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| Number | Title | Issue Date |
| 7947859 | Process for production of cycloolefin According to the present invention, when cycloolefins are produced by partially hydrogenating a monocyclic aromatic hydrocarbon with hydrogen in the presence of a ruthenium catalyst, water, and a metal sulfate, the decrease in catalytic activity and cycloolefin sele... | 05/24/2011 |
| 7619125 | Hydrogenation promoter, hydrogenation catalyst, and process for producing alkene compound A hydrogenation promoter of the present invention is produced by reacting an alkyne compound or an alkene compound, a palladium compound represented by a general formula Pd(II)XjLk (where L represents a monodentate ligand or a polydendate ligan... | 11/17/2009 |
| 7371908 | Process for catalytic hydrogenation Hydrocarbon streams are hydrogenated catalytically without using a different solvent from the hydrocarbon stream to be hydrogenated, with a basic compound being added to the starting-material stream. The formation of undesired secondary components on the catalyst is... | 05/13/2008 |
| 7368623 | Process for producing 1-octene from butadiene in the presence of titanium catalysts A method is described for the preparation of 1-octene starting from butadiene, wherein in a first step (a) the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on palladium containing one or more tri-substituted mon... | 05/06/2008 |
| 7368622 | Process for the preparation of 1-octene Process in two steps for the preparation of 1-octene starting from butadiene which comprises: a first step (a) in which the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on a palladium complex containing one or m... | 05/06/2008 |
| 7301062 | Process for the selective hydrogenation of alkynes and/or dienes in an olefin-containing hydrocarbon stream A process for the selective hydrogenation of one or more alkyne and/or one or more diene in an olefin-containing hydrocarbon feed includes contacting the hydrocarbon feed with a catalyst under selective hydrogenation conditions, the catalyst including from about 0.0... | 11/27/2007 |
| 7297824 | Ni hydrogenation catalysts, manufacture and use Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous sup... | 11/20/2007 |
| 7253329 | Selective hydrogenation of cyclododecatriene to cyclododecene A process for preparing cyclododecene by selective gas-phase hydrogenation of at least one starting material selected from cyclododecatriene, cyclododecadiene and mixtures thereof, wherein the starting material present in the gas phase is hydrogenated in the presenc... | 08/07/2007 |
| 7220701 | Catalyst and process for selective hydrogenation A selective hydrogenation catalyst composition comprises a rhodium component present in an amount such that the catalyst composition comprises less than 3.0% of rhodium by weight of the total catalyst composition; and an indium component present in an amount such th... | 05/22/2007 |
| 7169736 | Catalyst for hydrogenation of unsaturated hydrocarbons A catalyst is described for hydrogenation of unsaturated hydrocarbons, containing catalytically active amounts of Pd and optionally Ag in a support. The catalyst is characterized by the fact that the support represents a shaped body with a trilobal cross section, th... | 01/30/2007 |
| 7078130 | Metallic mesoporous transition metal oxide molecular sieves, room temperature activation of dinitrogen and ammonia production This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as solid electrolyte devices, e.g., in fuel cells, as sorbents, e.g. for h... | 07/18/2006 |
| 7078577 | DihydroDicyclopentadiene production A method for forming dihydroDicyclopentadiene comprises mixing a source of dicyclopentadiene with at least one solvent and at least one reactive component in the presence of a source of hydrogen and a selective hydrogenation catalyst, the solvent and reactive compon... | 07/18/2006 |
| 7070757 | Method for producing catalysts consisting of metal of the platinum group by means of electroless deposition and the use thereof for the direct synthesis of hydrogen peroxide Catalysts produced by electroless deposition of at least one platinum metal on a nonporous nonmetallic support can be used for the synthesis of hydrogen peroxide from the elements and for the hydrogenation of organic compounds. ... | 07/04/2006 |
