Basf Aktiengesellschaft

Andrea Frenzel

Michael Hesse

Ekkehard Schwab

Andreas Ansmann

Hans-Martin Allmann

Gerd Linden

Herbert Wanjek

Cristina Freire Erdbr&uuml;gger

Constantinos G Vayenas

Alexandros Giannikos

Panagiotis Petrolekas

Constantinos Pliangos

The invention relates to a process for the selective hydrogenation of alkynes and dienes in C2-C5-olefin mixtures,&#x2014;in C2- or C3-streams of the olefin preparation by cracking. The method comprises conducting the hydrogenation in the presence of a catalyst particle comprising (a) a metal of the tenth group of the Periodic Table, (b) a metal of the eleventh group of the Periodic Table and (c) optionally a compound of a metal of the first or second group of the Periodic Table. Components (a) and (b), and optionally (c), are applied to a support selected from the group consisting of silica, titanium dioxide, zirconium oxides, spinels, zinc aluminates, zinc titanate, aluminosilicates and mixtures thereof. The metal of the eleventh group is distributed homogeneously over the cross-section of the catalyst particle, and the metal of the tenth group is present in an edge layer close to the surface of the catalyst particle.

Supported catalyst for the selective hydrogenation of alkynes and dienes

A catalyst for the selective hydrogenation of alkynes and dienes in C2-C5-olefin mixtures is described. These catalysts contain

Carrier catalytic converter for the selective hydrogenation of alkines and dienes

A catalyst comprising at least one metal of the 10th group of the Periodic Table of the Elements and at least one metal of the 11th group of the Periodic Table of the Elements on an aluminum oxide support, wherein the metal or metals of the 10th group is or are essentially concentrated in an outer layer close to the surface of the catalyst particle, the metal or metals of the 11th group is or are distributed essentially uniformly over the volume of the catalyst particle and the weight ratio of the metal or metals of the 11th group to the metal or metals of the 10th group is not more than 1.95.

Catalyst and process for the selective hydrogenation of unsaturated compounds in hydrocarbon streams

A process is provided for the selective hydrogenation of at least one organic compound having at least one unsaturated group, by bringing the at least one organic compound into contact with a hydrogen-containing gas in the presence of a catalyst, wherein the catalyst comprises an active material which is applied to a solid electrolyte to which, in turn, a metallic substrate is connected in such a way that a current flows through the solid electrolyte, so that the active material can be kept at a constant potential and a voltage is applied to

Hydrogenation of organic compounds with the use of the NEMCA effect

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Limburgerhof, Germany

Andrea Frenzel