Porous heterogeneous catalyst coated with an ionic liquid
AssigneeSud-Chemie AG
InventorsAndreas Jess, Wolfgang Korth, Bastian Etzold
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Abstract
The invention relates to a porous heterogeneous catalyst. In order to prepare a catalyst which catalyzes with a relatively high selectivity the hydrogenation of individual unsaturated bonds of polyunsaturated compounds it is proposed that the inner surface of the catalysts is coated with an ionic liquid.
Claims42
Porous heterogeneous supported metal catalyst, characterized in that the inner surface of the catalyst is coated with an ionic liquid (IL).
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Catalyst according toclaim 1 characterized in that the integral pore volume of the catalyst without the IL-coating is greater than 100 mm3/g, preferably greater than 180 mm3/g.
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Process for the preparation of a porous heterogeneous catalyst the inner surface of which is coated with an ionic liquid, comprising the following steps:
- a) the dissolving of an ionic liquid in a suitable solvent;
- b) the bringing of a porous heterogeneous supported metal catalyst into contact with the solvent containing the ionic liquid according to step a);
- c) the removal of the solvent.
Process for the preparation of a porous heterogeneous catalyst the inner surface of which is coated with an ionic liquid, comprising the following steps:
- a) the dissolving of an ionic liquid in a suitable solvent;
- b) the introduction of a porous heterogeneous supported metal catalyst into a chamber, in which a flow brought about by the application of suction to the chamber and a below-atmospheric pressure prevails;
- c) the introduction into the chamber of the solvent containing the ionic liquid;
- d) the formation of a mixture of gas and the solvent containing the ionic liquid;
- e) the continuous passing of the mixture from step d) through the catalyst;
- f) the removal of the solvent.
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Dependencies are inferred from the claim text.