IP Library Granted Patent US 12,091,373
Granted Patent B2
US 12,091,373 · App. 17/975,461 · Granted Sep 17, 2024

Systems and processes for catalytic conversion of C

Inventors: Jonathan Smith (Highlands Ranch, CO); Andrew Ingram (Denver, CO)
Assignee: Gevo, Inc.
C07C1/24C07C2529/06
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Quick Facts
Patent No.
US 12,091,373
App. No.
17/975,461
Granted
Sep 17, 2024
Kind
B2
Abstract

Processes for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins are provided. In one exemplary embodiment, the process can be a single stage process for the direct conversion of C 1 -C 5 alcohols to olefinic mixtures (e.g., C 2 -C 5 ) carried out in a reactor using a catalyst that includes zeolite doped with boron and phosphor. Systems for carrying out these processes are also provided.

Claims (25)

1. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:

contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a catalyst in a reactor to form an output stream with greater than about 75 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the catalyst consisting essentially of zeolite doped with boron and phosphor;

wherein the reactor is at a temperature from about 300° C. to about 600° C., a gauge pressure from 0 to about 30 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 10; and

wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 5 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.

2. The process of claim 1 , wherein the reactor is a single bed reactor.

3. The process of claim 2 , wherein the single bed reactor is a fixed bed reactor.

4. The process of claim 2 , wherein the single bed reactor is a fluidized bed reactor.

5. The process of claim 2 , wherein the single bed reactor is a moving bed reactor.

6. The process of claim 1 , wherein the one or more C 2 -C 5 olefins are present in the output stream in an amount that is from about 85 wt. % to about 99 wt. % of the total hydrocarbon products in the output stream.

7. The process of claim 1 , wherein the zeolite is a ZSM-5 zeolite.

8. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:

contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a single catalyst in a reactor to form an output stream with greater than about 75 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the single catalyst comprising zeolite doped with boron and phosphor;

wherein the reactor is at a temperature from about 350° C. to about 750° C., a gauge pressure from 0 to about 30 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 5; and

wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 5 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.

9. The process of claim 8 , wherein the single catalyst consists essentially of zeolite doped with boron and phosphor.

10. The process of claim 8 , wherein the reactor is a single bed reactor.

11. The process of claim 10 , wherein the single bed reactor is a fixed bed reactor.

12. The process of claim 10 , wherein the single bed reactor is a fluidized bed reactor.

13. The process of claim 10 , wherein the single bed reactor is a fluidized bed reactor.

14. The process of claim 8 , wherein the one or more C 2 -C 5 olefins are present in the output stream in an amount that is from about 85 wt. % to about 99 wt. % of the total hydrocarbon products in the output stream.

15. The process of claim 8 , wherein the zeolite is a ZSM-5 zeolite.

16. A process for converting one or more C 1 -C 5 linear or branched alcohols to one or more C 2 -C 5 olefins, the process comprising:

contacting an input stream comprising the one or more C 1 -C 5 linear or branched alcohols with a catalyst in a reactor to form an output stream with greater than 85 wt % carbon yield, the output stream comprising the one or more C 2 -C 5 olefins, the catalyst consisting essentially of a ZSM-5 zeolite doped with boron and phosphor;

wherein the reactor is at a temperature from about 350° C. to about 475° C., a gauge pressure from 0 to about 5 bar, and a weight hourly space velocity (WHSV) from about 0.25 to about 10;

wherein boron is present in the catalyst in an amount from about 0.05 wt. % to about 3 wt. %, and wherein phosphor is present in the catalyst in an amount from about 0.2 wt. % to about 7 wt. %.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2024
From: SMITH, JONATHAN
To: GEVO, INC.
Reel/Frame 068570/0782 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2024
From: SMITH, JONATHAN
To: GEVO, INC.
Reel/Frame 068570/0786 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2023
From: SMITH, JONATHAN; INGRAM, ANDREW
To: GEVO, INC.
Reel/Frame 065280/0467 →