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| Number | Title | Issue Date |
| 7368598 | Process for converting methane to acetic acid Provided herein are processes for conversion of methane to acetic acid. In one embodiment, the processes are for direct, selective conversion of methane to acetic acid in a single step. ... | 05/06/2008 |
| 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 |
| 7357903 | Method for reducing NOx during combustion of coal in a burner An organically complexed nanocatalyst composition is applied to or mixed with coal prior to or upon introducing the coal into a coal burner in order to catalyze the removal of coal nitrogen from the coal and its conversion into nitrogen gas prior to combustion of th... | 04/15/2008 |
| 7326811 | Method for production of (meth)acrylic acid by use of a shell-and-tube heat exchanger A shell-and-tube type heat exchanger of the smallest possible length necessary for heat exchange is disclosed which is capable of obtaining uniform distribution of flow of a shell side fluid and substantially eliminating the structural restriction imposed on the she... | 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 |
| 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 |
| 7253310 | Preparation of (meth)acrylic acid A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of a saturated hydrocarbon precursor compound, in which the charging gas mixture contains from 5 to 25% by volume of steam and the molar ratio of molecular oxygen pre... | 08/07/2007 |
| 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 |
| 7208438 | Catalyst and method for the alkylation of hydroxyaromatic compounds A method of making a catalyst comprising mixing a metal oxide precursor and a pore former to form a metal oxide precursor mixture and calcining the metal oxide precursor mixture in the presence of a flowing gas having a flow rate to form the catalyst comprising meta... | 04/24/2007 |
| 7183428 | Method for production of acrylic acid A method for producing acrylic acid by using an acrylic acid-containing solution of high concentration without azeotropic distillation is provided. This method of producing acrylic acid comprises introducing an acrylic acid-containing gas obtained by catalytic gas p... | 02/27/2007 |
| 7176159 | Catalyst and sorbent material for the production of hydrogen A catalyst and sorbent is disclosed which comprises pellets with an absorbent core and a protective shell with a catalyst in the shell. Such material is especially well suited for steam reforming of hydrocarbons to produce hydrogen since a reforming catalyst can be ... | 02/13/2007 |
| 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 |
| 7084307 | Process for oxidation of alkanes A palladium complex catalyzed process for the oxidation of linear alkanes is proposed which employs molecular oxygen as the oxidant to produce secondary alcohols and ketones in high selectivity, the said catalyst is a single entity and does not requires the use of a... | 08/01/2006 |
| 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 |
| 7074955 | Safe operation of a continuous heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound A continuously operated heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound in an oxidation reactor is operated safely by a process in which an explosion diagram for the feed gas mixture is deposited as the basis of a cut-out mecha... | 07/11/2006 |
| 7053022 | Hydrothermally synthesized MO-V-M-NB-X oxide catalysts for the selective oxidation of hydrocarbons Hydrothermally synthesized catalysts comprising a mixed metal oxide are utilized to produce unsaturated carboxylic acids by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, in the presence thereof; or to produce unsaturated nitriles b... | 05/30/2006 |
| 7045479 | Intermediate precursor compositions used to make supported catalysts having a controlled coordination structure and methods for preparing such compositions Intermediate precursor compositions for use in manufacturing supported reactive catalysts having a controlled coordination structure, and methods for manufacturing such precursor compositions are disclosed. The precursor compositions include a catalyst complex forme... | 05/16/2006 |
| 7041848 | Method for oxidizing hydrocarbons into acids The present invention relates to a process for oxidizing hydrocarbons, in particular branched or unbranched saturated aliphatic hydrocarbons, cycloaliphatic or alkylaromatic hydrocarbons to acidic or polyacidic compounds. The invention relates more particular... | 05/09/2006 |
| 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 |
| 7015356 | Process for producing dicarboxylic acids A carboxylic acid is produced by oxidative cleavage of a cycloalkane with oxygen and performs a reaction in the presence of a catalyst including an imide compound and a metallic compound, the imide compound having a cyclic imide skeleton represented by the following... | 03/21/2006 |
