Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Forschungszentrum Juelich Gmbh

Ludwig-maximilians-universitaet Munich

Kirill Kovnir

Robert Schlögl

Juri Grin

Robert Schloegl

Marc Armbruester

Rainer Giedigkeit

Marc Armbruster

Yuri Grin

Michael Baitinger

Pavel Chizhov

Anastasia Alekseeva

Rolf E Jentoft

Thorsten Kessler

Juergen Osswald

Karina Weinhold

Matthias Friedrich

Marcus Schmidt

Michael Feuerbacher

Marc Heggen

Peter Gille

Marc Armbrüster

The present invention relates to a process for the hydrogenation, in particular the selective hydrogenation of unsaturated hydrocarbon compounds, such as the selective hydrogenation of acetylene to ethylene, using a hydrogenation catalyst comprising an ordered intermetallic compound, namely an ordered cobalt-aluminum or iron-aluminum intermetallic compound. According to another aspect, the present invention relates to a catalyst comprising a support and at least one specific ordered cobalt-aluminum and/or iron-aluminum intermetallic compound supported thereon, as well as to the use of specific ordered intermetallic cobalt-aluminum and iron-aluminum intermetallic compounds as catalysts. The ordered cobalt-aluminum and iron-aluminum intermetallic compounds proved to be highly selective and long-term stable catalysts, e.g. in the selective hydrogenation of acetylene to ethylene in a large excess of ethylene.

Ordered cobalt-aluminum and iron-aluminum intermetallic compounds as hydrogenation catalysts

The present invention relates to a process for the hydrogenation, in particular selective hydrogenation of at least one unsaturated hydrocarbon compound comprising reacting the at least one unsaturated hydrocarbon compound with hydrogen in the presence of a hydrogenation catalyst, wherein the hydrogenation catalyst comprises a mixture of an ordered intermetallic compound and an inert material. According to another aspect, the present invention is concerned with the use of a mixture of at least one ordered intermetallic compound and at least one inert material, as a catalyst. The mixtures for use as a catalyst in the present invention can be prepared easily and achieve a superior activity in relation to the prior art, while preserving the high selectivity to the target compounds, e.g. in the selective hydrogenation of acetylene to ethylene.

Use of a mixture of an ordered intermetallic compound and an inert material as a catalyst and corresponding hydrogenation processes

Selective hydrogenation of unsaturated hydrocarbon compounds, e.g. of acetylene to ethylene, uses a hydrogenation catalyst comprising an ordered intermetallic compound. The ordered intermetallic compound comprises at least one metal of type A capable of activating hydrogen, and at least one metal of type B not capable of activating hydrogen. The structure of the ordered intermetallic compound is such that the type A metal is mainly surrounded by atoms of the type B metal.

Hydrogenation process using catalyst comprising ordered intermetallic compound

The present invention relates to a purification method for removing impurities containing oxygen from materials, especially boron, by hydrogen-based plasma treatment. The present procedure allows for efficient removal of oxygen while avoiding a thermal treatment that would substantially change the structure of the treated material, or a treatment leaving a reducing agent within the treated material.

Materials purification by treatment with hydrogen-based plasma

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Tallahassee, FL, United States of America

Kirill Kovnir