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| Number | Title | Issue Date |
| 8058473 | Method for producing alpha, beta-unsaturated calboxylic acid Disclosed is a method for producing an α, β-unsaturated carboxylic acid from an olefin or an α, β-unsaturated aldehyde, while suppressing dissolution of a silica carrier, which is a carrier for a silica-supported noble metal-containing catalyst, in a water-conta... | 11/15/2011 |
| 7592483 | Preparation of acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas phase oxidation of propylene A process for preparing acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas oxidation of propylene, in which the starting reaction gas mixture has the following contents: from 6 to 9% by volume of propylene, | 09/22/2009 |
| 7439389 | Process for preparing at least one organic target compound by heterogeneously catalyzed gas phase partial oxidation A process for preparing an organic target compound by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound with molecular oxygen in two oxidation reactor lines operated in parallel and removal of the target compound from the mixture... | 10/21/2008 |
| 7388108 | Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds An oxidation reactor includes a reactor body, a manhole nozzle projecting from the reactor body, and a partition plate separating an inside of the manhole nozzle and an inside of the reactor body from each other. In an oxidation reactor including the reactor body an... | 06/17/2008 |
| 7365228 | Method for producing unsaturated fatty acids Disclosed is a method for producing unsaturated fatty acids from unsaturated aldehydes by means of fixed-bed catalytic partial oxidation in a shell-and-tube reactor, characterized in that the reactor includes a reaction zone for producing unsaturated fatty acids, th... | 04/29/2008 |
| 7361622 | Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alk... | 04/22/2008 |
| 7341974 | Method for preparing a catalyst for partial oxidation of propylene The present invention relates to a method for preparing a catalyst for partial oxidation of propylene, particularly a method for preparing a catalyst for preparing an acrylic acid, using an organic acid such as a citric acid, maleic acid and oxalic acid. The complex... | 03/11/2008 |
| 7332625 | Process for the production of acrylic acid from propane The invention concerns a method for producing acrylic acid from propane, which consists in passing a gas mixture including propane, water, vapor, and optionally an inert gas and/or molecular oxygen, on a catalyst of formula (I): Mo1VaSbb | 02/19/2008 |
| 7326802 | Preparation of at least one partial oxidation and/or ammoxidation product of propylene In a process for preparing at least one partial oxidation and/or ammoxidation product of propylene, the propylene is obtained from crude propane by dehydrogenating and subjected in the presence of unconverted propane as a constituent of a gas mixture 2 which compris... | 02/05/2008 |
| 7304176 | Process for producing easily polymerizable substance It is an object of the present invention to provide a process for producing easily polymerizable substance, which can realize stable operation of a purification system, and can stably maintain a production amount by avoiding production stoppage, upon production of a... | 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 |
| 7294734 | Process for converting a hydrocarbon to an oxygenate or a nitrile This invention relates to a process for converting a hydrocarbon reactant to a product comprising an oxygenate or a nitrile, the process comprising: (A) flowing a reactant composition comprising the hydrocarbon reactant, and oxygen or a source of oxygen, and optiona... | 11/13/2007 |
| 7285679 | Oxidation of alkanes Alkanes are oxidised to oxygenates such as carboxylic acids with molecular oxygen employing a two component catalyst system which uses a liganded heavy metal compound and a mixed metal oxide. ... | 10/23/2007 |
| 7279442 | Process for producing catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid A process for producing a catalyst which has a high mechanical strength and is capable of producing an unsaturated aldehyde and an unsaturated carboxylic acid constantly over a long period of time and in good yield; and, a method for producing an unsaturated aldehyd... | 10/09/2007 |
| 7265250 | Method of producing unsaturated aldehyde and/or unsaturated fatty acid Disclosed is a method for producing unsaturated aldehydes or unsaturated fatty acids from at least one compound selected from the group consisting of propylene, propane, (meth)acrolein, isobutylene, t-butyl alcohol, methyl-t-butyl ether and o-xylene by means of fixe... | 09/04/2007 |
| 7262148 | Catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid, and process for its production A catalyst for producing from an olefin the corresponding unsaturated aldehyde and unsaturated carboxylic acid in good yield, and a process for its production, are presented. It is a composite oxide catalyst containing at least molybdenum, bismuth and iron, t... | 08/28/2007 |
| 7253311 | Method for the production of acrylic acid by heterogeneously-catalysed gas-phase oxidation Acrylic acid is prepared from propene by means of gas-phase oxidation by a process in which a starting gas mixture which contains propene and steam and whose molar propene/steam ratio is ≧1 and whose propane content is ≦5% is passed at elevated temperatures thro... | 08/07/2007 |
| 7232788 | Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount... | 06/19/2007 |
| 7229945 | Process of making mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins The present invention is for a process for making a catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, said catalyst containing oxides of molybdenum, bismuth, iron, cesium, tungst... | 06/12/2007 |
