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| Number | Title | Issue Date |
| 4466947 | Denitration catalyst and denitrating method A denitration catalyst comprising at least three metal components, (A) titanium, (B) tungsten and/or magnesium, and (C) vanadium, the titanium and tungsten being contained as oxides and the magnesium and vanadium being contained in the form of an oxide or... | 08/21/1984 |
| 4465788 | Olefin oligomerization with an activated catalyst An olefin oligomerization catalyst containing nickel sulfate on a porous support, activated by calcining in an oxidizing atmosphere, followed by inert gas treatment at a lower but elevated temperature, is useful for oligomerizing propylene and butenes.... | 08/14/1984 |
| 4427576 | Catalyst for oxidation of hydrogen sulfide and/or organosulfur compounds to SO2 and process for preparing the catalyst The hydrogen sulfide, and/or organosulfur compounds, and/or elemental sulfur contained in gaseous effluents is/are catalytically oxidized to sulfur dioxide, employing an improved oxidation catalyst comprising (i) titanium dioxide, or admixture of titanium... | 01/24/1984 |
| 4422958 | Catalyst for desulfurization of industrial waste gases and process for preparing the catalyst Industrial waste gases containing objectionable/polluting compounds of sulfur, e.g., H2 S, SO2 and such organo-sulfur derivatives as COS, CS2 and mercaptans, are catalytically desulfurized, e.g., by Claus process, employin... | 12/27/1983 |
| 4418004 | Catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated derivatives This invention relates to improved catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated derivatives by hydrofluoric acid. The catalysts are characterized by an active carbon support having a total specific surface area g... | 11/29/1983 |
| 4418005 | Pressure activation of magnesium oxide catalysts A titanium oxide/magnesium sulfate/magnesium oxide catalyst which is an ortho-selective methylation catalyst can be made to exhibit higher conversion and activity index for phenol methylation by the application of pressure. The pressure can be applied thr... | 11/29/1983 |
| 4406821 | Etherification catalyst An etherification catalyst comprising a sulfated composite of one or more transition metal oxides on alumina. The catalysts of this invention may be used to etherify phenols. Preferred metal oxides are oxides of tungsten, hafnium, and mixtures thereof.... | 09/27/1983 |
| 4399058 | Impregnating solution for hydrogenation catalyst manufacture and production thereof An aqueous, alkaline impregnating solution for the one-step impregnation of nickel and molybdenum onto a catalyst support is provided by admixing nickel sulfate, preferably an ammoniacal solution of nickel sulfate and an ammoniacal solution of Mo+VI | 08/16/1983 |
| 4362651 | High porosity catalysts The porosity of heterogeneous type catalysts is increased by incorporating during the preparation a short fibrous type material commonly referred to as a whisker. This type material is highly effective in increasing the volume and diameter of the pores in... | 12/07/1982 |
| 4359408 | Activated magnesium oxide catalysts Catalysts comprising magnesium oxide, sulfate ions and amorphous metal ions including titanium are improved in activity by undergoing a wet grinding step. The level of water in the wet grinding step is critical to achieve full activity. The water may subs... | 11/16/1982 |
| 4358398 | Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram ... | 11/09/1982 |
| 4347384 | Production of mercaptans Trifluoromethylsulfonic acid has been found to be an extremely useful catalyst for the manufacture of mercaptans from olefins or viscous polyolefins and hydrogen sulfide. Also a novel process for the preparation of mercaptans is disclosed which proven com... | 08/31/1982 |
| 4324700 | Process for preparing platinum group metal catalysts Process for preparing a catalyst which comprises precipitating a catalytic metal hydroxide or hydrated oxide from a solution of a water soluble salt of the metal; collecting the precipitate and redispersing it in water; passing sulphur dioxide gas through... | 04/13/1982 |
| 4322397 | Process for changing the morphology of metal sulfates Novel form of metal sulphate produced by alternate dehydration and rehydration, e.g., by cycling prismatic metal sulphate between 0° C. and 70° C., 20 minutes at each temperature, for 200 or more cycles, until a low-density powder is formed having a cor... | 03/30/1982 |
