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.
Abstract:
This invention relates to a photosensitizer which is bound to a polysiloxane 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, rhodamine B, acridine orange, methylene blue and zinc phthalocyanine. The photosensitizer is attached to the polysiloxane by reacting a hydroxyl or vinyl group on the photosensitizer with a hydrogen on the polyhydrosiloxane, thereby binding the photosensitizer into the polymer network. 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.
Abstract:
This invention relates to a photosensitizer which is bound to a cellulose acetate 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, rhodamine B, acridine orange, methylene blue and zinc phthalocyanine. The photosensitizer is attached to the cellulose acetate by reacting an acid group on the photosensitizer with a hydroxyl group. 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.
Abstract:
L'invention concerne un photosensibilisateur lié à un polymère de polysiloxane, une procédé de préparation du photosensibilisateur lié ainsi qu'un mode d'utilisation de ce dernier. Les photosensibilisateurs utilisables dans l'invention comprennent le rose bengale, la rhodamine B, l'orange-acridine, le bleu de méthylène et le phtalocyanine de zinc. On fixe le photosensibilisateur au polysiloxane en faisant réagir un groupe hydroxyle ou vinyle situé sur ledit photosensibilisateur avec un hydrogène situé sur le polyhydrosiloxane, liant ainsi le photosensibilisateur dans le réseau polymère. Enfin, on peut utiliser le photosensibilisateur lié afin d'oxyder des composés oxydables indésirables présents dans une fraction d'hydrocarbure ou aqueuse. Un exemple spécifique est l'adoucissement de kérosène consistant à oxyder les mercaptans contenus dans le kérosène.