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Chemistry Of Hydrocarbon Compounds > Aromatic Compound Synthesis > Having Alkenyl Moiety, E.g., Styrene, Etc. > By Dehydrogenation > Using Metal Oxide, Sulfide, Or Salt Using Metal Oxide, Sulfide, Or SaltUsing Metal Oxide, Sulfide, Or Salt patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/05/06 - 20060224029 - Method of extending catalyst life in vinyl aromatic hydrocarbon formation Methods of extending the life of dehydrogenation catalyst are described herein. For example, one embodiment includes providing a catalytic dehydrogenation system, wherein the catalytic dehydrogenation system includes at least one reaction vessel, the at least one reaction vessel loaded with a dehydrogenation catalyst including an alkali metal enhanced iron oxide, ... 08/31/06 - 20060194992 - Treatment of alkylation catalyst poisons with dehydrogenation Methods and processes for reducing alkylation catalyst poisoning are described herein. Such methods generally include contacting ethylbenzene with a dehydrogenation catalyst to form a dehydrogenation output stream within a dehydrogenation system and passing at least a portion of the dehydrogenation output stream to an alkylation system, wherein the at least ... 08/17/06 - 20060183953 - Method and apparatus for addition of aqueous solutions to high temperature processes Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing a reaction vessel loaded with a dehydrogenation catalyst with a feedstream via a conduit in operable communication with the reaction vessel. The feedstream may include an alkyl aromatic hydrocarbon and ... 06/29/06 - 20060142628 - Radial reactor loading of a dehydrogenation catalyst A radial reactor for utilization for catalytic reactions of gaseous or liquid feedstreams including an annular catalyst bed, wherein the material contained within the catalyst bed includes an active catalyst material, contained within an outer ring-shaped layer of the catalyst bed, and a generally inert material, contained within an inner ... 06/22/06 - 20060135831 - Dehydrogenation process A process for the dehydrogenation of a C2 or C3 alkyl aromatic compound to a corresponding vinyl aromatic compound in a tubular reactor incorporating a spiral flow path. Preferred embodiments of the invention provide processes for the production of styrene or divinylbenzene by the catalytic dehydrogenation of ethylbenzene or diethylbenzene, ... 05/18/06 - 20060106269 - Methods for designing and operating a dehydrogenation process system that uses a high stability dehydrogenation catalyst A method of improving the operation a dehydrogenation reactor system having a dehydrogenation reactor defining a dehydrogenation reaction zone and containing a first volume of a dehydrogenation catalyst. The method comprises removing from the dehydrogenation reactor at least a portion of the first volume of the dehydrogenation catalyst; placing in ... 05/18/06 - 20060106268 - High activity and high stability iron oxide based dehydrogenation catalyst having a low concentration of titanium and the manufacture and use thereof A high activity and high stability dehydrogenation catalyst, its manufacture and its use. The catalyst comprises an iron ox:de component having a low titanium content, wherein the iron oxide component is made by the heat-treating of a yellow iron oxide precipitate made by precipitating from a solution of an iron ... 05/18/06 - 20060106267 - Process for the manufacture of an alkenyl aromatic compound under low steam-to-oil process conditions An improved dehydrogenation process that comprises the dehydrogenation of dehydrogenatable hydrocarbons by the utilization of an iron oxide based dehydrogenation catalyst composition having a low titanium content under low steam-to-oil process conditions. ... 05/04/06 - 20060094914 - Paraffin dehydrogenation catalyst One aspect of the invention relates to a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide. The invention also relates to methods of making the dehydrogenation catalyst composite. Another aspect of the invention relates to method of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon ... 01/12/06 - 20060009668 - Process for the dehydrogenation of an unsaturated hydrocarbon contacting in a second step a reaction product of the first step comprising the first unsaturated hydrocarbon and the second unsaturated hydrocarbon with a second dehydrogenation catalyst having a temperature parameter T2 and a selectivity parameter S2, such that T1<T2 and S1<S2. ... 11/03/05 - 20050245779 - Eb/sm splitter heat recovery Improved methods and related apparatus are disclosed for efficiently recovering the heat of condensation from overhead vapor produced during separation of various components of dehydrogenation reaction effluent, particularly in ethylbenzene-to-styrene operations, by the use of at least a compressor to facilitate azeotropic vaporization of an ethylbenzene and water mixture within ... 10/27/05 - 20050240069 - Novel graphite nanocatalysts Novel catalysts comprised of graphitic nanostructures. The graphitic nanostructure catalysts are suitable for catalyzing reactions such as oxidation, hydrogenation, oxidative-hydrogenation, and dehydrogenation. ... 10/06/05 - 20050222477 - Method for extending catalyst life in processes for preparing vinyl aromatic hydrocarbons Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing an alkyl aromatic hydrocarbon feed stream to a reaction chamber, contacting the feed stream with a dehydrogenation catalyst to form a vinyl aromatic hydrocarbon, the dehydrogenation catalyst including iron oxide ... 08/11/05 - 20050177016 - Reactor-regenerator device and use thereof in the production of styrene Reactor-regenerator device, comprising at least one reactor for catalytic dehydrogenation reactions of hydrocarbons and at least one regenerator of the catalyst of the “fast riser” type wherein the regenerator-riser is a substantially tubular apparatus for chemical reactions which comprise a gaseous phase in close contact with a solid phase, wherein ... 07/28/05 - 20050165263 - Catalyst for the dehydrogenation of ethylbenzene to styrene The present invention relates to a catalyst for the dehydrogenation of ethylbenzene to styrene and to a process for the preparation thereof. The catalyst contains iron oxide, potassium oxide and calcium oxide, preferably also cerium oxide and molybdenum oxide, and is characterised by a magnesium content (expressed as MegO) lower ... ### FreshPatents.com Support |