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| Number | Title | Issue Date |
| 7816576 | Method for catalytically dehydrating hydrocarbons The invention relates to a method for producing unsaturated hydrocarbons. According to said method, in a first step, a hydrocarbon, especially a mixture which contains alkanes, essentially no water, and can contain water vapour, is continuously guided through a firs... | 10/19/2010 |
| 7754935 | Dehydrogenation reactions in narrow reaction chambers and integrated reactors Methods of dehydrogenating hydrocarbons to yield unsaturated compounds are described. Reactor configurations useful for dehydrogenation are also described. Hydrocarbons can be dehydrogenated, for relatively long periods of time-on-stream, in a reaction chamber havin... | 07/13/2010 |
| 7678956 | Method for catalytically dehydrating propane to form propylene The invention relates to a method for producing propylene during which a first gas mixture, which is technically free of oxygen but contains propane, water vapor and hydrogen, and which has a temperature of at least 400° C., is led into a reaction device having at ... | 03/16/2010 |
| 7321058 | Method for producing acrolein and/or acrylic acid Acrolein and/or acrylic acid are prepared from propane and/or propene by a process comprising the following steps: (a) separation of propane and/or propene from a propane- and/or propene-containing gas mixture by absorption in an absorbent, (b) separation of the pro... | 01/22/2008 |
| 7271307 | Method for improving the performance of a dehydrogenation catalyst The present development relates to a modification of the Houdry process for the dehydrogenation of aliphatic hydrocarbons, whereby the dehydrogenation cycle is extended, or lengthened, and hydrogen gas is added into the reaction. The combination of the extended cycl... | 09/18/2007 |
| 7256319 | Catalysts for production of olefins by oxidative dehydrogenation, and methods of making and using the same The present invention provides a catalyst composition for the production of olefins by oxidative dehydrogenation of hydrocarbons, and of using such catalyst compositions. The catalysts of the present invention include compositions of the formula: Xx | 08/14/2007 |
| 7244868 | Process for the dehydrogenation of an unsaturated hydrocarbon A process for the catalytic dehydrogenation of a first unsaturated hydrocarbon to form a second unsaturated hydrocarbon which has one olefinically unsaturated bond more than the first unsaturated hydrocarbon and otherwise an unchanged carbon skeleton, which process ... | 07/17/2007 |
| 7235706 | Process for preparing light olefins by dehydrogenation of the corresponding paraffins A process for preparing light olefins from corresponding paraffins consists of reacting said paraffins in a reactor, operating at a temperature of between 450 and 800° C., a pressure of between 0.1 and 3 atm absolute and a GHSV of between 100 and 10000 h−1 | 06/26/2007 |
| 7161051 | Integration of a methanol synthesis system with a methanol to olefin reaction system Disclosed is a process for producing light olefins in an integrated methanol synthesis/MTO reaction system. The integrated system implements a shared separation system for separating oxygenate components from the respective methanol synthesis system and MTO reaction... | 01/09/2007 |
| 7151198 | Integration of a methanol synthesis system with a methanol to olefin reaction system Disclosed is a process for producing light olefins in an integrated methanol synthesis/MTO reaction system. The integrated system implements a shared separation system for separating oxygenate components from the respective methanol synthesis system and MTO reaction... | 12/19/2006 |
| 7145051 | Combined oxydehydrogenation and cracking catalyst for production of olefins A catalyst is provided comprising (1) at least one solid acid component, and (2) at least one metal-based component comprised of one or more element from Groups 1–3, one or more element from Groups 4–15 and one or more element from Groups 16 and 17 of the Period... | 12/05/2006 |
| 7125817 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises (1) at least one solid acid component, (2) at least one metal-based component comprised of one or more elements from Group 3 a... | 10/24/2006 |
