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| Number | Title | Issue Date |
| 4883782 | Cobalt-molybdenum thin film catalyst A thin film catalyst structure is described for use in hydrodesulphurization of gaseous hydrocarbon mixtures. The catalyst is formed starting with an aluminum substrate having an oxide surface layer and thin films of metallic cobalt and molybdenum are seq... | 11/28/1989 |
| 4882360 | Process for producing alcohols from synthesis gas A process for making alcohols comprising contacting a mixture of hydrogen and carbon monoxide with a catalyst comprising: (1) as a first component, at least one element selected from the group consisting of molybdenum and tungsten in free or combined form; (2)... | 11/21/1989 |
| 4880761 | Crystalline microporous metal sulfide compositions This invention relates to a crystalline composition having a three-dimensional microporous structure of MA2 units where A is sulfur or selenium and having the empirical formula expressed in molar ratios: xR:MA2&#b1;0.2 :zH2 | 11/14/1989 |
| 4870044 | Treated alumina material for fixed hydrofining beds A hydrotreating process comprises contacting a substantially liquid hydrocarbon-containing feed stream, which contains compounds of sulfur and metals (preferably Ni and/or V), in the presence of a fixed catalyst bed comprising (a) at least one layer of im... | 09/26/1989 |
| 4863887 | Additive for the hydroconversion of a heavy hydrocarbon oil There is provided an additive for the hydroconversion of a heavy hydrocarbon oil, which is obtained by suspending a fine powder of a carbonaceous substance and a solution of a heteropolymolybdic acid and/or transition metal salts thereof in a hydrocarbon ... | 09/05/1989 |
| 4857496 | Heavy oil hydroprocessing with Group VI metal slurry catalyst A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds s... | 08/15/1989 |
| 4853359 | Novel transition metal dichalcogenide catalysts A novel flocculated methanation, hydrogenation or hydrodesulfurization catalyst of the form MS2 :Y:Z wherein MS2 is a single layer transition metal dichalcogenide sulfide, Y is a promoter substance and Z is a support substance, is di... | 08/01/1989 |
| 4853357 | Olefin oxidation catalyst system The additional of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferr... | 08/01/1989 |
| 4851381 | Catalyst material for reducing nitrogen oxides in flue gases and method for producing the same A catalyst material for nitrogen oxide reduction in flue gases in the presence of ammonia and a method for producing the same, includes adding vanadium oxide and at least one oxide of the elements from the group consisting of tungsten, phosphorous, sulfur... | 07/25/1989 |
| 4845068 | Catalysts for hydrotreating hydrocarbons and method of activating the same Supported catalysts for hydrotreating hydrocarbons comprise (a) at least one member selected from the group consisting of oxides of metals in Groups IV and VIII of the Periodic Table, and (b) at least one organic compound having a mercapto radical or radi... | 07/04/1989 |
| 4839326 | Promoted molybdenum and tungsten sulfide catalysts, their preparation and use This invention relates to a process for the preparation of promoted molybdenum and tungsten sulfide catalysts, the catalysts prepared by such process, and to the use of such catalysts for hydroprocessing processes, particularly hydrotreating. More particu... | 06/13/1989 |
| 4831060 | Mixed alcohols production from syngas Mixed alcohols are produced from carbon monoxide and hydrogen gases using an easily prepared catalyst/co-catalyst metal catalyst. The catalyst metals are molybdenum, tungsten or rhenium. The co-catalyst metals are cobalt, nickel or iron. The catalyst is p... | 05/16/1989 |
| 4831004 | Impregnated alumina-containing material A composition of matter is prepared by a process comprising the steps of impregnating a alumina-containing support material with a thiosulfate (preferably ammonium thiosulfate), drying the thus impregnated material, impregnating the dried material with a ... | 05/16/1989 |
| 4831002 | Cr-promoted hydrotreating catalysts Self-promoted molybdenum and tungsten sulfide hydrotreating catalysts are prepared by heating one or more water soluble catalyst precursors in a non-oxidizing atmosphere in the presence of sulfur at a temperature of at least about 200° C. The precursors ... | 05/16/1989 |
