Manufacturing method of butadiene
US12384735B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 2022 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Oct 19, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/882
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A manufacturing method of butadiene includes an electrolytic reduction process that produces ethylene and oxygen from carbon dioxide and water as a raw material by electrolytic reduction, a butene producing process that produces butene by dimerizing the ethylene produced in the electrolytic reduction process, a mixing process that prepares a mixed gas by mixing the oxygen produced in the electrolytic reduction process, the butene produced in the butene producing process, and air, and a butadiene producing process that produces butadiene by heating the mixed gas and oxidatively dehydrogenating the butene, wherein carbon dioxide by-produced in the butadiene producing process is used as a portion of the raw material in the electrolytic reduction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.