Abstract: A method of preparing epoxidation catalysts is disclosed. The method comprises: (a) adding an inorganic siliceous solid to a column to produce a solid-filled column; (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent to produce a titanium tetrachloride-impregnated solid; and (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 500° C. to 1000° C. to produce the catalyst. The inorganic siliceous solid has a pore volume of at least 0.8 cm3/g.

Abstract: A method of preparing epoxidation catalysts is disclosed. The method comprises: (a) adding an inorganic siliceous solid to a column to produce a solid-filled column; (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent to produce a titanium tetrachloride-impregnated solid; and (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 500° C. to 1000° C. to produce the catalyst. The inorganic siliceous solid has a pore volume of at least 0.8 cm3/g.

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.

Abstract: A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of an epoxidation catalyst comprising a transition metal zeolite and a noble metal to produce a product stream comprising an epoxide and an alkane. The alkane is separated and oxidized to at least one oxygenated product.

Abstract: This invention is a process for oxidizing an organic compound with a hydrogen peroxide solution produced by reacting hydrogen and oxygen in the presence of an oxidation catalyst. The hydrogen peroxide is produced by reacting hydrogen and oxygen in a solvent in the presence of a H2O2-producing catalyst comprising a polymer-encapsulated combination of a noble metal and an ion-exchange resin. Polymer encapsulation of the H2O2-producing catalyst improves its productivity in making hydrogen peroxide and is expected to reduce metal loss.

Abstract: A process is disclosed for the epoxidation of an olefin with hydrogen and oxygen in the presence of an oxidation catalyst comprising a transition metal zeolite, and a noble metal catalyst comprising a noble metal and an ion-exchange resin. The process is highly productive and selective in making epoxides. A noble metal catalyst comprising a cation-exchanged resin further improves the productivity and/or the selectivity of the process.

Abstract: A process is disclosed for the epoxidation of an olefin with hydrogen and oxygen in the presence of an oxidation catalyst comprising a transition metal zeolite and a polymer-encapsulated noble metal catalyst. The noble metal catalyst comprises a noble metal and an ion-exchange resin. The process using the polymer-encapsulated noble metal catalyst gives higher epoxide productivity than a process that uses a noble metal catalyst which is not encapsulated by a polymer.

Abstract: Polymer-encapsulated ion-exchange resins are disclosed. The resins are useful in adsorption, catalysis, and other applications. Catalysts comprising a polymer-encapsulated combination of an ion-exchange resin and a transition metal are also disclosed. The catalysts are useful in hydrogenation, oxidation, hydroformylation, polymerization, and other valuable processes. Certain of the polymer-encapsulated catalysts enhance the productivity in the process for producing hydrogen peroxide from hydrogen and oxygen.

Abstract: A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the crystallization is removed, the resulting product is treated with hydrogen to form active catalyst for propylene oxide production.

Abstract: Titanium or vanadium zeolites are pretreated by contacting with an amino polyacid compound, such as ethylenediaminetetraacetic acid or a salt thereof, prior to use in olefin epoxidation with hydrogen peroxide.

Abstract: Noble metal-containing titanium or vanadium zeolite catalysts are prepared by adding a noble metal source to a titanium or vanadium zeolite that contains templating agent used in the preparation of the zeolite, and then removing the templating agent to form the noble metal-containing titanium or vanadium zeolite catalyst. The catalyst is useful in olefin epoxidation with oxygen and hydrogen.

Abstract: Used noble metal-containing titanium or vanadium zeolite catalysts, that have been employed in the epoxidation of olefins with hydrogen and oxygen, are regenerated by contacting the spent catalyst with water or an alcohol/water mixture at a temperature of 25° C. to 200° C.

Abstract: Catalysts useful for oxidation reactions are disclosed. The catalysts comprise a titanium zeolite, a transition metal, and a polymer, wherein at least one of the titanium zeolite or transition metal is encapsulated within a thin layer of the polymer. The catalysts are easy to prepare and use, they are easy to recover and reuse, and they provide good conversions in a variety of important oxidation processes, including propylene epoxidation. The invention includes a process which comprises oxidizing an organic compound in the presence of hydrogen, oxygen, and the catalyst, wherein the transition metal catalyzes formation of hydrogen peroxide in situ.

Abstract: A process for making hydrogen peroxide directly from hydrogen and oxygen is disclosed. The process comprises reacting the gases in a solvent in the presence of a catalyst comprising a polymer-encapsulated transition metal. Polymer-encapsulated transition metal catalysts are easy to prepare and use, they are easy to recover and reuse, and they provide good conversions to hydrogen peroxide.

Abstract: Catalysts useful for oxidation reactions are disclosed. The catalysts comprise a polymer-encapsulated titanium zeolite. The catalysts are easy to prepare and use, they are easy to recover and reuse, and they provide good conversions in a variety of important oxidation processes. The invention includes a process which comprises oxidizing an organic compound in the presence of hydrogen peroxide and a polymer-encapsulated titanium zeolite. In one example, the organic compound is propylene and the reaction product is propylene oxide.

Abstract: Used noble metal-containing titanium zeolite catalysts, that have been employed in the liquid-phase epoxidation of olefins with hydrogen and oxygen in the presence of a buffer, are regenerated by heating the used catalyst at a temperature of at least 250° C. in the presence of a oxygen-containing gas stream, followed by reduction at a temperature of at least 20° C. in the presence of a hydrogen-containing gas stream to form a reactivated catalyst.

Abstract: The invention is a process for epoxidizing olefins with hydrogen and oxygen in the presence of a palladium-containing titanium zeolite and a palladium-free titanium zeolite. The process exhibits good productivity and selectivity for olefin epoxidation with hydrogen, and oxygen. Surprisingly, the presence of palladium-free titanium zeolite in addition to the palladium-containing titanium zeolite in the process improves the palladium productivity of the process.

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.