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| Number | Title | Issue Date |
| 7723549 | Process for preparing at least one target product by partial oxidation and/or ammoxidation of propylene A process for preparing at least one target product by partial oxidation and/or ammoxidation of propylene, in which the propylene source used is a propane dehydrogenation, the propane used therein being obtained by a rectificative prepurification of crude propane. | 05/25/2010 |
| 7339084 | Method for the production of acetaldehyde from ethylene and oxygen A single-stage method for the oxidation of ethylene to acetaldehyde in the presence of an aqueous catalyst solution comprising copper chloride and palladium chloride under maintenance of the circulation of the aqueous catalyst solution in a recycle reactor, comprise... | 03/04/2008 |
| 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 |
| 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 |
| 7268254 | Preparation of (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed partial oxidation of C3 and/or C4 precursor compounds in a reactor having thermoplate modules A process is proposed for partial oxidation oxidation in the gas phase of C3 and/or C4 precursor compounds to (meth)acrolein and/or (meth)acrylic acid in the presence of a heterogeneous particulate catalyst in a reactor having one ... | 09/11/2007 |
| 7087782 | Process for the preparation of acrolein and/or acrylic acid Process for the preparation of acrolein and/or acrylic acid by catalytic gas-phase selective oxidation reaction of propane, the process comprising contacting a reaction gas containing propane and an oxygen-containing gas over a mixed metal oxide solid catalyst suppo... | 08/08/2006 |
| 7084308 | Manufacture of formaldehyde from methyl bromide A process is provided for the manufacture of formaldehyde from methyl bromide. In the process, methyl bromide is oxidized with air over a catalyst to give formaldehyde and hydrogen bromide. In a preferred embodiment of the invention, a mixture of two different catal... | 08/01/2006 |
| 7026502 | Preparation of unsaturated carboxylic acids and unsaturated carboxylic acid esters from alkanes and/or alkenes Unsaturated carboxylic acids (and esters thereof) are prepared directly from alkanes (and alcohols) utilizing vapor phase oxidative esterification. ... | 04/11/2006 |
| 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 |
| 6914162 | Method for producing hydroformylation products of olefins with 2 to 8 carbon atoms A process for preparing hydroformylation products of olefins having from 2 to 8 carbon atoms comprises a) feeding a hydrocarbon feedstock into a cracking/dehydrogenation zone and subjecting it to thermal and/or catalytic cracking a... | 07/05/2005 |
| 6822123 | Formaldehyde process A process is provided for the production of formaldehyde from methyl chloride. In the process methyl chloride is oxidized with air over a catalyst to give formaldehyde and hydrogen chloride. In a preferred embodiment of the invention, a mixture of two different cata... | 11/23/2004 |
| 6781017 | Method for the production of acrolein or acrylic acid or the mixture thereof from propane In a process for the preparation of acrolein or acrylic acid or a mixture thereof from propane, the propane is subjected, in a first reaction stage, to a partial dehydrogenation under heterogeneous catalysis to give propene, of the components contained in the produc... | 08/24/2004 |
| 6768013 | Intrinsically safe oxidation process A novel process for the direct oxidation of hydrogen and hydrocarbons is disclosed, where the explosion risks inherent in gas phase oxidations are substantially eliminated. Gaseous oxidation reactants are soluble in a first reaction solvent phase such as a perfluoro... | 07/27/2004 |
| 6747162 | Counterflow reactor with a bundle of contact tubes In a reactor (1) which has a bundle of catalyst tubes (2) and in which a heat transfer medium is circulated through the space surrounding the catalyst tubes, with the ring lines (3, 4) at both ends of the reactor with openings (5, 6) thro... | 06/08/2004 |
| 6683221 | Production of formaldehyde from CH4 and H2S A method wherein a sour natural gas stream can be treated to produce primarily carbon monoxide from methane, and the carbon monoxide and hydrogensulfide are reacted to produce methyl mercaptans, (primarily methanethiol (CH3 SH) and a small amou... | 01/27/2004 |
| 6657079 | Method for mixing gases and apparatus therefor A method for mixing a plurality of gases including forming a helical flow within a mixing vessel thereby allowing simplification of construction, avoiding pressure drop to the fullest possible extent, and expediting the mixture lest the volume of a gas wi... | 12/02/2003 |
| 6563006 | Catalytic oxidative conversion of hydrocarbons to aldehydes Catalytic processes have been developed for direct ambient air oxidative conversion of hydrocarbons to aldehydes and unsaturated alcohols. Aliphatic hydrocarbons including methane, hexanes, octanes, decanes, gasoline, diesel fuel, oils, solvents and other... | 05/13/2003 |
| 6541664 | Method of heterogeneous catalyzed vapor-phase oxidation of propane to acrolein and/or acrylic acid In a process for heterogeneously catalyzed gas-phase oxidation, a reaction gas starting mixture comprising propane, molecular oxygen and, if desired, inert gas is passed at from 300 to 500° C. over a fixed-bed catalyst.... | 04/01/2003 |
| 6478851 | Ethylene treatment by gas permeation The invention relates to a process for separating off ethylene from a gas mixture comprising more than 8% by volume of carbon dioxide or oxygen, by gas permeation.... | 11/12/2002 |
| 6437193 | Vapor phase oxidation of propylene to acrolein An improved method for the selective vapor phase oxidation of propylene to acrolein in a recirculating solids reactor system using a bismuth molybdate multimetal oxide involving specific reactant concentrations (preferably 5 mol % to 30 mol % propylene, 0... | 08/20/2002 |
| 6417376 | Selective oxidation process and catalyst therefor A process for selectively oxidizing an organic molecule by reacting said organic molecule and oxygen in the presence of a selective oxidation catalyst supported on a mesh-like structure.... | 07/09/2002 |
