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| Number | Title | Issue Date |
| 7576232 | In situ modification of molybdenum-based catalysts A process for the conversion of a hydrocarbon selected from the group consisting of propylene, isobutylene, propane, isobutane or mixtures thereof, to acrylonitrile, methacrylonitrile, or mixtures thereof, the process comprising the step of reacting in the vapor pha... | 08/18/2009 |
| 7365041 | Method for producing ammoxidation catalyst An ammoxidation catalyst comprising a molybdenum (component (1)), bismuth (component (2)), at least one element selected from the group consisting of nickel, cobalt, zinc, magnesium, manganese and copper (component (3)) and at least one element selected from the gro... | 04/29/2008 |
| 7348291 | Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula AaK... | 03/25/2008 |
| 7338917 | Purification catalyst for exhaust gas A purification catalyst for exhaust gas enhances the activity for each precious metal by effectively utilizing the precious metal without incurring a high production cost, thereby improving endurance. The purification catalyst for exhaust gas comprises a composite o... | 03/04/2008 |
| 7304199 | Solid acid catalyst and method of using same A catalyst composition includes an oxygen compound of an element selected from Group IVB or Group IVA of the Periodic Table of the Elements; an oxygen compound of an element selected from Group VIB or Group VIA of the Periodic Table of the Elements; and at least abo... | 12/04/2007 |
| 7304180 | Process for producing metal oxide catalyst The invention relates to a process for producing a metal oxide catalyst capable of producing acrylic acid, acrylonitrile or the like in one stage by catalytic oxidation reaction of propane in a high yield. The invention is characterized by using one obtained ... | 12/04/2007 |
| 7229946 | Catalyst composition for the selective conversion of alkanes to unsaturated carboxylic acids, method of making and method of using thereof A catalyst composition having the formula: Mo1VaSbbNbcMdOx wherein M is gallium, bismuth, silver or gold, a is 0.01 to 1, b is 0.01 to 1, c is 0.01 to 1, d is 0.01 to 1 and x is de... | 06/12/2007 |
| 7109144 | Oxide catalyst for oxidation or ammoxidation Disclosed is an oxide catalyst for use in catalytic oxidation or ammoxidation of propane or isobutane in the gaseous phase, which comprises a composition represented by the Mo1VaSbbNbcZdOn (wherein: Z... | 09/19/2006 |
| 7071140 | Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potas... | 07/04/2006 |
| 7005403 | Catalyst comprising a support body and a catalytically active oxide material applied to the surface of the substrate A coated catalyst whose coating of active composition is a multimetal oxide comprising the elements Mo, V and Te and/or Sb can be used for the gas-phase catalytic oxidation of propane to acrylic acid. ... | 02/28/2006 |
| 6984750 | PVD supported mixed metal oxide catalyst A supported catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alke... | 01/10/2006 |
| 6965046 | Catalyst for the manufacture of acrylonitrile A catalyst composition comprising a complex of catalytic oxides of iron, bismuth, molybdenum, cobalt, cerium, antimony, at least one of nickel or magnesium, and at least one of lithium, sodium, potassium, rubidium, or thallium, and characterized by the following emp... | 11/15/2005 |
| 6924387 | Solid catalyst with core-shell catalytic phase and a method of preparation thereof The present invention relates to a sold catalyst for manufacturing of a nitrile compound and a method of preparation thereof. More particularly, this invention relates to the solid catalyst expressed by the following formula (1): BiaAaBb | 08/02/2005 |
| 6919472 | Catalyst compositions for the selective conversion of alkanes to unsaturated carboxylic acids, methods of making and methods of using thereof A catalyst composition for the selective conversion of an alkane to an unsaturated carboxylic acid having the general formula: MoVaNbbAgcMdOx wherein optional element M may be one or more sel... | 07/19/2005 |
