- Catalyst and process for hydrogenating aromatics
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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 m2/g, and at least 90% of the pores present have a diameter of 6 to 12 nm, to a process for preparing this eggshell catalyst, to a process for hydrogenating an organic compound which comprises at least one hydrogenatable group using the eggshell catalyst, and to the use of the eggshell catalyst for hydrogenating an organic compound.
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Page/Page column 22
(2015/07/27)
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- METHOD OF CONVEYING LIQUIDS
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The present invention relates to a method of continuously conveying a liquid which is used as starting material in a chemical reaction by means of a displacement pump having physically separate forward-transport valves and a liquid-filled bidirectional flow line between displacement pump and forward-transport valves, wherein an auxiliary liquid which is a product or a starting material of the chemical reaction and has a melting point which is below the melting point or below the saturation temperature of the liquid to be conveyed is present in the bidirectional flow line. The present invention additionally provides for the use of a product formed by hydrogenation of an aromatic compound as auxiliary liquid for conveying an aromatic compound and also the use of an alcohol or an ester derived from alcohol and carboxylic acid as auxiliary liquid for conveying carboxylic acids or carboxylic acid derivatives.
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Page/Page column 8-9
(2012/05/20)
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- Tetraalkylated biscyclohexylamine derivatives
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New biscyclohexylamine derivatives represented by the following formula STR1 wherein R1 to R4 represent identical or different alkyl groups having 1 to 6 carbon atoms; X is a single bond, a divalent aliphatic straight-chain or branched-chain group having from 2 to 10 carbon atoms, a methylene group, when at least one of the substituents R1 to R4 has more than 1 carbon atom, a divalent cycloaliphatic group having from 6 to 12 carbon atoms, a divalent aliphatic straight-chain or branched-chain group with cycloaliphatic substituents having from 6 to 8 carbon atoms, a divalent straight-chain or branched-chain dialkyl cyclohexane group having from 8 to 12 carbon atoms and a divalent straight-chain or branched-chain dialkyl benzene group having from 8 to 12 carbon atoms.
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