| 7122495 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst system contains at least one solid acid component and at least one metal-based component which consists of (a) oxygen and/or sulfur and ... | 10/17/2006 |
| 7122492 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises (1) at least one solid acid component, (2) at least one metal-based component comprised of one or more elements from Groups 1 ... | 10/17/2006 |
| 7122493 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises: (1) at least one solid acid component, (2) at least one metal-based compo... | 10/17/2006 |
| 7122494 | Combined cracking and selective hydrogen combustion for catalytic cracking A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises (1) at least one solid acid component, (2) at least one metal-based component comprised of two or more elements from Groups 4â... | 10/17/2006 |
| 7119240 | Method for converting natural gas to olefins A process for converting natural gas to an olefin includes heating the gas to a selected range of temperature to convert a fraction of the gas stream to reactive hydrocarbons, primarily ethylene or acetylene, and reacting with hydrogen in the presence of a catalyst ... | 10/10/2006 |
| 7087801 | Process for catalytic selective oxidation of a hydrocarbon substrate A reactor system for oxidative conversion of hydrocarbons comprising at least one reactor tube being provided with a plurality of perforations along a wall of the tube and a reaction zone with an active catalyst arranged on tube side and/or shell side of the reactor... | 08/08/2006 |
| 7087802 | Method for the dehydrogenation of hydrocarbons In a process for the heterogeneously catalyzed dehydrogenation in one or more reaction zones of one or more dehydrogenatable C2-C30-hydrocarbons in a reaction gas mixture comprising them, with at least part of the heat of dehydrogenation requir... | 08/08/2006 |
| 7038098 | Method for dehydrogenating C-C-alkanes C2–C30-alkanes are dehydrogenated in a process in which (i) ethylbenzene is dehydrogenated to styrene in a first part process to give a hydrogen-containing offgas stream, and (ii) one or mor... | 05/02/2006 |
| 7011809 | Attrition resistant gamma-alumina catalyst support A γ-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate γ-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic materi... | 03/14/2006 |
| 6963018 | Integrated processes for olefin and polyolefin production Novel processes for the production of polyolefins, other polymers, and oxygenated compounds, such as polypropylene, polyethylene, polybutene-1, poly(isobutylene), polystyrene, poly(1,3-butadiene), ethylene oxide, propylene oxide, acrylonitrile, acrolein and others, ... | 11/08/2005 |
| 6635793 | Preparation of epoxides from alkanes using lanthanide-promoted silver catalysts A process is provided for use in the conversion of alkanes into alkylene oxides, having particular utility in the conversion of propane to form propylene oxide, using a lanthanide-promoted, supported, silver catalyst prepared via precipitation. A preferre... | 10/21/2003 |
| 6489258 | Synthesis and application of vapor grafted porous materials This invention provides an article, compositions, methods of making and uses of vapor-deposited metal compounds immobilized on porous substrates. The substrate is a porous substrate having an average pore size of at least about 8 Ã… and a surface area of ... | 12/03/2002 |
| 6028027 | Method of producing selective-dehydrogenation catalysts, and catalysts produced in this way Catalysts comprising iron and potassium and, if desired, further elements, which catalysts are suitable for dehydrogenating hydrocarbons to give the corresponding olefinically unsaturated hydrocarbons, are prepared by calcining a finely divided dry or aqu... | 02/22/2000 |
| 5994606 | Method for dehydrogenation of hydrocarbon A method for dehydrogenation of a hydrocarbon, which comprises selectively oxidizing hydrogen in a gas mixture which is obtained by subjecting a feed hydrocarbon to a dehydrogenation reaction in the presence of a dehydrogenation catalyst and which compris... | 11/30/1999 |
| 5712313 | Process for carrying out chemical equilibrium reactions A process for carrying out a chemical equilibrium reaction is disclosed in which, in a first stage, one or more reactants are contacted with a fixed arrangement of a catalyst under conditions such that the reactants and the products of the reaction are ga... | 01/27/1998 |