| 6919478 | Reaction tube, process for producing catalyst and process for producing unsaturated aldehyde and unsaturated carboxylic acid In producing a catalyst used for synthesis of an unsaturated aldehyde and an unsaturated carboxylic acid by a gas-phase catalytic oxidation, there is used a step of packing an additive-containing catalyst precursor of the catalyst into a tubular reactor, passing a g... | 07/19/2005 |
| 6479691 | Catalyst for producing unsaturated nitrile A catalyst composition represented by the following empirical formula which is useful in production of unsaturated nitrites by ammoxidation: Mo10 Bia Feb Sbc Nid Cre Ff Gg ... | 11/12/2002 |
| 6171571 | Crystalline multinary metal oxide compositions, process for preparing and processes for using the composition A new family of crystalline metal oxide compositions have been synthesized. These compositions are described by the empirical formula: An NbMx M'y M"m Op where A is an alkali metal cation, ammonium ion and mixt... | 01/09/2001 |
| 6143916 | Ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation An ammoxidation catalyst comprising a compound oxide of Mo, V, Nb, and at least one element selected from the group consisting of Te and Sb, wherein the compound catalyst exhibits an X-ray diffraction pattern satisfying the following relationship: 0.40ࣘ... | 11/07/2000 |
| 6124233 | Highly active and selective catalysts for the production of unsaturated nitriles, methods of making and using the same An improved catalyst for the production of unsaturated nitriles from their corresponding olefins, the catalyst having the atomic ratios described by the empirical formula Bia Mob Vc Sbd Nbe Af ... | 09/26/2000 |
| 6087524 | Preparation of vanadium antimonate based catalysts using Sno2 .multidot.xH2 o A method of preparing a catalyst having the elements and the proportions indicated by the following empirical formula: VSbm Aa Dd Ox where A is one or more Ti, Sn, where Sn is always present D is one or more Li, Mg, Ca, S... | 07/11/2000 |
| 6087525 | Highly active and selective catalysts for the production of unsaturated nitriles, methods of making and using the same An improved catalyst for the production of unsaturated nitrites from their corresponding olefins, the catalyst composition having the atomic ratios described by the empirical formula Bia Mob Vc Sbd Nbe | 07/11/2000 |
| 6072070 | Vanadium/antimony/titanium mixed oxide and process of use in vapor phase ammoxidation of an alkane Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO2, are prepared by (a)... | 06/06/2000 |
| 6063728 | Ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation An ammoxidation catalyst comprising a compound oxide of Mo, V, Nb, and at least one element selected from the group consisting of Te and Sb, wherein the compound catalyst exhibits an X-ray diffraction pattern satisfying the following relationship: 0.40ࣘ... | 05/16/2000 |
| 6057471 | Ammoxidation method in fluidized-bed reactor An ammoxidation method in a fluidized-bed reactor, in which, when a starting material to be ammoxidized is ammoxidized by means of vapor-phase catalytic fluidized-bed reaction, the reaction is carried out in a fluidized-bed reactor to which an oxygen-cont... | 05/02/2000 |
| 6043185 | Gallium promoted molybdenum vanadium-antimony-oxide based catalyst for selective paraffin ammoxidation A catalyst useful in the manufacture of acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction... | 03/28/2000 |
| 6036880 | Niobium-containing aqueous solution for use in producing niobium-containing oxide-catalyst Disclosed is a niobium(Nb)-containing aqueous solution for use in producing a Nb-containing oxide catalyst, wherein the oxide catalyst comprises an oxide of a plurality of active component elements including Nb and is for use in a catalytic oxidation or a... | 03/14/2000 |
| 6020533 | Hydrocarbon conversion processes using crystalline manganese phosphate compositions Hydrocarbon conversion processes using a new family of crystalline manganese phosphate compositions is disclosed. These compositions have an extended network; which network can be a one-, two-, or three-dimensional network. The composition has an empirica... | 02/01/2000 |