| 7045670 | Process for liquid phase hydrogenation A process for the liquid phase selective hydrogenation of alkynes to alkenes with high selectivity to alkenes relative to alkanes, high alkyne conversion, and sustained catalytic activity comprising a reactant comprising an alkyne and a non-hydrocarbon solvent/absor... | 05/16/2006 |
| 7038096 | Hydrocarbon hydrogenation catalyst composition, a process of treating such catalyst composition, and a process of using such catalyst composition A process of treating a catalyst composition containing palladium, an inorganic support, and a catalyst component, such as silver and/or a modifier such as alkali metal fluoride, is provided. The process involves contacting a catalyst composition with a first treati... | 05/02/2006 |
| 6794552 | Hydrocarbon hydrogenation catalyst and process A catalyst composition is provided which can be used for hydrogenating a highly unsaturated hydrocarbon such as an alkyne or a diolefin. The catalyst composition contains palladium, a catalyst component of either silver or an alkali metal compound, or both silver an... | 09/21/2004 |
| 6781023 | Decreasing Br-reactive contaminants in aromatic streams Bromine reactive hydrocarbon contaminants are removed from aromatic streams by first providing an aromatic feedstream having a negligible diene level. The feedstream is contacted with an acid active catalyst composition under conditions sufficient to remove mono-ole... | 08/24/2004 |
| 6693225 | Process for hydrogenating cuts containing hydrocarbons, in particular unsaturated molecules containing at least two double bonds or at least one triple bond Hydrogenation of a liquid cut containing hydrocarbons, in particular unsaturated molecules containing at least two double bonds or at least one triple bond, is described wherein the unsaturated molecules are at least partially hydrogenated to less unsatur... | 02/17/2004 |
| 6676919 | Method for producing platinum metal catalysts The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal complex, at least one reduction agent and at least one comple... | 01/13/2004 |
| 6566457 | Impact modifiers prepared from (partially) hydrogenated butadiene-containing dispersions The invention relates to a process for preparing graft rubbers built up from at least one graft core and from at least one graft shell, comprising a) preparing an aqueous dispersion of at least one elastomeric polymer, b) then, to obtain the at least one graft core... | 05/20/2003 |
| 6455023 | Metallic catalysts for non-neutral liquid media Carbon monolith-supported catalysts with high leach resistance used in catalytic applications involving strong acidic and basic conditions in a pH range of from 0 to 6.5 and from 7.5 to 14, are respectively described. The leach resistance of the catalyst ... | 09/24/2002 |
| 6388149 | Process for reacting an organic compound in the presence of a supported ruthenium catalyst A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of th... | 05/14/2002 |
| 6365790 | Preparation of C10-C30-alkenes by partial hydrogenation of alkynes over fixed-bed supported palladium catalysts Alkenes are prepared by partial hydrogenation of alkynes in the liquid phase at from 20 to 250° C. and hydrogen partial pressures of from 0.3 to 200 bar over fixed-bed supported palladium catalysts which are obtainable by heating the support material in ... | 04/02/2002 |
| 6344593 | Continuous preparation of cyclohexene by partial hydrogenation of benzene Cyclohexene is prepared by partial hydrogenation of benzene with hydrogen in the presence of water and ruthenium catalyst at elevated temperature and superatmospheric pressure by a continuous process in which benzene is introduced in gaseous form and the ... | 02/05/2002 |
| 6333441 | Preparation of cis--olefins A cis-olefin of the formula: R1 --CH.dbd.CH--R2 is prepared by reducing an alkyne of the formula: R1 --C.ident.C--R2 with formic acid in the presence of a palladium catalyst. R1 and R2 are ... | 12/25/2001 |
| 6307116 | Transition metal aerogel-supported catalyst A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, ... | 10/23/2001 |
| 6281397 | Catalytic composition for the hydrogenation of olefinically unsaturated organic compounds A catalytic composition effective in the selective hydrogenation of olefinic double bonds, comprising the reaction product between: (A) at least one complex of a transition metal having the following general formula (I): M(R1)(R2)(R3... | 08/28/2001 |
