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| Number | Title | Issue Date |
| 7402719 | Catalytic oxidative dehydrogenation, and microchannel reactors for catalytic oxidative dehydrogenation The invention provides methods of oxidative dehydrogenation (ODH). Conducting ODH in microchannels has unexpectedly been found to yield superior performance when compared to the same reactions at the same conditions in larger reactors. ODH methods employing a Mo—V... | 07/22/2008 |
| 7319179 | Method for the oxidative dehydrogenation of ethane The invention relates to a method for the oxidative dehydrogenation of ethane. The inventive method is characterized in that it consists of bringing the ethane into contact with the catalyst containing Mo, Te, V, Nb and at least a fifth element A which is selected f... | 01/15/2008 |
| 7291761 | Partial dehydrogenation method using continuous heterogeneous catalysis A process for the continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon in the gas phase and in the presence of molecular oxygen, in which part of the product gas is recirculated to the reaction zone, and a reactor for carrying out such a pro... | 11/06/2007 |
| 7279611 | 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 r... | 10/09/2007 |
| 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 |
| 7223897 | Process for the production of olefins A process for the production of an olefin from a hydrocarbon by autothermal cracking, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a catalyst, wherein the stoichiometric ratio of hydrocarbon to oxygen ... | 05/29/2007 |
| 7164053 | Process for the production of olefins Process for the production of an olefin from a hydrocarbon, which process comprises contacting the hydrocarbon and a molecular oxygen-containing gas with a catalyst under auto-thermal conditions sufficient to produce the olefin. The catalyst comprises a component (a... | 01/16/2007 |
| 7094942 | Carbon dioxide promoted dehydrogenation process for olefins A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting the alkane with a chromium-based dehydrogenation catalyst in the presence of carbon dioxide at a temperature of from about 400° C. to about 700° C., a pressure ... | 08/22/2006 |
| 7091392 | Dehydrogenation process for olefins A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting an alkane with a chromium-based dehydrogenation catalyst in the presence of molecular oxygen at a temperature of from about 400° C. to about 700° C., a pressure... | 08/15/2006 |
| 7071371 | Gel catalysts and methods for their use in catalytic dehydrogenation processes A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes. ... | 07/04/2006 |
| 7045671 | Process for catalytic dehydrogenation and catalyst therefor A process for catalytic dehydrogenation of a dehydrogenatable hydrocarbon process stream to the corresponding olefin or olefins, the process comprising contacting the dehydrogenatable hydrocarbon process stream under dehydrogenation conditions with a mesoporous zeot... | 05/16/2006 |
| 7041866 | Solid-acid isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component co... | 05/09/2006 |
| 6977322 | Isomerization catalyst and processes A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component ... | 12/20/2005 |
| 6891075 | Processes for oxidative dehyrogenation Processes for oxidative dehydrogenation of alkane to one or more olefins, exemplified by ethane to ethylene, are disclosed using novel catalysts. The catalysts comprise a mixture of metal oxides having as an important component nickel oxide (NiO), which give high co... | 05/10/2005 |
| 6831204 | MCrAlY supported catalysts for oxidative dehydrogenation of alkanes A new family of oxidative dehydrogenation catalysts having MCrAlY supports can be used in the production of olefins. Olefins are produced by heating a feed stream comprising at least an alkane and an oxidant to a temperature between 25° C. and 800° C.; contacting ... | 12/14/2004 |
| 6781022 | Polyvalent bifunctional catalyst and the process of realization of such a catalyst The objective of the present invention is a polyvalent bifunctional catalyst and the process of its realization. A catalyst characterized by the fact that it contains, over a TiO2 support, an oxide or a mixture of metallic oxides of MC2 type ob... | 08/24/2004 |
| 6756517 | Lower alkane oxidative dehydrogenation catalysts and a process for producing olefins Lower alkenes of from 2 to 5 carbon atoms, such as propene, are produced by the vapor phase catalytic oxidative dehydrogenation of lower alkane, such as propane, using a mixed metal oxide catalyst of formula (1) as decribed, containing manganese and at least one add... | 06/29/2004 |
| 6700028 | Advances in dehydrogenation catalysis Provided herein are processes for the dehydrogenation of hydrocarbons using new supported catalysts. A process according to the invention employs new catalysts that possess a unique pore size distribution which provides a favorable balance of selectivity,... | 03/02/2004 |
| 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 |
| 6600082 | Process for dehydrogenating organic compounds in the presence of a supported bimetallic catalyst with a strong interaction between a group VIII metal and tin A process for dehydrogenating organic compounds, in particular paraffins and naphthenes, is carried out in the presence of a supported catalyst comprising a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with th... | 07/29/2003 |
| 6576804 | Method and catalyst for producing olefins, in particular propylenes, by dehydrogenation Olefinically unsaturated hydrocarbons are prepared from corresponding paraffinic hydrocarbons, in particular propylene is prepared from propane, by dehydrogenation over a catalyst comprising an oxide of a transition metal of group IV B of the Periodic Tab... | 06/10/2003 |
| 6555724 | Hydrocarbon dehydrogenation catalyst and process A catalyst and a process employing such catalyst for the dehydrogenation of paraffinic hydrocarbons are disclosed, wherein the catalyst comprises a platinum group metal component, a zinc component and a magnesium component on a support comprising ZSM or b... | 04/29/2003 |
