Titanate bound photosensitizer for producing singlet oxygen
US4915804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Dec 20, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/904
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a photosensitizer which is bound to a titanate polymer, a method of preparing the bound photosensitizer and a process for using the bound photosensitizer. The photosensitizers which may be used in the invention include rose bengal, azure blue, rhodamine B, fluorescein and eosin. The photosensitizer is attached to the titanate by displacing a ligand on the titanate with a hydroxyl group on the photosensitizer. Finally, the bound photosensitizer may be used to oxidize undesirable oxidizable compounds present in a hydrocarbon or aqueous fraction. One specific example is the sweetening of kerosene which involves oxidizing the mercaptans contained in the kerosene to disulfides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.