| 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 |
| 6958414 | Preparation of at least one organic compound by heterogeneously catalyzed partial gas-phase oxidation Organic compounds are prepared by heterogeneously catalyzed partial gas-phase oxidation of precursor compounds by a process in which a portion of the reaction gas starting mixture is brought from a low initial pressure to a higher final pressure by means of a radial... | 10/25/2005 |
| 6939991 | Preparation of acrylic acid In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separati... | 09/06/2005 |
| 6933407 | Method for producing methacrylic acid from isobutane A process prepares methacrylic acid from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and charging an oxidation zone with the isobutenic product gas mixture after the components other than isobutane and isobutene have bee... | 08/23/2005 |
| 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 |
| 6888026 | Method for producing (meth)acrylic acid An object of this invention is to provide a method for producing acrylic acid that enables to suppress adverse influence of byproducts during distillation and to accomplish long-term continuous operation of the acrylic acid production apparatus. This invention is di... | 05/03/2005 |
| 6867328 | Method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane The invention relates to a method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane on a multi-metal oxide mass, said mass containing the elements Mo, V, Te and/or Sb and having a specific X-ray diffractogram. ... | 03/15/2005 |
| 6858754 | Method for the production of acrylic acid by heterogeneously catalyzed partial propane oxidation Acrylic acid is prepared by heterogeneously catalyzed partial oxidation of propane by a process in which the steam content of the reaction gas starting mixture is reduced in the course of the process. ... | 02/22/2005 |
| 6833474 | Process for manufacturing acrylic acid from propane in the absence of molecular oxygen The invention relates to a process for manufacturing acrylic acid from propane. According to this process, a gas mixture, which is free from molecular oxygen and comprises propane, steam as well as, optionally, an inert gas, is passed over a solid composition... | 12/21/2004 |
| 6825380 | Promoted multi-metal oxide catalyst A catalyst comprising a promoted 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 alken... | 11/30/2004 |
| 6797840 | Promoted multi-metal catalyst A catalyst comprising an In promoted 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 a... | 09/28/2004 |
| 6790988 | Ir and/or Sm promoted multi-metal oxide catalyst A catalyst comprising a promoted 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 alken... | 09/14/2004 |
| 6780816 | Modified carrier, complex oxide catalyst and process for preparation of acrylic acid A modified carrier carrying on at least a part of an inert carrier surface an oxide which is represented by the formula (1): XaYbZcOd (wherein X is at least an element selected from alkaline earth metals; Y is at least an ... | 08/24/2004 |
| 6734136 | IR and/or SM promoted multi-metal oxide catalyst A catalyst comprising a promoted 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 alken... | 05/11/2004 |
| 6730808 | Oxidative reactions using membranes that selectively conduct oxygen Reactor membranes for used in oxidation reactions of hydrocarbons involving oxygen comprising a selective oxidation catalyst on a mixed conducting, oxide ion selective ceramic membrane of the composition (Sr1-xCax)1-yAyMn | 05/04/2004 |
| 6677482 | Method of manufacturing (meth) acrylic acid A method of manufacturing (meth)acrylic acid includes: a reaction step of carrying out a catalytic gas-phase oxidation reaction; an absorbing step of absorbing (meth)acrylic acid from a (meth)acrylic-acid-containing mixed gas prepared in the reaction step; ... | 01/13/2004 |
| 6664416 | Process for producing (meth)acrylic acid The present invention produces (meth)acrylic acid in a high yield in a process for producing (meth)acrylic acid by subjecting at least one member selected from the group consisting of (meth)acrolein, propane, and isobutane to catalytic gas phase oxidation... | 12/16/2003 |
| 6613940 | Method for catalytic gas phase oxidation In the reaction of catalytic gas phase oxidation by means of a shell-and-tube type reactor adapted to circulate a heating medium to the shell of the reactor through the medium of a circulation device connecting an annular conduit connected thereto, a meth... | 09/02/2003 |
| 6566551 | Method for preventing effluent gas pipe from blocking For use in a process for the production of (meth)acrylic acid comprising at least a step for the reaction of (meth)acrylic acid by catalytic gas phase oxidation and a step for the absorption thereof, a method for preventing an effluent gas pipe from block... | 05/20/2003 |