| 5689029 | Process for the dehydrogenation of paraffinic hydrocarbons An improved process for the catalytic dehydrogenation of paraffinic hydrocarbons is disclosed. Feed paraffinic hydrocarbons are dehydrogenated by means of contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst in a first dehydrogenati... | 11/18/1997 |
| 5639929 | Oxidative dehydrogenation process A process for the oxidative dehydrogenation of hydrocarbons is disclosed in which C2 -C6 alkanes are contacted with an oxygen containing gas in a fluidized catalyst bed of platinum, rhodium, nickel or platinum-gold supported on ... | 06/17/1997 |
| 5530171 | Process for the catalytic dehydrogenation of alkanes to alkenes with simultaneous combustion of hydrogen There is provided a process for the net catalytic oxidative dehydrogenation of alkanes to produce alkenes. The process involves simultaneous equilibrium dehydrogenation of alkanes to alkenes and combustion of the hydrogen formed to drive the equilibrium d... | 06/25/1996 |
| 5527979 | Process for the catalytic dehydrogenation of alkanes to alkenes with simultaneous combustion of hydrogen There is provided a process for the net catalytic oxidative dehydrogenation of alkanes to produce alkenes. The process involves simultaneous equilibrium dehydrogenation of alkanes to alkenes and combustion of the hydrogen formed to drive the equilibrium d... | 06/18/1996 |
| 5516961 | Dehydrogenation using sulfur tolerant zeolite catalyst A process is provided for catalyst dehydrogenation of light paraffinic hydrocarbons using a catalyst comprising a noble metal and an intermediate pore size zeolite having a specified alkali content. The catalyst is sulfur tolerant, so that the dehydrogena... | 05/14/1996 |
| 5491275 | Process for the dehydrogenation of paraffinic hydrocarbons An improved process for the catalytic dehydrogenation of paraffinic hydrocarbons is disclosed. Feed paraffinic hydrocarbons are dehydrogenated by means of contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst in a first dehydrogenati... | 02/13/1996 |
| 5489724 | High pressure drop endothermic process Aliphatic feeds are converted to olefins and/or aromatics in a multi pressure reactor system. A high pressure first stage reactor generates much or all of the hydrogen needed to reduce catalyst coking in lower pressure downstream reactors. High pressure o... | 02/06/1996 |
| 5430219 | Integrated process for producing olefins from methane-containing gas mixtures Disclosed is an integrated process for producing olefins by starting from methane containing gas mixture, which process essentially comprises the following steps: converting methane into higher hydrocarbons by oxidative coupling carried out in the presenc... | 07/04/1995 |
| 5406011 | Process for the dehydrogenation of paraffinic hydrocarbons An improved process for the catalytic dehydrogenation of paraffinic hydrocarbons is disclosed. Feed paraffinic hydrocarbons are dehydrogenated by means of contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst in a first dehydrogenati... | 04/11/1995 |
| 5365006 | Process and apparatus for dehydrogenating alkanes An alkane-containing feedstream is passed through one or more tubes, which may contain alkane-dehydrogenation catalyst, immersed in a bed of fluidized particles. The bed is at an elevated temperature which maintains the temperature within the tube(s) at a... | 11/15/1994 |
| 5336829 | Continuous process for the dehydrogenation of paraffinic to olefinic hydrocarbons A continuous process for the dehydrogenation of paraffinic and olefinic hydrocarbons in the presence of a catalyst comprises circulating a charge containing said paraffinic hydrocarbons through at least two reactions zones of the moving bed type which are... | 08/09/1994 |
| 5321192 | Dehydrogenation process The activity, selectivity and yield of a dehydrogenation process used to produce olefins from normal paraffin hydrocarbons having 2 to 5 carbon atoms per molecule is improved by the introduction of an essentially constant level of water into the inlet of ... | 06/14/1994 |
| 5315056 | Catalyst regeneration in a dehydrogenation process In a dehydrogenation process wherein catalyst is regenerated off-stream by use of heated air, at least two reactors are in the regeneration cycle, with regeneration air being heated to regeneration catalyst temperature for introduction into the first reac... | 05/24/1994 |