| 4826797 | Carbon-containing molybdenum and tungsten sulfide catalysts Catalysts comprising a carbon-containing sulfide of molybdenum or tungsten are prepared by contacting, in the presence of sulfur, hydrogen and a hydrocarbon, ammonia and ammonium substituted molybdate, thiomolybdate, tungstate and thiotungstate salts at a... | 05/02/1989 |
| 4824820 | Hydrotreating catalysts comprising a mixture of a sulfide of a promoter metal, amorphous sulfide of trivalent chromium and microcrystalline molybdenum or tungsten sulfide A composition of matter comprising a mixture of (i) a sulfide of at least one promoter metal selected from the group consisting of Ni, Co, Mn, Cu, Zn and mixture thereof and mixtures thereof with Fe, (ii) an amorphous sulfide of trivalent chromium and (ii... | 04/25/1989 |
| 4825013 | Preparation of ethanol and higher alcohols from lower carbon number alcohols A process for forming an alcohol fraction boiling in the range of motor gasoline that is enriched in higher alcohols, comprises contacting a mixture of hydrogen, carbon monoxide and a lower alkanol with a catalyst comprising: (1) a first component compris... | 04/25/1989 |
| 4824821 | Dispersed group VIB metal sulfide catalyst promoted with Group VIII metal A process for the preparation of a dispersed Group VIB metal sulfide catalyst which is promoted with a Group VIII metal for use in hydrocarbon oil hydroprocessing comprising dissolving a Group VIB metal compound, such as molybdenum oxide or tungsten oxide... | 04/25/1989 |
| 4822590 | Forms of transition metal dichalcogenides Novel single layer materials of the form MX2, where MX2 is a layer-type dichalcogenide such as MoS2, TaS2, WS2, or the like, exfoliated by intercalation of an alkali metal, and immersion in water, are... | 04/18/1989 |
| 4820677 | Amorphous, iron promoted Mo and W sulfide hydroprocessing catalysts and process for their preparation Hydrocarbon feeds are upgraded by contacting a feed, at elevated temperature and in the presence of hydrogen, with a catalyst comprising an amorphous sulfide of iron and a metal selected from the group consisting of Mo, W and mixture thereof. The catalyst... | 04/11/1989 |
| 4820676 | Treated alumina material for fixed hydrofining beds and process for its preparation A process for preparing impregnated substantially spherical alumina-containing particles comprises the steps of impregnating specific starting material with (NH4)2 SO4 and then heating the thus impregnated material at abou... | 04/11/1989 |
| 4816603 | Process for the production of methacrolein and methacrylic acid The present invention provides a process for the production of methacrolein and methacrylic acid by the gas phase catalytic oxidation of isobutylene or t-butanol at high temperature using molecular oxygen in the presence of catalyst consisting of molybden... | 03/28/1989 |
| 4814315 | Pretreated alumina containing material and process for its preparation A composition of matter is prepared by a process comprising the steps of impregnating a alumina-containing support material with a thiocyanate compound (preferably ammonium thiocyanate), drying the thus impregnated material, impregnating the dried materia... | 03/21/1989 |
| 4801570 | Process for preparing a supported, promoted molybdenum and/or tungsten sulfide hydroprocessing catalyst This invention relates to the preparation and use of supported, manganese sulfide promoted molybdenum and tungsten sulfide catalysts useful for hydroprocessing processes, particularly hydrotreating. These catalysts are prepared by heating a composite of s... | 01/31/1989 |
| 4795731 | Transition metal sulfide promoted molybdenum or tungsten sulfide catalysts and their uses for hydroprocessing Hydrocarbon feeds are upgraded by contacting a feed, at elevated temperature and in the presence of hydrogen, with a self-promoted catalyst prepared by heating one or more catalyst precursors under oxygen-free conditions in the presence of sulfur at a tem... | 01/03/1989 |
| 4792541 | Hydrotreating catalysts comprising supported, mixed metal sulfide of iron promoted Mo and W and their uses This invention relates to the preparation and use of catalysts useful for hydroprocessing processes, such as hydrotreating, wherein said catalysts are formed by heating, at elevated temperature, in the presence of sulfur and under oxygen-free conditions, ... | 12/20/1988 |
