Regeneration of clay catalysts for alkylation of aromatic rings
US9744531B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 14, 2016 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Feb 4, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalysts, in particular clay catalysts, use in alkylation reaction of aromatic compounds, e.g., aromatic amines, that have lost activity during use, are regenerated by contacting the used catalyst with a mixture of a minor amount of an acid, in a mixture with water and an organic solvent. The regeneration process is readily incorporated into an alkylation process for aromatic amines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.