Processes For Making Ethylene Glycol And/Or Propylene Glycol From Aldose- And/Or Ketose-Yielding Carbohydrates With Integrated Tungsten Catalyst Recovery
Patent No. EP4570370 (titled "Processes For Making Ethylene Glycol And/Or Propylene Glycol From Aldose- And/Or Ketose-Yielding Carbohydrates With Integrated Tungsten Catalyst Recovery") was filed by TEN Process Technology on Jan 19, 2023. The application was issued on Jun 18, 2025.
Patent Summary
A process for producing ethylene glycol and/or propylene glycol from carbohydrates using a tungsten-containing retro-aldol catalyst, where the catalyst is recovered through ion-exclusion chromatography and recycled to enhance catalytic activity. The process involves subjecting the carbohydrate to retro-aldol conditions followed by hydrogenation, with the resulting reaction product containing ethylene glycol and/or propylene glycol, organic acids, and tungsten species. The retained fraction is then subjected to ion-exclusion chromatography to separate the tungsten species from the organic acids, with the tungsten-containing eluant being recycled for reuse.
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EP4570370
- Application Number
- EP25162751A
- Filing Date
- Jan 19, 2023
- Status
- Request For Examination Was Made
- May 16, 2025
- Publication Date
- Jun 18, 2025
- External Links
- Slate, Register , Google Patents