| 4762814 | Hydrotreating catalyst and process for its preparation A catalyst composition comprises (a) alumina, (b) zinc titanate, (c) at least one compound of molybdenum, (d) at least one compound of at least one of nickel and cobalt, and (e) at least one compound containing phosphorus and oxygen. This catalyst composi... | 08/09/1988 |
| 4755496 | Supported transition metal sulfide promoted molybdenum or tungsten sulfide catalysts and their uses for hydroprocessing Hydrocarbon feeds are upgraded by contacting a feed, at elevated temperature and in the presence of hydrogen, with a supported self-promoted catalyst prepared by heating a composite of support material and one or more catalyst precursor salts under oxygen... | 07/05/1988 |
| 4749673 | Hydrotreating catalysts comprising supported mixtures of a sulfide of trivalent chromium and molybdenum or tungsten Supported hydroprocessing catalysts comprising a sulfide of trivalent chromium and Mo, W or mixture thereof are obtained by compositing a preselected quantity of support material with a precursor comprising a mixture of (i) a hydrated oxide of trivalent c... | 06/07/1988 |
| 4748142 | Supported chromium-molybdenum and tungsten sulfide catalysts Supported hydroprocessing catalysts comprising a sulfide of trivalent chromium and molybdenum or tungsten which optionally may contain one or more promoter metals such as Co, Fe, Ni and mixture thereof. These catalysts are obtained by compositing a presel... | 05/31/1988 |
| 4740491 | Process for passivating high activity transition metal sulfide catalysts Catalysts having as their active component sulfides of vanadium, molybdenum and tungsten are contacted with ammonia or with an amine which in aqueous solution has a basic ionization constant greater than that of ammonium hydroxide to suppress deactivation... | 04/26/1988 |
| 4740489 | Method of preparing a hydroconversion sulfided molybdenum catalyst concentrate An improved method of preparing a catalyst from a catalyst precursor concentrate is provided. The catalyst precursor concentrate, which is preferably phosphomolybdic acid, is treated at relatively low pressures in a specified manner.... | 04/26/1988 |
| 4737482 | Catalysts for oxidation of olefins to ketones An improved process is provided for forming ketones from the corresponding olefins by vapor phase oxidiation of the olefin in the presence of molecular oxygen and water vapor employing a heterogeneous catalyst comprising rhenium compounds and complexes, o... | 04/12/1988 |
| 4728417 | Hydrofining process for hydrocarbon containing feed streams An additive comprising a mixture of at least one decomposable molybdenum compound selected from the group consisting of molybdenum dithiophosphates and molybdenum dithiocarbamates and at least one decomposable nickel compound selected from the group consi... | 03/01/1988 |
| 4725569 | Organopolysulfide-impregnated catalyst and methods of preparation and use An organopolysulfide-impregnated catalyst composition usable to hydrotreat petroleum and other hydrocarbon feedstock is described. Also disclosed are processes for making and using the composition.... | 02/16/1988 |
| 4725571 | Presulfiding composition for preparing hydrotreating catalyst activity and process for presulfiding a hydrotreating catalyst A presulfiding agent which is a blend of an alkyl sulfide of the formula R1 Sx R2 where R1 and R2 are alkyl groups having from 1 to 12 carbon atoms and x is 1 or 2 and an alkyl polysulfide of the form... | 02/16/1988 |
| 4721696 | Silica-modified alumina and process for its preparation A composition of matter comprising alumina as the major component and silica as a minor component is prepared by a process comprising sequential addition of solutions of aluminum salt and alkali metal aluminate, addition of a solution of alkali metal sili... | 01/26/1988 |
| 4720472 | Hydrocracking catalyst for middle distillates A novel catalyst for recovering middle distillates comprising silica/titanium compound impregnated on an alumina and promoted with nickel and molybdenum.... | 01/19/1988 |
| 4720474 | Olefin oxidation catalyst system The addition of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred... | 01/19/1988 |
| 4719195 | Process for presulfurizing a hydrogen treatment catalyst The invention concerns a process for sulfurizing a catalyst, particularly a refining catalyst comprising a carrier and active metal oxides. In a first step, a sulfur compound mainly consisting of organic polysulfide is introduced into the catalyst mass. A seco... | 01/12/1988 |