| 4318801 | Supported nickel-molybdenum catalyst, preparation thereof, and hydrodesulfurization of hydrocarbon fractions using same A nickel-molybdenum catalyst composite is formed by a process which consists essentially of contacting a refractory inorganic oxide support with an aqueous, alkaline impregnating solution consisting essentially of NH+4, Ni++ | 03/09/1982 |
| 4282115 | Catalyst for selectively reducing nitrogen oxides from oxygen-containing exhaust gases A catalyst for the selective catalytic reduction of nitrogen oxides by the use of ammonia as a reducing agent composed of a catalytically active constituent on a carrier having a honeycomb or parallel plate structure, the carrier being prepared from a slu... | 08/04/1981 |
| 4269735 | Magnesium oxide catalyst Amorphorus titanium, uranium, chromium ions and zirconium together with sulfate ions are effective promoters for magnesium oxide catalysts. These catalysts are active for the ortho methylation of phenols in the vapor phase to yield 2,6-xylenol.... | 05/26/1981 |
| 4257918 | Catalyst mixture for the catalytic reduction of nitrogen oxides in gaseous mixtures A physical mixture of a first and second catalyst. The first catalyst comprises copper or a copper compound, preferably copper sulfate supported on a porous carrier material. The second catalyst is a combination of metals or compounds thereof, preferably ... | 03/24/1981 |
| 4225462 | Catalyst for reducing nitrogen oxides and process for producing the same Disclosed is a water resistant catalyst for reducing nitrogen oxides with ammonia, which catalyst comprises barium sulfate and vanadium(IV)oxide sulfate which has peaks at 940 cm-1 and 510 cm-1 in an infrared absorption spectrum.... | 09/30/1980 |
| 4224292 | Catalytic reduction of nitrogen oxides Nitrogen oxides in exhaust gases are catalytically reduced in the presence of oxygen and ammonia at 200° to 600° C. over a catalyst of at least one catalyst component selected from the group consisting of compounds of metals of Groups 1B, 5A, 6A, 7A and... | 09/23/1980 |
| 4213881 | Reforming with multimetallic catalysts A process for desensitizing a hypersensitive, high activity reforming catalyst for suppression of hydrogenolysis which is particularly acute during the early portion of the period that the catalyst is placed on stream, i.e., at the startup of a reactor. T... | 07/22/1980 |
| 4206081 | Process for producing highly active denitrating catalysts A highly active denitrating catalyst is produced by converting the surface layer of steel material to an aluminum alloy, treating the resulting steel material with an aluminum dissolving solution to dissolve out the aluminum and to render the surface laye... | 06/03/1980 |
| 4193894 | Catalyst for oxidation of sulfur dioxide A catalytic material for oxidation of sulfur dioxide to sulfur trioxide at any temperature above 300° C., comprising a catalyst which at reaction conditions is a melt including sulfatized vanadium ions as the active catalytic component and two different ... | 03/18/1980 |
| 4186109 | Catalyst for selectively reducing nitrogen oxides from oxygen-containing exhaust gases A catalyst for selective catalytic reduction of nitrogen oxides by use of ammonia as a reducing agent is prepared by mixing a silicic acid material with a lime material, heating the mixture under pressure to form a slurry of calcium silicate crystals, for... | 01/29/1980 |
| 4176091 | Denitrating catalysts having porous coating and process for producing same A denitrating catalyst having a porous coating is produced by immersing a catalyst base of porous metal in a silica-containing coating bath, drying the catalyst base to form a carrier having a porour silica coating, immersing the carrier in a solution con... | 11/27/1979 |
| 4160744 | Catalyst for reduction of nitrogen oxides and method for manufacture thereof Disclosed is a substance which is obtained by coating the surface of a specific iron-containing substance, through a specific procedure, with a material composed mainly of aluminum sulfate. The substance thus produced is useful as a catalyst for the remov... | 07/10/1979 |
| 4152296 | Process for preparing catalysts for removal of nitrogen oxides A catalyst for removal of nitrogen oxides which shows extremely good catalytic activity and is excellent in durability and is low in the activity of oxidizing SO2 into SO3 be prepared at a low cost by impregnating a titanium oxide ca... | 05/01/1979 |