| 6531631 | Oxidation of ethane to acetic acid and ethylene using molybdenum and vanadium based catalysts A process for producing olefins and carboxylic acids from lower alkanes using a mixed metal oxide catalytic system comprising a catalyst having the formula Moa Vb Alc Xd Ye Oz wherein: X is at l... | 03/11/2003 |
| 6521808 | Preparation and use of a catalyst for the oxidative dehydrogenation of lower alkanes The present invention includes a sol-gel supported catalyst for the dehydrogenation of lower alkanes, the catalyst comprising at least one active metal and at least one promoter metal attached to a sol-gel mixed oxide support. The sol-gel mixed oxide supp... | 02/18/2003 |
| 6518476 | Methods for manufacturing olefins from lower alkans by oxidative dehydrogenation The present invention provides methods for manufacturing olefins such as ethylene and propylene from lower alkanes, that is, methane, ethane and/or propane, by oxidative dehydrogenation at elevated pressure. The olefins are selectively recovered from unco... | 02/11/2003 |
| 6441264 | Method for separating benzothiophene compounds from hydrocarbon mixture containing them, and hydrocarbon mixture obtained by said method A method for separating at least a benzothiophene compound from a hydrocarbon mixture is disclosed. The method includes contacting the mixture of a fraction obtained therefrom with a reagent including an acceptor complexing agent π, to obtain a donor-acc... | 08/27/2002 |
| 6437210 | Mazzite supported catalyst A catalyst, method for preparing the catalyst, and method for using the catalyst having improved conversion and/or selectivity in the dehydrogenation of hydrocarbons. The catalyst being prepared by modifying and impregnating a mazzite zeolite. Modificatio... | 08/20/2002 |
| 6362385 | Process for obtaining light olefins by the dehydrogenation of the corresponding paraffins A process for obtaining light olefins by the dehydrogenation of corresponding paraffins, by reacting the paraffins with a catalytic system containing chromium oxide, tin oxide, at least one alkali metal oxide, and an alumina-silica carrier, and then regen... | 03/26/2002 |
| 6326523 | Process for the dehydrogenation of a hydrocarbon feed stock Process for the dehydrogenation of a hydrocarbon feed comprising a step of dehydrogenating the hydrocarbon feed and a step of removing hydrogen being formed by dehydrogenation reactions, wherein the dehydrogenation and hydrogen removal steps are performed... | 12/04/2001 |
| 6239325 | Lower alkane oxidative dehydrogenation catalysts and a process for producing olefins The invention provides process for oxidative dehydrogenation of lower alkanes, by vapor phase oxidative dehydrogenation of C2 -C5 lower alkanes in the presence of a catalyst and molecular oxygen to produce the corresponding olefins, ... | 05/29/2001 |
| 6159358 | Process and apparatus using plate arrangement for reactant heating and preheating A process and apparatus produces reaction products by indirectly preheating and heating reactants by indirect heat exchange. The use of the preheating step simplifies the reaction zone design by eliminating the need for external exchangers and is particul... | 12/12/2000 |
| 6084145 | Dehydrogenation catalyst and dehydrogenation process using said catalyst A dehydrogenation catalyst is produced by a process comprising the steps of: mixing an L-zeolite, chromium(VI) oxide, a binder, and an acid to form a mixture; and calcining the mixture at a temperature of about 200-800° C. A paraffin having 2-7 carbon at... | 07/04/2000 |
| 6031143 | Process for the production of styrene Process for the production of styrene which comprises: a) feeding to an alkylation unit a stream of benzene and a stream of recycled product containing ethylene; b) mixing the stream at the outlet of the alkylation unit, containing ethylbenzene, with a stream ... | 02/29/2000 |
| 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 |
| 5962757 | Dehydrogenation catalyst and process Dehydrogenation catalysts are prepared by a predoping process comprising, mixing iron oxide materials with a predopant to form a blend of iron oxide and predopant and heating the blend to the predoping conditions and thereafter forming a catalyst. The cat... | 10/05/1999 |
| 5895829 | Preparation of olefinically unsaturated compounds, in particular sytrene, by catalytic oxidation In a process for preparing olefinically unsaturated compounds such as styrene by oxidative dehydrogenation of corresponding hydrocarbons using a previously oxidized oxygen transferer acting as catalyst in the absence of molecular oxygen and reoxidation of... | 04/20/1999 |
| 5866737 | Oxidation and oxydehydrogenation of hydrocarbons in the fluidized bed A process for the oxidation and oxidative dehydrogenation of hydrocarbons, in particular ethylbenzene, to form corresponding oxidized or olefinically unsaturated compounds, in particular styrene, over an oxygen-conferring, oxygen-regenerable catalyst invo... | 02/02/1999 |
| 5672801 | Catalyst regeneration process and use of the catalyst in hydrocarbon conversion processes The present invention concerns a regeneration process for a catalyst containing at least one metallic element selected from the group formed by platinum, palladium, ruthenium, rhodium, osmium, iridium and nickel, preferably platinum, on a refractory oxide... | 09/30/1997 |
| 5597944 | Dehydrogenation of N-paraffin to N-olefin employing manganese oxide octahedral molecular sieve as catalyst The dehydrogenation of n-parrofins to n-olefins is catalyzed by novel synthetic manganese oxide octahedral molecular sieves such as OMS-1 and OMS-2.... | 01/28/1997 |
| 5585530 | Transhydrogenation A process for the production of olefins comprises dehydrogenating at least one hydrogen-donor hydrocarbon that is essentially free from olefinic unsaturation, e.g. a paraffin, in the presence of a dehydrogenation catalyst and in the presence of at least o... | 12/17/1996 |
