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| Number | Title | Issue Date |
| 7425647 | Process for preparing a group V111-metal containing catalyst, use thereof for preparing an alkenyl carboxylate A process for preparing a catalyst by (a) selecting a carrier which is a silica based carrier which has been subjected to a series of washings with one or more aqueous liquids consisting of aqueous liquids which have a pH of least ... | 09/16/2008 |
| 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 |
| 7169735 | Catalyst and process for preparing the same The object of the present invention is to provide a catalyst that is highly active and capable of maintaining its activity for a long period of time even in a high-temperature environment. The present invention is a catalyst including: a porous carrier which is comp... | 01/30/2007 |
| 7087191 | Shell metal catalyst and a precursor thereof, a process for their preparation and the use of the catalyst A process for preparing a shell metal catalyst or a precursor of a shell metal catalyst which process includes the steps of: applying a slurry having a diluent; a catalytically active metal or a precursor compound thereof; and optionally a refractory oxide; designat... | 08/08/2006 |
| 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 |
| 6936564 | Supported catalyst consisting of metal of the platinum group and obtained by means of controlled electroless deposition The invention relates to a supported platinum group metal catalyst obtainable by controlled electroless deposition of at least one platinum group metal from a deposition solution which comprises i) at least one homogeneously dissol... | 08/30/2005 |
| 6936568 | Selective hydrogenation catalyst A catalyst for selective hydrogenation of acetylene including a high surface area support material with a surface area at least about 150 m2/g and gold wherein the gold comprises from about 0.05 to about 5.0 weight percent of the catalyst and wherein the ... | 08/30/2005 |
| 6831195 | Method for production of organic acid A method for producing an organic acid and/or an organic acid ester which utilizes a steam system permitting stable production of an organic acid and/or an organic acid ester and realizing a high thermal efficiency constantly relative to the waste heat generated in ... | 12/14/2004 |
| 6727380 | 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 optionally, at least on... | 04/27/2004 |
| 6602476 | Apparatus and process for heat exchange with fluid beds Apparatus and process for heat exchange with fluid beds comprises heat-exchange tubes located longitudinally with respect to the axis of a fluidization zone with a rectangular pitch, one side of which having a length at least one and a half times the leng... | 08/05/2003 |
| 6603038 | Method for producing catalysts containing metal nanoparticles on a porous support, especially for gas phase oxidation of ethylene and acetic acid to form vinyl acetate The invention relates to a method for producing a catalyst containing one or several metals from the group of metals comprising the sub-groups Ib and VIIIb of the periodic table on porous support particles, characterized by a first step in which one or se... | 08/05/2003 |
| 6541660 | Process for preparing C5 acetate A process is proposed for preparing C5 acetate for Vitamin A synthesis by hydroformylation of 3,4-diacetoxybut-1-ene (3,4-DABE), according to which a 3,4-DABE is used which is obtained by acetoxylation of 1,3-butadiene with acetic acid and air ... | 04/01/2003 |
| 6534672 | Fluid bed vinyl acetate catalyst A catalytically active material useful to prepare vinyl acetate monomer from ethylene, acetic acid, and an oxygen-containing gas under fluid bed conditions comprises a porous microspheroidal support containing catalytically active palladium crystallites f... | 03/18/2003 |
| 6333444 | Oxidation catalyst and process utilizing the catalyst A catalyst composition and its use for the oxidation of ethane to ethylene and/or acetic acid and/or for the oxidation of ethylene to acetic acid which comprises in combination with oxygen the elements molybdenum, vanadium, niobium and gold in the absence... | 12/25/2001 |
| 6242640 | Tertiary alkyl ester preparation using large-pore zeolite catalysts A tertiary olefin such as isobutylene is reacted with a lower unsaturated carboxylic acid to produce the ester in the presence of a large pore zeolite catalyst such as Zeolite Y, Zeolite beta or Zeolite X, the reaction can be illustrated by the equation ... | 06/05/2001 |
| 6118021 | Membrane process for argon purging from vinyl acetate reactors A process and apparatus for vinyl acetate production. A membrane unit containing a membrane selectively permeable to ethylene over argon is used to recover ethylene from the argon purge stream.... | 09/12/2000 |
| 5952523 | Method for producing vinyl acetate A method for producing vinyl acetate using ethylene, acetic acid and argon containing oxygen that maximizes selectivity and minimizes ethylene loses to purge.... | 09/14/1999 |
| 5466837 | Process for the production of hydrocarbon partial oxidation products An ethylene stream which contains ethane as an impurity or a propylene stream which contains propane as an impurity is subjected to adsorption at a temperature of 50° to 200° C. in a bed of adsorbent which selectively adsorbs ethylene or propylene, ther... | 11/14/1995 |
| 5278319 | Process for the production of hydrocarbon partial oxidation products An improved process is provided for the production of a partial oxidation product by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the partial oxidation product is... | 01/11/1994 |
| 5206423 | Acyloxylation of alkylaromatic compounds with palladium-tin catalysts This invention provides process embodiments for acyloxylation of C1 -C4 alkylaromatic compounds to produce alpha-acyloxy C1 -C4 alkyl-substituted aromatic compounds, utilizing a palladium-tin catalyst which exhi... | 04/27/1993 |
| 5189004 | Alkenyl alkanoate catalyst process This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are... | 02/23/1993 |
| 5178640 | Method for preparing a synthetic fuel and/or synthetic components for fuels, and the product obtained thereby Synthetic fuel and/or synthetic components for fuels are prepared from a mixture of aromatic polycarboxylic acids of suitable elementary composition, having a mean molecular weight of between 120 and 800 and an acidity of between 5 and 18 meq/g by partial... | 01/12/1993 |
| 5179057 | Catalysts for alkenyl alkanoate production This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are... | 01/12/1993 |
| 5179056 | Production of alkenyl alkanoate catalysts This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are... | 01/12/1993 |
| 4895682 | Hydrocarbon oxidations catalyzed by azide-activated metal coordination complexes Hydrocarbons, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidixed with air or O2 to form such products as alcohols, ketones, and the like selectively in high yields when there is employed as the catalyst a ... | 01/23/1990 |
| 4895680 | Hydrocarbon oxidations catalyzed by nitride-activated metal coordination complexes Hydrocarbon, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidized with air or O2 to form such products as alcohols, ketones, and the like in high yields when there is employed as the catalyst a highly active... | 01/23/1990 |
| 4448983 | Preparation of alkyl carboxylates A process for preparation of alkyl carboxylate mixtures enriched in alpha-methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a particular type of zeolite catalyst. The zeolites are characterized b... | 05/15/1984 |
| 4420634 | Process for the oxidation of unsaturated aliphatic hydrocarbons The invention relates to a process for the oxidation of unsaturated hydrocarbons, particularly butenes and isobutylene, for the production of acetic acid, propionic acid and acetone. Specifically the invention comprises the highly selective oxidation of a... | 12/13/1983 |
| 4375361 | Process for making a high octane fuel component A process for converting Udex raffinate to a high octane fuel component by mild, liquid phase oxidation to a product of moderate to low acidity, distilling off a neutral oxidate, esterifying the acidic residue to a neutral product and combining the neutra... | 03/01/1983 |
