Patent application number | Description | Published |
20080200730 | PROCESS FOR PREPARING METHYL MERCAPTAN FROM DIALKYL SULPHIDES AND DIALKYL POLYSULPHIDES - A process for continuously preparing methyl mercaptan by reacting a reactant mixture which contains a dialkyl sulphide and a dialkyl polysulphide with hydrogen sulphide to give methyl mercaptan. | 08-21-2008 |
20080214384 | PROCESS FOR REGENERATING A CATALYST - A process for regenerating a catalyst used in the preparation of acrolein from glycerol, which comprises tungsten compounds and has acidic properties and at least one promoter. | 09-04-2008 |
20080248538 | Cyanide-Tolerant Nitrile Hydratases - Disclosed herein are cyanide-tolerant nitrile hydratases especially from | 10-09-2008 |
20080253926 | Device for Carrying Out Chemical Reactions - The invention relates to a device for carrying out exothermal chemical reactions wherein a gas phase is guided across a fixed bed and allowed to react. Said device comprises a housing and an exchangeable unit wherein the reaction takes place. | 10-16-2008 |
20080262270 | CATALYST FOR THE PREPARATION OF METHYL MERCAPTAN - The present invention refers to a catalyst for the manufacture of methyl mercaptan from carbon oxides comprising Mo and K compounds and oxides or sulfides of metals chosen from the manganese group. The improvement of the present process consists of the fact that carbon dioxide can be converted with higher conversions and selectivities to methyl mercaptan as compared to state-of-the-art technologies, with only minor amounts of carbon monoxide being formed as side product. Simultaneously, carbon monoxide can be easily converted into carbon dioxide and hydrogen by reaction with water using established water-gas-shift-technologies thus increasing the overall selectivity to methyl mercaptan. | 10-23-2008 |
20080293974 | PROCESS FOR CONTINUOUSLY PREPARING METHYL MERCAPTAN FROM CARBON- AND HYDROGEN-CONTAINING COMPOUNDS - Provided is a process for continuously preparing methyl mercaptan by reacting a reactant mixture comprising solid, liquid and/or gaseous carbon- and/or hydrogen-containing compounds with air or oxygen, and/or water and sulfur. | 11-27-2008 |
20090030230 | MIXED OXIDE CATALYSTS FOR THE CATALYTIC GAS-PHASE OXIDATION OF OLEFINS AND PROCESSES FOR PRODUCING THEM - The invention relates to mixed oxide catalysts for the catalytic gas-phase oxidation of olefins and methylated aromatics, processes for producing the catalysts and the reaction with air or oxygen in the presence of inert gases in various ratios at elevated temperatures and pressure to form aldehydes and carboxylic acids. | 01-29-2009 |
20090053130 | REACTION VESSEL FOR THE PRODUCTION OF HYDROGEN SULPHIDE - The invention relates to a reaction vessel in which hydrogen sulphide is produced from sulphur and hydrogen, wherein the reaction vessel is partially or completely made up of a material which is resistant to the reaction mixture and its compounds and/or elements and which remains resistant even at high temperatures. | 02-26-2009 |
20090054691 | PROCESS FOR PREPARING METHYL MERCAPTAN - The present invention relates to a process for continuously preparing methyl mercaptan from hydrogen sulphide and methanol in a direct connection with the preparation of hydrogen sulphide. | 02-26-2009 |
20090076302 | PROCESS FOR PREPARING a-KETO ACIDS AND DERIVATIVES THEREOF - A method for preparing α-keto acids, especially α-ketomethionine, and/or derivatives thereof, whereby an aldehyde is reacted with thiols to give a corresponding dithioacetal, the dithioacetal formed, is reacted with an electrophile in the presence of a strong base, and the resulting α,α-(dithio)carboxylic acid is solvolyzed with acid-catalysis to release thiol and give the α-keto acid or a derivative thereof. Umpolung of aliphatic or aromatic aldehydes is effected by reaction with thiols. | 03-19-2009 |
20090162474 | 2-METHYLTHIOETHYL-SUBSTITUTED HETEROCYCLES AS FEED ADDITIVES - A chemical compound of the general formula I or II is useful as feed additive: | 06-25-2009 |
20100041548 | PROCESS FOR THE MANUFACTURE OF METHYLMERCAPTAN - The present invention refers to a continuous process for the manufacture of methyl mercaptan using Mo—O—K-based catalysts. It is further described that the total selectivity of methylmercaptan can be increased by at least 1% by lowering the total gas hourly space velocity. The invention further refers to a process for the preparation of a solid, preformed catalyst system. | 02-18-2010 |
20100094059 | MO CONTAINING CATALYST, A PREPARATION METHOD AND A METHOD FOR PREPARING METHYL MERCAPTAN - A method is described to prepare a Mo containing supported catalyst comprising TeO | 04-15-2010 |
20100113833 | Novel Catalysts and Process for Dehydrating Glycerol - A process for preparing acrolein from glycerol using an acidic solid-state catalyst which comprises tungsten compounds and further promoters. | 05-06-2010 |
20100248952 | CATALYSTS CONTAINING TUNGSTATE FOR THE SYNTHESIS OF ALKYL MERCAPTAN AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is <2:1. | 09-30-2010 |
20100261250 | Cyanide-Tolerant Nitrile Hydratases - Disclosed herein are cyanide-tolerant nitrile hydratases especially from | 10-14-2010 |
20100286450 | MIXED OXIDE CATALYSTS FOR CATALYTIC GAS PHASE OXIDATION - The invention relates to mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressure, and a method for the production of catalysts. | 11-11-2010 |
20100304449 | Method for Obtaining Products Containing Different Concentrations of Compounds Produced by Fermentation - The invention relates to a method for producing different products comprising a target substance, particularly amino acids or vitamins, wherein the target substance is produced by fermentation. | 12-02-2010 |
20100324331 | MIXED OXIDE CATALYSTS MADE OF HOLLOW SHAPES - The invention relates to mixed oxide catalysts made of hollow shapes for the catalytic gas phase oxidation of olefins, and to a method for producing the catalysts by applying them as a layer to a carrier made of organic material and removing said organic material. The reaction into aldehydes and carboxylic acids occurs by air or oxygen in the presence of inert gases in different quantity ratios, at elevated temperatures and pressure in the presence of said catalysts. | 12-23-2010 |
20110263415 | Mixed Oxide Catalysts for Catalytic Gas Phase Oxidation - Disclosed herein are mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressure, and a method for the production of catalysts. | 10-27-2011 |
20120277095 | CATALYSTS CONTAINING TUNGSTATE FOR THE SYNTHESIS OF ALKYL MERCAPTAN AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is <2:1. | 11-01-2012 |
20120283088 | Mixed Oxide Catalysts Made of Hollow Shapes - The invention relates to mixed oxide catalysts made of hollow shapes for the catalytic gas phase oxidation of olefins, and to a method for producing the catalysts by applying them as a layer to a carrier made of organic material and removing said organic material. The reaction into aldehydes and carboxylic acids occurs by air or oxygen in the presence of inert gases in different quantity ratios, at elevated temperatures and pressure in the presence of said catalysts. | 11-08-2012 |
20150051421 | PROCESS FOR THE PREPARATION OF METHIONINE - The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. | 02-19-2015 |