| 4148758 | Reforming with multimetallic catalysts A process for desensitizing a hypersensitive, high activity reforming catalyst for suppression of hydrogenolysis which is particularly acute during the early portion of the period that the catalyst is placed on stream, i.e., at the start-up of a reactor. ... | 04/10/1979 |
| 4147734 | Process for dealkylating an alkylaromatic hydrocarbon using supported catalyst A novel active alumina which has been treated with sulfate ion, is found to be particularly characterized by increased performance when used as a support for catalyst which may be used in hydrocarbon conversion processes such as steam dealkylation.... | 04/03/1979 |
| 4146581 | Manufacture of higher ketones A process for the manufacture of higher ketones by reacting an aldehyde with a ketone in the presence of hydrogen over a catalyst system which contains, firstly, oxides or salts of the rare earth metals and, secondly, metals of group VIII of the periodic ... | 03/27/1979 |
| 4141858 | Passivating metals on cracking catalysts Metals such as nickel, vanadium and iron contaminating a cracking catalyst are passivated by contacting the cracking catalyst under elevated temperature conditions with antimony selenide, antimony sulfide, antimony sulfate, bismuth selenide, bismuth sulfi... | 02/27/1979 |
| 4119703 | Process for removal of nitrogen oxides from waste gas A process for the removal of nitrogen oxides from a waste gas containing said nitrogen oxides in conjunction with sulfur oxides is disclosed, which process comprises allowing said waste gas to come into contact with ammonia as the reducing agent at temper... | 10/10/1978 |
| 4119568 | Solid supported catalysts for catalytic reduction of nitrogen oxides in waste gases Solid supported catalysts for catalytic reduction of nitrogen oxide in waste gases utilizing ammonia as the reducing agent, the catalyst comprising at least one metallic oxide, sulfate or phosphate of a first transition metal supported on an alumina or si... | 10/10/1978 |
| 4112006 | Process for nitrating toluene Toluene is nitrated with nitric acid in the gaseous phase under reduced pressure and at temperatures from about 80° - 180° C, while using an acidic inorganic catalyst consisting of a carrier substance based on SiO2 and/or Al2 O | 09/05/1978 |
| 4107272 | Process for removing nitrogen oxides using ammonia as a reductant and sulfated metallic catalysts Nitrogen oxides are removed from flue gas evolving from stationary sources and containing the nitrogen oxides through reduction of nitrogen oxides to nitrogen by passing the flue gas over a catalyst of metal compounds containing oxysulfur compounds in the... | 08/15/1978 |
| 4105745 | Catalyst and process for reducing nitrogen oxides A catalyst comprising an iron-chromium-oxygen type catalyst base and 0.1 through 20% of aluminum sulfate based on the weight of the above-mentioned catalyst base, is useful for reducing nitrogen oxides with ammonia at a temperature of 150° C or higher, t... | 08/08/1978 |
| 4092239 | Hydrodesulfurization of oil utilizing a catalyst of rare earth metal, non-rare earth metal and alumina support A catalyst is provided which comprises a hydrogenation component composited with a support. The hydrogenation component comprises a rare earth metal component and a transition metal component. Preferred catalysts are bimetallic catalysts consisting of cob... | 05/30/1978 |
| 4076649 | Production of N-alkylated amines and catalyst therefor An improved supported thorium sulfate catalyst is prepared by converting a thorium compound impregnated in the carrier to thorium sulfate in situ. The improved catalyst is used in the production of N-alkylated amines, by contacting an alkanol with a prima... | 02/28/1978 |
| 4048086 | Cobaltic accelerators with group II metal oxides and hydroxides This invention relates to an accelerator composition particularly adapted for providing extended shelf life to sheet and bulk molding compound while providing for accelerated cure rates at molding temperatures. The accelerator composition comprises in com... | 09/13/1977 |
| 4043934 | Catalyst and method for oxidizing reducing gases A reducing gas, such as, carbon monoxide (CO) or unsaturated hydrocarbons, is oxidized by contacting a mixture of the gas and oxygen with a catalyst or reagent which includes palladium sulfate and ammonium molybdate adsorbed on silica gel. The reducing ga... | 08/23/1977 |