| 7208636 | Preparation of acrolein by heterogeneously catalyzed partial gas phase oxidation of propene Acrolein is prepared by a process of heterogeneous catalyzed partial gas phase oxidation, by passing a starting reaction gas mixture which comprises propene, molecular oxygen and at least one inert gas, in which the molecular oxygen to propene (O2:C3... | 04/24/2007 |
| 7179366 | Catalyst based on a group VI metal and a group VIII metal at least partially present in the form of heteropolyanions in the oxide precursor A catalyst contains at least one group VIII element and at least molybdenum and/or tungsten, said elements being present at least in part in the catalyst in the dry state in the form of at least one heteropolyanion with formula MxAB6O24 | 02/20/2007 |
| 7132384 | Process for producing composite oxide catalyst A process for producing a composite oxide catalyst to be used for gas phase oxidation of an olefin or unsaturated aldehyde with molecular oxygen to produce the corresponding unsaturated aldehyde and/or unsaturated carboxylic acid, which has a uniform constant high p... | 11/07/2006 |
| 7122707 | Method for producing an annular shell catalyst and use thereof for producing acrolein Coated catalysts which are suitable for the gas-phase catalytic oxidation of propene to acrolein are prepared by a process in which rings are used as supports and water is used as a binder. ... | 10/17/2006 |
| 7109372 | Method for production of acrylic acid A method is disclosed which produces acrylic acid in a high yield as maintaining the conditions for purifying acrylic acid in constant ranges and preventing the acrylic acid from polymerization. By using single a single reactor, propylene concentration adjusting in ... | 09/19/2006 |
| 7091377 | Multimetal oxide materials A multimetal oxide material contains the elements Mo, V and Te and/or Sb and at least one of the elements Nb, Ti, W, Ta and Ce and promoters and has a specific X-ray diffraction pattern. Moreover, such a multimetal oxide material is used as a catalyst for heterogene... | 08/15/2006 |
| 7078563 | Oxidation process for the production of alkenes and carboxylic acids A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises contacting in an oxidation reaction zone, said alkane, molecular oxygen-containing gas, and the corresponding alken... | 07/18/2006 |
| 7045657 | Catalytic gas phase oxidation process The object of the present invention is to provide a process in which, when the unsaturated carboxylic acid is produced, or when the unsaturated aldehyde and/or the unsaturated carboxylic acid are produced by carrying out the catalytic gas phase oxidation reaction by... | 05/16/2006 |
| 7038082 | Preparation of a multimetal oxide material A process for preparing a multimetal oxide material which contains the elements Mo, V and Te and/or Sb and at least one of the elements Nb, Ti, W, Ta and Ce and if desired promoters and has a specific X-ray diffraction pattern, in which process the last process step... | 05/02/2006 |
| RE39074 | Process for the selective preparation of acetic acid using a molybdenum and palladium based catalytic oxide The present invention relates to a process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature, which comprises bringing the gaseous feed into contact with a catalyst co... | 04/18/2006 |
| 7012039 | Oxide catalyst composition An oxide catalyst composition for use in producing methacrolein or a mixture of methacrolein and methacrylic acid, wherein the oxide catalyst composition is represented by the formula (Mo+W)l2BiaAbBcFedXe | 03/14/2006 |
| 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 |
| 6998504 | Method for the catalytic gas phase oxidation of propene into acrylic acid A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with a high propene loading, in a first reaction stage, over a first fixed-bed catalyst which is housed in two successive reaction zon... | 02/14/2006 |
| 6960684 | Production process for unsaturated aldehyde The present invention provides a process in which, when an unsaturated aldehyde and/or an unsaturated carboxylic acid are produced by carrying out a catalytic gas phase oxidation reaction by using a fixed-bed multitubular reactor which is packed with a molybdenum-co... | 11/01/2005 |
| 6946422 | Preparation of mixed metal oxide catalysts for catalytic oxidation of olefins to unsaturated aldehydes A process for making a catalyst containing oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals, such as tungsten, cobalt, nickel, antimony, magnesium, zinc, phosphorus, potassium, rubidium, thallium, manganese, barium, chromium, boron, sulfur, ... | 09/20/2005 |
| 6946574 | Method for preparing carboxylic acids by palladium carbonylation The present invention relates to a process for the preparation of β- or γ-unsaturated or saturated carboxylic acids. It relates more particularly to the hydroxycarbonylation of an organic compound comprising a conjugated unsaturation, such as butadiene, by ... | 09/20/2005 |
| 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 |
| 6911556 | Processes for the preparation of olefins, unsaturated carboxylic acids and unsaturated nitriles from alkanes Improved processes for the preparation of olefins, unsaturated carboxylic acids and unsaturated nitriles involve the use of dehydrogenation catalysts suitable for the conversion of alkanes to alkenes and catalysts suitable for the conversion of alkanes and/or alkene... | 06/28/2005 |
| 6888024 | Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, the starting reaction gas mixture is oxidized at a propene loading of | 05/03/2005 |
| 6878847 | Catalyst for preparation of unsaturated aldehyde and unsaturated carboxylic acid A catalyst useful for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. The catalyst consists of ring-formed shaped bodies composed of (i) a ... | 04/12/2005 |
| 6784134 | Catalyst for preparation of unsaturated aldehyde and unsaturated carboxylic acid A catalyst suited for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. Said catalyst consists of ring-formed shaped bodies composed of (i) a... | 08/31/2004 |