| 6365784 | Preparation of ethylene by gas permeation The invention relates to a process for preparing carbonyl compounds from olefins and an oxidizing agent in which the olefin is oxidized in a reactor, a reaction gas mixture which comprises unoxidized olefin being formed, which comprises separating off uno... | 04/02/2002 |
| 6252122 | Industrial process for the heterogeneously catalytic gas-phase oxidation of propane to form acrolein In an industrial process for the heterogeneously catalyzed gas-phase oxidation of propane with molecular oxygen to give acrolein, the feed gas mixture having an initial undiluted molar ratio of the reactants propane:O2 of 7:3 is diluted with th... | 06/26/2001 |
| 6191308 | Process for the manufacture of oxygenates -Hydroxycarbonyl compounds are obtained from aldehydes or ketones by forming an acetal or ketal which is decomposed to a vinyl ether. The ether is selectively oxidized under conditions yielding an -hydroxy-aldehyde or -hydroxy-ketone ... | 02/20/2001 |
| 6169214 | Catalyst consisting of a hollow cylindrical carrier having a catalytically active oxide material applied to the outer surface of the carrier, and process for using said catalyst A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 μ... | 01/02/2001 |
| 6169055 | Catalyst for production of acrolein, method for production thereof, and method for production of acrolein A catalyst for producing acrolein by oxidizing ethane contains silicon, iron, an alkali metal, and oxygen. A method for producing acrolein includes the step of oxidizing ethane in the presence of the catalyst and a method for producing the catalyst includ... | 01/02/2001 |
| 6140544 | Process for preparing acetaldehyde from ethylene and oxygen A process for oxidizing a reaction gas in the presence of a catalyst solution comprising a) oxidizing the reaction gas in a reactor in the presence of the catalyst solution, a reaction mixture being formed comprising droplets of the catalyst solution, b) ... | 10/31/2000 |
| 5864051 | Selective oxidation catalyst process for preparing the catalyst and process using the catalyst A catalyst for the selective oxidation of alkanes and alkenes has been developed. The catalyst consists of a noble metal component such as platinum and a SbOx component. A unique feature of the catalyst is that the noble metal component is present as part... | 01/26/1999 |
| 5710342 | Process for preparing carbonyl compounds by catalysed oxidation of olefins and catalysts present microemulsions Carbonyl compounds can be prepared by catalytic oxidation of olefins with oxygen or oxygen-containing gases in a microemulsion (ME) as reaction medium and catalyst support. The catalysts present in ME and used for this purpose are characterized by a conte... | 01/20/1998 |
| 5684188 | Continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or a mixture thereof In a process for the continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or a mixture thereof in an oxidation reactor whose feed gas mixture comprises, apart from propylene and molecular oxygen as oxidant, only ... | 11/04/1997 |
| 5646305 | Oxygen enrichment process for air based gas phase oxidations which use metal oxide redox catalysts This invention is directed towards an improved process for the selective gas phase oxidation of a organic reactant using a metal oxide redox catalyst, wherein the organic reactant and air feeds are at a substantially continuous level, the improvement comp... | 07/08/1997 |
| 5414157 | Catalytic oxidation of alkanes Process and apparatus are provided for oxidation of oxidation of organic compounds in which a reaction zone is provided, containing an open space and a bed of solid granular catalyst, an organic feedstock and oxygen are passed in gas phase through the ope... | 05/09/1995 |
| 5414137 | Process for preparing carbonyl compounds An improved process for preparing carbonyl compounds by oxidizing olefins is disclosed. The process comprises oxidizing an olefin with oxygen or an oxygen containing gas in the presence of a palladium compound or metallic palladium, a polyoxoanion compoun... | 05/09/1995 |
| 5345011 | New manganese catalyst for light alkane oxidation Aluminophosphates containing manganese in the structural framework are employed for the oxidation of alkanes, for example the vapor phase oxidation of methane to methanol.... | 09/06/1994 |
| 5312975 | Process for the preparation of 5-(2,4-difluorophenyl)-salicylic acid A process for the preparation of 5-(2,4-difluorophenyl)-salicylic acid comprising the reaction of an organometallic derivative with a suitable substituted benzene in the presence of a transition-metal based catalyst is described.... | 05/17/1994 |
| 5191116 | Process for the preparation of methacrylic acid and methacrolein The present invention is directed to a process for preparing methacrylic acid and methacrolein in one step which comprises subjecting isobutane to catalytic oxidation in the presence of molecular oxygen in the vapor phase, with a catalyst comprising a P a... | 03/02/1993 |
| 5144090 | Method for preparing acrolein or methacrolein A method for preparing acrolein or methacrolein comprises subjecting propylene, secondary propanol, isobutylene or tertiary butanol to gas phase catalytic oxidation with molecular oxygen in the presence of a catalyst represented by the following general f... | 09/01/1992 |
| 5144091 | Preparation of acrolein or methacrolein by actalytic gas-phase oxidation of propene or isobutene A process for the catalytic gas-phase oxidation of propene or isobutene to acrolein or methacrolein in a tubular fixed bed reactor or catalytically active oxides with a ࣙ90% conversion of the initial olefin on a single passage, wherein the temperature o... | 09/01/1992 |
| 5132472 | Catalytic oxidation of alkanes Process is provided for oxidation of organic compounds in which a reaction zone is provided, containing an open space and a bed of solid granular catalyst, an organic feedstock and oxygen are passed in gas phase through the open space and then into contac... | 07/21/1992 |
| 5120877 | Process for the production of carbonyl compounds A process for the production of carbonyl compounds such as acetaldehyde is provided. This process entails reacting alpha olefins with a catalyst system containing a noble metal oxidation catalyst, cupric ions, chloride ions, and a strong acid such as sulf... | 06/09/1992 |