| 6280608 | Layered catalyst composition and processes for preparing and using the composition This invention relates to a layered catalyst composition, a process for preparing the composition and processes for using the composition. The catalyst composition comprises an inner core such as alpha-alumina, and an outer layer bonded to the inner core ... | 08/28/2001 |
| 6239322 | Selective hydrogenation catalysts containing palladium, also tin and/or lead, and the preparation and use thereof A particulate selective hydrogenation catalyst for hydrogenating unsaturated diolefinic hydrocarbons to -olefinic hydrocarbons at rates which are at least 1.5 times higher than the rate of hydrogenation of -olefinic hydrocarbons to saturated... | 05/29/2001 |
| 6207870 | Catalyst based on a noble group VIII metal containing silicon and possibly boron, and its use in hydrotreating hydrocarbon-containing feeds The invention provides a catalyst including a support, at least one noble metal from group VIII of the periodic table, silicon as a dopant, optionally boron, optionally at least one group VIB element, optionally phosphorous and optionally at least one hal... | 03/27/2001 |
| 6194624 | Hydrogenation of polyenes to monoenes A process for hydrogenating polyenes, especially 1,5,9-cyclododecatriene, to the corresponding monoenes, especially cyclododecene, using homogeneous ruthenium catalysts comprises hydrogenating in the presence of a carboxylic acid, advantageously a C1... | 02/27/2001 |
| 6127588 | Hydrocarbon hydrogenation catalyst and process A supported hydrogenation catalyst composition is disclosed which comprises palladium, an inorganic support such as alumina, and a selectivity enhancer selected from the group consisting of silver, phosphorus, sulfur, and combinations of two or more there... | 10/03/2000 |
| 6099922 | Thermally insulated metal surface protected against metal dusting corrosion The metal surface protected against metal-dusting corrosion has an insulating layer of a gas-permeable, thermally insulating material. The side of the thermal insulating layer that is colder during operation is in direct vicinity of the metal surface, and... | 08/08/2000 |
| 6077983 | Method for reactivating ruthenium catalyst A method for recovering the activity of a ruthenium catalyst which comprises a step of bringing a ruthenium catalyst decreased in activity by its use in hydrogenation of an unsaturated organic compound into contact with oxygen in a liquid phase, and a ste... | 06/20/2000 |
| 6040263 | Catalytic composition based on transition metal complexes, and a process for the hydrogenation of unsaturated compounds A novel non-aqueous catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group consisting of tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexaf... | 03/21/2000 |
| 6027707 | NU-88 zeolite, a process for its preparation and catalytic applications thereof The invention concerns NU-88 zeolite, characterized by: i) a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state: 100 XO2, mY2 O3, pR2/n O where m i... | 02/22/2000 |
| 6002027 | Preparation of 1,2-butylene oxide A process for preparing 1,2-butylene oxide by catalytic hydrogenation of vinyloxirane over a heterogeneous catalyst comprises using a catalyst comprising an element of subgroup I, VII or VIII of the periodic table, or mixtures of a plurality of these elem... | 12/14/1999 |
| 5973218 | Process for producing cycloolefin A process for producing a cycloolefin by partial hydrogenation of a monocyclic aromatic hydrocarbon with hydrogen in the presence of a ruthenium catalyst, water and a metal sulfate, wherein the hydrogenation is conducted while changing the concentration o... | 10/26/1999 |
| 5969202 | Method for producing cycloolefin and cycloalkane under controlled pressure A method for producing a cycloolefin and a cycloalkane, which method comprises: a step of hydrogenating a monocyclic aromatic hydrocarbon under an acidic condition in the presence of a catalyst composition, (i) wherein said catalyst composition is a slurr... | 10/19/1999 |
| 5954941 | Jet engine fuel and process for making same The invention concerns a jet engine fuel having the following characteristics: i) distilling range from 140 to 300° C.; ii) cis-decalin/trans-decalin ratio greater than 0.2; iii) aromatics content less than 22% by volume; iv) sulfur content less than 100 ppm, and ... | 09/21/1999 |
