Production and purification of phenol: hydroxyacetone removal by hydrotalcite
US6486365B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2521/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for converting carbonyl-type impurities contained in a phenolic solvent to high-boiling derivatives is provided by contacting the phenolic solvent with a hydrotalcite-type material (HTM). The phenol can be separated from the high-boiling derivatives using conventional separation techniques, such as distillation, so the invention also provides a process for separating carbonyl-type impurities, such as hydroxyacetone (HA), from a phenolic solvent. The process can be applied in the conventional industrial process for converting cumene to phenol to remove carbonyl-type impurities from the phenol product. A process and a facility for producing purified phenol by converting cumene to phenol are provided. In the conversion of cumene to phenol, the phenol often contains carbonyl-type impurities. The phenol and carbonyl-type impurities are reacted in the presence of an HTM to produce phenol and high-boiling derivatives. The phenol may be further purified using conventional separation techniques, such as distillation, to remove the high-boiling derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.