34 microporous catalyst component, wherein
an atomic ratio of chromium:zinc (Cr:Zn) is from 0.35 to 1.00, and
the at least one additional metal is present in an amount from 25.0 at % to 40.0 at %.

2. The process of claim 1 , wherein the at least one additional metal is aluminum.

3. The process of claim 2 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.90.

4. The process of claim 2 , wherein the metal oxide catalyst component is calcined at a temperature less than 500° C.

5. The process of claim 1 , wherein the at least one additional metal is gallium.

6. The process of claim 5 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.90.

7. The process of claim 5 , wherein the metal oxide catalyst component is calcined at a temperature less than 500° C.

8. The process of claim 1 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.90.

9. The process of claim 1 , wherein the metal oxide catalyst component is calcined at a temperature less than 500° C.

10. The process of claim 9 , wherein the metal oxide catalyst component is calcined at temperatures from 300° C. to less than 500° C.

11. The process of claim 9 , wherein the at least one additional metal is present in an amount from 25.0 at % to 39.0 at %.

12. The process of claim 9 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.50.

13. The process of claim 1 , wherein the metal oxide catalyst component is calcined at temperatures greater than or equal to 500° C.

14. The process of claim 13 , wherein the metal oxide catalyst component is calcined at temperatures from 500° C. to 600° C.

15. The process of claim 14 , wherein the at least one additional metal is present in an amount from 25.0 at % to 35.0 at %.

16. The process of claim 14 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.5.

17. The process of claim 13 , wherein the at least one additional metal is present in an amount from 25.0 at % to 35.0 at %.

18. The process of claim 13 , wherein the atomic ratio of chromium to zinc is from 0.35 to 0.5.

Assignees

• Dow Global Technologies Llc

Inventors

• Pollefeyt Glenn
• Nieskens Davy L S
• Santos Castro Vera P
• Kirilin Alexey
• Chojecki Adam
• Yancey David
• Malek Andrzej

Classifications

• C07C1/043 Primary

  characterised by the composition · CPC title

• B01J21/04

  Alumina · CPC title

• B01J23/002 Primary

  Mixed oxides other than spinels, e.g. perovskite · CPC title

• B01J23/26

  Chromium · CPC title

• B01J29/85

  Silicoaluminophosphates [SAPO compounds] · CPC title