Titanate bound photosensitizer for producing singlet oxygen

Details Titanate bound photosensitizer for producing singlet oxygen Titanate bound photosensitizer for producing singlet oxygen

1988-12-20

1990-04-10

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415749, 20415776, 20415821, 2041582, 20415715, 502171, 502172, 502162, 502168, 502167, 427221, 427216, 4273897, 4273936, 522904, 528 9, 528 10, B01J 1908, B01J 3100, B05D 700, B05D 302

Patent

active

049158040

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.

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N. J. Turro, MODERN MOLECULAR PHOTOCHEMISTRY, Benjamin/Cummings Publishing Co., Inc., pp. 309-311, (1978).

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