Patent application number | Description | Published |
20110207968 | PROCESS FOR PREPARING 4-ISOPROPYLCYCLOHEXYLMETHANOL - The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM). | 08-25-2011 |
20110251439 | CONTINUOUS METHOD FOR PRODUCING SUBSTITUTED CYCLOHEXYLMETHANOLS - The present invention relates to a continuous process for preparing para-alkyl-substituted cyclohexylmethanols, especially 4-isopropylcyclohexylmethanol, by catalytically hydrogenating the corresponding aldehydes or ketones in the presence of hydrogen and in the presence of a catalyst which comprises, as an active metal, ruthenium applied to a support, the support comprising Al | 10-13-2011 |
20120022308 | PROCESS FOR PREPARING ACETYLENE BY THE SACHSSE-BARTHOLOME PROCESS - A process is proposed for preparing acetylene by the Sachsse-Bartholomé process by combustion of a natural gas/oxygen mixture in one or more burners to obtain a cracking gas which is cooled in two or more stages in burner columns, each burner having one or more burner columns assigned thereto, and said cracking gas being quenched with pyrolysis oil in the first cooling stage, to obtain a low boiler fraction comprising benzene, toluene and xylene from the one or more burner columns, which is cooled with direct cooling water and separated in a phase separator into an aqueous phase and an organic phase which comprises benzene, toluene and xylene and is fully or partly introduced to the top of the one or more burner columns as a return stream, wherein the organic phase comprising benzene, toluene and xylene from the phase separator, prior to full or partial recycling to the top of the one or more burner columns, is supplied to a selective hydrogenation over a catalyst which comprises at least one platinum group metal on an inorganic metal oxide as support, comprising 0.05 to 5% by weight of platinum group metal, based on the total weight of the catalyst, and wherein the selective hydrogenation is performed at a pressure in the range from 10 to 70 bar gauge and a temperature in the range from 0 to 100° C. | 01-26-2012 |
20120178947 | PROCESS FOR HYDROGENATING 1,4-BUTYNEDIOL TO GIVE MIXTURES COMPRISING TETRAHYDROFURAN, 1,4-BUTANEDIOL AND GAMMA-BUTYROLACTONE IN THE GAS PHASE - Process for preparing tetrahydrofuran, 1,4-butanediol and/or gamma-butyrolactone by hydrogenation of 1,4-butynediol, wherein 1,4-butynediol is vaporized in a hydrogen-comprising gas stream and hydrogenated in gaseous form over at least one catalyst which comprises at least one of the elements of groups 7 to 11 of the Periodic Table of the Elements. | 07-12-2012 |
20120178948 | PROCESS FOR THE HYDROGENATION OF 1,4-BUTYNEDIOL TO TETRAHYDROFURAN IN THE GAS PHASE - The present invention relates to a process for the catalytic hydrogenation of 1,4-butynediol to tetrahydrofuran at at least the decomposition temperature of 1,4-butynediol, wherein 1,4-butynediol is vaporized in a hydrogen-comprising gas stream and is hydrogenated in gaseous form over at least one catalyst, comprising at least one of the elements from groups 7 to 11 of the Periodic Table of the Elements. | 07-12-2012 |
20120245389 | PROCESS FOR HYDROGENATING NITRILES - The present invention relates to a process for hydrogenating organic nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the shaped body catalyst is arranged in a fixed bed, wherein the shaped body in the shape of spheres or rods has in each case a diameter 3 mm or less, in the shape of tablets a height of 4 mm or less, and in the case of all other geometries in each case has an equivalent diameter L=1/a′ of 0.70 mm or less, where a′ is the external surface area per unit volume (mm | 09-27-2012 |
20120271090 | ISOMERIZATION OF LINEAR ALPHA-OLEFINS - Process for isomerizing linear alpha-olefins having from 10 to 25 carbon atoms over a heterogeneous catalyst. | 10-25-2012 |
20120289747 | CATALYSTS FOR THE HYDROGENATION OF AROMATIC AMINES - The present invention relates to a catalyst comprising 4% by weight of ruthenium (Ru) or more and a support material comprising silicon dioxide, wherein the nitrogen content of the catalyst after the last drying or calcination is in the range from 1 to 3% by weight, and also catalyst precursors thereof. The present patent application further relates to a process for producing an Ru-comprising catalyst, which comprises the steps impregnation, drying, calcination and reduction. In addition, the present patent application relates to a process for hydrogenating organic substances in the presence of catalysts of the invention or catalysts produced according to the invention, and also a process for producing downstream products from cycloaliphatic amines prepared according to the invention. | 11-15-2012 |
20120296111 | CATALYST AND PROCESS FOR HYDROGENATING AROMATICS - The present invention relates to an eggshell catalyst comprising an active metal selected from the group consisting of ruthenium, rhodium, palladium, platinum and mixtures thereof, applied to a support material comprising silicon dioxide, wherein the pore volume of the support material is 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is 280 to 500 m | 11-22-2012 |