Abstract:
PROBLEM TO BE SOLVED: To provide a method for preparing tetrahydrogeranylacetone by selectively hydrogenating pseudoionone, geranylacetone and/or dihydrogeranylacetone. SOLUTION: A method for preparing tetrahydrogeranylacetone is disclosed, wherein pseudoionone, geranylacetone and/or dihydrogeranylacetone are (is) contained in a liquid phase, in which particles of a catalyst which is preferentially hydrogenating carbon-carbon double bonds over carbon-oxygen double bonds are suspended, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A method for producing dicarboxylic acids by oxidation of cycloaliphatic alcohols, cycloaliphatic ketones, or mixtures thereof with nitric acid, in that the reaction and separation of the components is performed in a fractionation or rectification column.
Abstract:
Process for producing dicarboxylic acid comprises oxidation of cycloaliphatic alcohols and/or cycloaliphatic ketone with nitric acid, where the reaction and the separation of the components are carried out in a fractionating-, reaction-, and/or rectification-column.
Abstract:
Process for producing dicarboxylic acid, comprises oxidation of cycloaliphatic alcohols and/or cycloaliphatic ketone with nitric acid, where the reaction and the separation of the components are carried out in a fractionating-, reaction-, and/or rectification-column.
Abstract:
Procedimiento para la elaboración de tetrahidrogeranilacetona, en el que se conduce una fase líquida, que comprenda al menos un 90% en peso de pseudojonona y en la que hay partículas de un catalizador suspendidas, que es capaz de la hidrogenación preferencial de los dobles enlaces carbono-carbono antes de los dobles enlaces carbono-oxígeno y cuyo componente activo contiene paladio, en presencia de un gas conteniendo hidrógeno a través de un dispositivo, que inhibe el transporte de las partículas de catalizador.
Abstract:
Cuerpos de relleno o empaquetados para el intercambio térmico y de sustancias en materiales metálicos, donde el material de partida se compone de distintas capas de material, donde una capa situada en el interior se compone de acero al carbono inoxidable, conveniente en cuanto a los costes, y garantiza mayormente la estabilidad mecánica, y esa capa situada en el interior está revestida de ambos lados con una capa más delgada de un material más resistente a la corrosión, caracterizado porque el material más resistente a la corrosión es metal, donde al menos una de las capas externas se compone de estaño o de cromo.
Abstract:
A process is proposed for reprocessing the exhaust gas from a plant for producing hydroxylamine or hydroxylammonium salts by catalytic reduction of nitrogen monoxide with hydrogen for the purpose of utilization of at least a part of the nitrogen monoxide and if appropriate hydrogen present in the exhaust gas for producing hydroxylamine or hydroxylammonium salts, which comprises, in a first separation stage, selectively separating off nitrogen monoxide from the exhaust gas of the plant for producing hydroxylamine or hydroxylammonium salts.