Desulfurization process
First Claim
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1. A process comprising:
- (a) contacting a fuel containing organosulfur impurities with an organic hydroperoxide in the presence of an oxidation catalyst to form an oxidized fuel, wherein a substantial portion of the organosulfur impurities are converted into sulfones and a residual amount of organic hydroperoxide remains in the oxidized fuel;
(b) extracting the sulfones from the oxidized fuel to form a fuel having a reduced amount of sulfones and a residual amount of organic hydroperoxide; and
(c) contacting the fuel from step (b) with a Group 4 to 11 transition metal-containing decomposition catalyst at a temperature in the range of 20 to 150°
C.
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Abstract
This invention is a method of purifying fuels containing organosulfur impurities. The fuel is oxidized with an organic hydroperoxide in the presence of an oxidation catalyst to form a sulfone product, followed by extraction of the sulfone product by solid-liquid or liquid-liquid extraction. The fuel is then contacted with a decomposition catalyst to remove the residual organic hydroperoxide from the fuel.
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Citations
11 Claims
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1. A process comprising:
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(a) contacting a fuel containing organosulfur impurities with an organic hydroperoxide in the presence of an oxidation catalyst to form an oxidized fuel, wherein a substantial portion of the organosulfur impurities are converted into sulfones and a residual amount of organic hydroperoxide remains in the oxidized fuel; (b) extracting the sulfones from the oxidized fuel to form a fuel having a reduced amount of sulfones and a residual amount of organic hydroperoxide; and (c) contacting the fuel from step (b) with a Group 4 to 11 transition metal-containing decomposition catalyst at a temperature in the range of 20 to 150°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification