Disclosed are methods for preparing a salt of urolithin A and, in turn, urolithin A. The methods are advantageous for the large-scale preparation of urolithin A or a pharmaceutically acceptable salt thereof.

Disclosed are methods for preparing a salt of urolithin A and, in turn, urolithin A. The methods are advantageous for the large-scale preparation of urolithin A or a pharmaceutically acceptable salt thereof.

Enhanced oxygen transfer agent systems and methods of use thereof are provided. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent includes an oxygen-donating chalcogen agent including at least one of S, Se, or Te and a reducible metal oxide. The chalcogen has an oxidation state greater than +2. A method for producing one or more olefins by partial combustion of a hydrocarbon feed is provided. The method includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaSO.sub.4 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.

Enhanced oxygen transfer agent systems and methods of use thereof are provided. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent includes an oxygen-donating chalcogen agent including at least one of S, Se, or Te and a reducible metal oxide. The chalcogen has an oxidation state greater than +2. A method for producing one or more olefins by partial combustion of a hydrocarbon feed is provided. The method includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaSO.sub.4 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.

The present invention relates a hybrid material comprising: a protein matrix comprising the lipase B from Candida antarctica and nanoparticles of copper species selected from: Cu (0), Cu.sub.2O Cu.sub.3(PO.sub.4).sub.2 or any combination thereof, having their larger dimension between 3 and 15 nm. The material was prepared by the use of an enzyme in a buffer solution and a copper salt at room temperature. The material shows excellent catalase-like activity, excellent catalytic capacity in the degradation of organic pollutants, like Bisphenol A, and in the reduction of 4-nitrophenol to 4-aminophenol.

The present invention relates a hybrid material comprising: a protein matrix comprising the lipase B from Candida antarctica and nanoparticles of copper species selected from: Cu (0), Cu.sub.2O Cu.sub.3(PO.sub.4).sub.2 or any combination thereof, having their larger dimension between 3 and 15 nm. The material was prepared by the use of an enzyme in a buffer solution and a copper salt at room temperature. The material shows excellent catalase-like activity, excellent catalytic capacity in the degradation of organic pollutants, like Bisphenol A, and in the reduction of 4-nitrophenol to 4-aminophenol.

The present invention is directed to a shaped catalyst body for preparing ethylene oxide, which comprises at least silver, cesium and rhenium applied to an alumina support, wherein the alumina support comprises Si, Ca, and Mg in a defined amount. Furthermore, the present invention is directed to a process for preparing the catalyst according to the present invention and process for preparing ethylene oxide by gas-phase oxidation of ethylene by means of oxygen in the presence of a shaped catalyst body according to the present invention.

The oxidative coupling of methane (OCM) and the oxidative dehydrogenation (ODH) of ethane and higher hydrocarbons is described using SO.sub.3 and sulfate, sulfite, bisulfite and metabifulfite salts as oxygen transfer agents in the presence of one or more elements selected from Groups 3 to 14 of the periodic table, optionally further in the presence of alkali or alkaline salts and/or sulfur-containing compounds.

The oxidative coupling of methane (OCM) and the oxidative dehydrogenation (ODH) of ethane and higher hydrocarbons is described using SO.sub.3 and sulfate, sulfite, bisulfite and metabifulfite salts as oxygen transfer agents in the presence of one or more elements selected from Groups 3 to 14 of the periodic table, optionally further in the presence of alkali or alkaline salts and/or sulfur-containing compounds.

Disclosed is a catalyst useful for producing organic amines by catalytic amination, its preparation and application thereof, wherein the catalyst comprises an inorganic porous carrier containing aluminum and/or silicon and an active metal component supported on the carrier, the active metal component comprises at least one metal selected from the group consisting of Group VIII and Group IB metals, and the carrier has an ammonia adsorption capacity of 0.25 to 0.65 mmol/g, as measured by NH.sub.3-TPD test. The catalyst has an improved performance, when used for producing organic amines by catalytic amination.