Cellulose acetate bound photosensitizer for producing singlet ox

Details Cellulose acetate bound photosensitizer for producing singlet ox Cellulose acetate bound photosensitizer for producing singlet ox

1990-08-29

1991-01-22

Nutter, Nathan M.

Liquid purification or separation

Processes

Chemical treatment

430 56, 430 73, 430 83, 430154, 430170, 2521881, C02F 170, G03G 1500, G03G 500, G03G 1506

Patent

active

049869213

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.

REFERENCES:
patent: 4315998 (1982-02-01), Neckers et al.

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