Abstract: 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.

Abstract: The present invention relates to a process for preparing fatty alcohols, in which a stream comprising at least one fatty acid triglyceride is provided and this stream is subjected to a hydrogenation in the presence of a heterogeneous copper catalyst.

Abstract: The present invention relates to a method of regenerating a ruthenium catalyst suitable for hydrogenation, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity has been attained. The method is particularly useful for ruthenium catalysts which are used for the hydrogenation of aromatics.

Abstract: 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 Al2O3 and/or SiO2, and the catalyst being used in the form of a fixed bed catalyst in a hydrogenation reactor or in a plurality of hydrogenation reactors connected in series.

Abstract: 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.

Abstract: The present invention relates to a process for preparing fatty alcohols, in which a stream comprising at least one fatty acid triglyceride is provided and this stream is subjected to a hydrogenation in the presence of a heterogeneous copper catalyst.

Abstract: The invention relates to a process for preparing reactive zinc by electrochemical reduction, wherein iron or steel is used as cathode material.

Abstract: 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 Al2O3 and/or SiO2, and the catalyst being used in the form of a fixed bed catalyst in a hydrogenation reactor or in a plurality of hydrogenation reactors connected in series.

Abstract: Process for regenerating a ruthenium-containing supported hydrogenation catalyst. wherein the catalyst is treated with steam and then dried. Integrated process for hydrogenating benzene to cyclohexane in the presence of a ruthenium-containing supported catalyst, comprising, as well as the hydrogenation step. the catalyst regeneration steps.

Abstract: The present invention relates to a process for preparing cyclohexyl-substituted phosphines. The invention further relates to a process for preparing cyclohexyl-substituted phosphine oxides which can be used as intermediates in the preparation of cyclohexyl-substituted phosphines.

Abstract: The present invention relates to a method of regenerating a ruthenium catalyst suitable for hydrogenation, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity has been attained. The method is particularly useful for ruthenium catalysts which are used for the hydrogenation of aromatics.