Process for Pd-catalyzed hydroxycarbonylation of diisobutene: ligand/Pd ratio
US-10519091-B2 · Dec 31, 2019 · US
Catalyst for the gas phase production of carboxylic acids
US10144693B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10144693-B2 |
| Application number | US-201515518060-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 6, 2015 |
| Priority date | Oct 17, 2014 |
| Publication date | Dec 4, 2018 |
| Grant date | Dec 4, 2018 |
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Abstract
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Carboxylic acids are prepared by a one-step gas phase process comprising the step of contacting under halogen-free hydroxycarbonylation conditions an alkene, carbon monoxide, water, and a solid sulfide-containing catalyst.
First claim
Opening claim text (preview).
What is claimed is: 1. A gas phase process comprising producing a carboxylic acid by contacting at a temperature of from more than 250° C. to 400° C. under halogen-free hydroxycarbonylation conditions an alkene, carbon monoxide gas, water and a solid metal sulfide catalyst comprising at least one Group VIII metal, other than Pd. 2. The process of claim 1 in which the catalyst comprises at least one of cobalt, nickel, rhodium and, ruthenium. 3. The process of claim 2 in which the catalyst comprises at least one of cobalt, nickel, and, ruthenium. 4. The process of claim 1 in which the alkene comprises at least one alkene selected from the group of (a) a monoolefinic alkene and (b) a polyolefinic alkene. 5. The process of claim 1 wherein the process is continuous. 6. The process of claim 1 in which the alkene is ethylene in the gas phase. 7. The process of claim 1 in which the hydroxycarbonylation conditions include a pressure from 0.1 MPa to 10 MPa. 8. The process of claim 1 conducted in a trickle-bed reactor. 9. The process of claim 1 wherein the catalyst is supported. 10. The process of claim 1 wherein the catalyst is cobalt sulfide. 11. The process of claim 1 wherein the alkene is ethylene. 12. A gas phase, continuous process comprising producing propionic acid by contacting at a temperature of from more than 250° C. to 400° C., at a pressure of 0.1 MPa to 10 MPa, and under hydroxycarbonylation conditions ethylene, carbon monoxide gas, water and a solid metal sulfide catalyst comprising at least one Group VIII metal, other than Pd, wherein the process comprises less than 1 ppm halogen based on the combined weight of the reactants.
Assignees
Inventors
Classifications
Propionic acid · CPC title
controlling the pressure · CPC title
Sulfides; Oxysulfides · CPC title
- C07C51/14Primary
on a carbon-to-carbon unsaturated bond in organic compounds · CPC title
Use of additives, e.g. for stabilisation · CPC title
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Frequently asked questions
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- What does patent US10144693B2 cover?
- Carboxylic acids are prepared by a one-step gas phase process comprising the step of contacting under halogen-free hydroxycarbonylation conditions an alkene, carbon monoxide, water, and a solid sulfide-containing catalyst.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C07C51/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 04 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).