| 5907052 | Process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation A process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation, which comprises reacting propane or isobutane with ammonia and molecular oxygen in the gaseous phase in a fluidized-bed reactor containing a catalyst com... | 05/25/1999 |
| 5686373 | Polymetal oxide materials Polymetal oxide materials of the general formula I A!p B!q (I), where ##STR1## X1 is W, Nb, Ta, Cr and/or Ce, X2 is Cu, Ni, Co, Fe, Mn and/or Zn, X3 is Sb an... | 11/11/1997 |
| 5576469 | Paraffin ammoxidation using vanadium antimony oxide based catalysts with halide promoters The process for the ammoxidation of a C3 to C5 paraffinic hydrocarbon to its corresponding ,ଲ-unsaturated hydrocarbon comprising reacting the C3 to C5 paraffinic hydrocarbon with ammonia and oxygen ... | 11/19/1996 |
| 5466857 | Process for reduction of waste material during manufacture of acrylonitrile A process for the reduction in the amount of waste material generated during the manufacture of acrylonitrile comprising introducing an additional amount of oxygen containing gas, preferably air, in the substantial absence of any oxygenate compounds, into... | 11/14/1995 |
| 5258543 | Method for ammoxidation of olefins Disclosed is a method for ammoxidizing C3 to C5 mono-olefins to ,ଲ-mono-unsaturated acyclic nitriles having 3 to 5 carbon atoms and HCN by introducing such mono-olefins molecular oxygen and ammonia into a reaction zone i... | 11/02/1993 |
| 5256810 | Method for eliminating nitriding during acrylonitrile production An improved process for substantially eliminating, preferably completely eliminating of nitride formation on feed conduits for fluid bed catalyst reactors used in the manufacture of unsaturated nitriles from corresponding olefins, NH3 and oxyge... | 10/26/1993 |
| 4960921 | Multiply promoted MN-SB oxide catalysts Certain novel multiply promoted Mn-Sb oxides are superior catalysts for the ammoxidation of olefins to the corresponding unsaturated nitriles, the selective oxidation of olefins to unsaturated aldehydes and acids, and the oxydehydrogenation of olefins to ... | 10/02/1990 |
| 4801731 | Preparation of acrylonitrile An improved process for the preparation of acrylonitrile by the reaction of propylene, ammonia and oxygen in a fluidized catalyst bed in which the propylene and ammonia are premixed and fed in downwardly streams that are directly aligned with upwardly dir... | 01/31/1989 |
| 4774352 | Process for ammoxidation The activity of a tellurium-free metal oxide catalyst used for ammoxidation of organic compounds at a temperature of from 300° C. to 600° C. is improved in the presence of (a) elemental tellurium or a tellurium compound which is in contact with said cat... | 09/27/1988 |
| 4766232 | Production of unsaturated nitriles using catalysts containing boron, gallium or indium Certain catalysts containing iron and molybdenum plus bismuth or tellurium and nickel, cobalt, manganese, magnesium, zinc, cadmium, calcium or beryllium have been found to give especially large volumes of acrylonitrile or methacrylonitrile in a given time... | 08/23/1988 |
| 4766102 | Silver aluminum borate oxidation catalyst and process for its preparation The present invention relates to a novel silver aluminum borate composition useful as a catalyst for oxidation and/or ammoxidation reactions. More particularly the invention is directed to silver aluminum borate having the general formula (x) Ag2 | 08/23/1988 |
| 4760159 | Method for ammoxidation of paraffins and catalyst therefor Disclosed is a process for the vapor phase ammoxidation of a C3 to C5 paraffin to an ,ଲ-unsaturated nitrile having 3-5 C atoms, using a particulate bismuth-vanadium oxide catalyst containing at least one other specified ... | 07/26/1988 |
| 4757038 | Regeneration of iron-antimony metallic oxide catalysts Iron-antimony metallic oxide catalysts which have become deactivated after being used for the production of aldehydes, acids, nitriles, or dienes through oxidation, ammoxidation, or oxidative dehydrogenation of organic compounds in fluidized-bed reactors ... | 07/12/1988 |
