Processes for preparing C2 to C3 hydrocarbons in the presence of a hybrid catalyst

Patent metadata

Field	Value
Publication number	US-12454496-B2
Application number	US-202118003800-A
Country	US
Kind code	B2
Filing date	Jun 18, 2021
Priority date	Jun 30, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A process for preparing C2 to C3 hydrocarbons may include introducing a feed stream including hydrogen gas and a carbon-containing gas comprising carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C3 hydrocarbons in the reaction zone in the presence of a hybrid catalyst. The hybrid catalyst may include a metal oxide catalyst component and a microporous catalyst component comprising 8-MR pore openings less than or equal to 5.1 A and a cage defining ring size less than or equal to 7.45 A, where a C2/C3 carbon molar ratio of the product stream is greater than or equal to 0.7.

First claim

The invention claimed is:

1. A process for preparing C 2 to C 3 hydrocarbons 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 to C 3 hydrocarbons in the reaction zone in the presence of a hybrid catalyst, the hybrid catalyst comprising:
a mixed metal oxide catalyst component; and
a microporous catalyst component comprising 8-MR pore openings having a size less than or equal to 5.1 {acute over (Å)} and a cage defining ring size less than or equal to 7.45 {acute over (Å)}, wherein:

a C 2 /C 3 carbon molar ratio of the product stream is greater than or equal to 0.7.

2. The process of claim 1 , wherein the microporous catalyst component comprises one or more of silicaaluminate or silicoaluminophosphate (SAPO).

3. The process of claim 1 , wherein the microporous catalyst component comprises an Erionite or Levyne structure.

4. The process of claim 1 , wherein the microporous catalyst component comprises one or more of SAPO-17, SAPO-35, LZ-220, SSZ-17, SSZ-98, SSZ-105, SAPO-67, or combinations thereof.

5. The process of claim 1 , wherein the microporous catalyst component comprises a SiO 2 /Al 2 O 3 molar ratio less than or equal to 50.0.

6. The process of claim 1 , wherein the metal component comprises from 0.1 wt. % to 10.0 wt. % of the metal oxide catalyst component.

7. The process of claim 1 , wherein the mixed metal oxide catalyst component comprises a metal oxide support material comprising zirconia.

8. The process of claim 7 , wherein the mixed metal oxide catalyst component comprises gallium supported on zirconia.

9. The process of claim 1 , wherein the reaction zone operates at a temperature from 370° C. to 470° C.

10. The process of claim 1 , wherein the reaction zone operates at a pressure from 20 bar to 70 bar.

11. The process of claim 1 , wherein the gas hourly space velocity (GHSV) is greater than 500 hr −1 .

12. The process of claim 1 , wherein the hybrid catalyst comprises a metal oxide catalyst component to microporous catalyst component weight ratio of from 0.1:1 to 10:1.

13. The process of claim 1 , wherein the product stream comprises greater than 40 C mol % C 2 to C 3 hydrocarbons based on the total hydrocarbon fraction in the product stream.

14. The process of claim 1 , wherein the C 2 /C 3 carbon molar ratio of the product stream is greater than or equal to 1.0.

15. The process of claim 1 , wherein the C 2 to C 3 hydrocarbons consist essentially of olefins.

Assignees

• Dow Global Technologies Llc

Inventors

• Kirilin Alexey
• Millar Dean M
• Chojecki Adam
• Dewilde Joseph F
• Pollefeyt Glenn
• Nieskens Davy L S
• Malek Andrzej

Classifications

• B01J35/643

  less than 2 nm · CPC title

• C07C2529/60

  of the type L · CPC title

• C07C2529/50

  of the eroionite or offretite type, e.g. zeolite T · CPC title

• C07C2523/08

  of gallium, indium or thallium · CPC title

• C07C2521/06

  Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof · CPC title