Organosulfur oxidation process
First Claim
Patent Images
1. A process comprising contacting a fuel stream containing organosulfur impurities with an organic hydroperoxide in the presence of a catalyst obtained by a method comprising the steps of:
- (a) impregnating an inorganic siliceous solid with a titanium source selected from the group consisting of;
(1) a solution of a titanium halide in a non-oxygenated hydrocarbon solvent; and
(2) a vapor stream of titanium tetrachloride;
(b) calcining the impregnated siliceous solid to form the catalyst; and
(c) optionally, heating the catalyst in the presence of water;
wherein a substantial portion of the organosulfur impurities are converted into sulfones.
22 Assignments
0 Petitions
Accused Products
Abstract
This invention is a method of oxidizing organosulfur impurites found in fuel streams. The method comprises reacting the organosulfur impurities with an organic hydroperoxide in the presence of a titanium-containing catalyst. The titanium-containing catalyst is obtained by impregnating a siliceous solid with a titanium halide in a hydrocarbon solvent, or a vapor stream of titanium tetrachloride, followed by calcination. The resulting sulfones are more readily removed from the fuel stream than the non-oxidized organosulfur impurities.
-
Citations
20 Claims
-
1. A process comprising contacting a fuel stream containing organosulfur impurities with an organic hydroperoxide in the presence of a catalyst obtained by a method comprising the steps of:
-
(a) impregnating an inorganic siliceous solid with a titanium source selected from the group consisting of;
(1) a solution of a titanium halide in a non-oxygenated hydrocarbon solvent; and
(2) a vapor stream of titanium tetrachloride;
(b) calcining the impregnated siliceous solid to form the catalyst; and
(c) optionally, heating the catalyst in the presence of water;
wherein a substantial portion of the organosulfur impurities are converted into sulfones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A process comprising contacting a diesel fuel stream containing organosulfur impurities with t-butyl hydroperoxide in the presence of a catalyst obtained by a method comprising the steps of:
-
(a) impregnating an inorganic siliceous solid with a titanium source selected from the group consisting of;
(1) a solution of a titanium chloride in a non-oxygenated hydrocarbon solvent; and
(2) a vapor stream of titanium tetrachloride;
(b) calcining the impregnated siliceous solid to form the catalyst; and
(c) optionally, heating the catalyst in the presence of water;
wherein a substantial portion of the organosulfur impurities are converted into sulfones. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification