Basf Aktiengesellschaft

Basf Se Corporation

Mathias Haake

Ekkehard Schwab

Gerd Kaibel

Manfred Stroezel

Michael Karcher

Udo Rheude

Michael Koch

Bram Willem Hoffer

Jan Kurt Eberhardt

Hartwig Voβ

Andreas Kramer

Achim Stammer

Frank Funke

Andreas Ansmann

Walter Dobler

Till Gerlach

Detlef Kratz

Gerhard Schulz

Matthias Dernbach

Thomas Hill

Regina Benfer

Hermann Petersen

Marcus Sigl

Peter Schreyer

Bernhard Bockstiegel

Heinz Etzrodt

Stefan Kotrel

Christian Miller

J&ouml;rg Therre

Franz Josef Br&ouml;cker

Andreas Weiper-Idelmann

Lothar Laupichler

Klaus Reimer

Ulrich Kammel

Hans-Georg G&ouml;bbel

Helmut Boos

Franz Josef Bröcker

Gerd Rohrbacher

J&uuml;rgen Schossig

Rudi Blümmel

Michael Schulik

Harald Dialer

Hans-Joachim Müller

Gerhard Dörsam

A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.

Process for continuous hydrogenation or hydrogenating amination

A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.

The invention relates to a process for removing carbon monoxide from a hydrogenous gas stream by reacting the carbon monoxide with hydrogen to give methane and water in the presence of a heterogeneous catalyst. In this process, the catalyst is present in the form of a thin-layer catalyst on a support material. The invention further relates to an apparatus for carrying out the process.

Device and method for removing carbon monoxide from a gaseous stream containing hydrogen

A process for regenerating a hydrogenation catalyst which has been used in a gas-phase hydrogenation, which comprises stripping at from 50 to 300&#xb0; C. with a substance or a substance mixture which under the process conditions has no oxidizing action and is present in the gaseous state is described.

Method for regenerating a hydrogenation catalyst

The invention relates to a process and apparatus for the isothermal operation of heterogeneously catalyzed reactions involving at least three phases in the form of a gaseous phase, a liquid phase and a solid phase. The invention provides apparatus for carrying out reactions involving a gaseous phase, a liquid phase and a solid phase, comprising (i) a dispersing element for dispersing a gas phase in a liquid phase to generate a reaction fluid, (ii) at least one reactor which possesses an inlet, an outlet and a reactor space bounded by heat-removing walls which are spaced apart substantially uniformly along the main flow axis of the reaction fluid, and which is fitted with catalyst-coated metal fabric, and (iii) a feed line which routes the reaction fluid from the dispersing element to the reactor inlet and is sufficiently short that the degree of dispersion of the reaction fluid does not substantially change in the course of the passage through the feed line.

Isothermal operation of heterogeneously catalyzed three phase reactions

A supported catalyst is proposed comprising one or more metal oxides as active component on a catalyst support for carrying out an aldol condensation, with the catalyst support being &#x3b3;-aluminum oxide, the active component comprising one or more oxides of the elements having atomic numbers 39 or from 57 to 71 and the concentration of the active component being in the range from 5 to 12% by weight, based on the weight of the catalyst support.

Supported metal oxides as catalysts for aldol condensations

The invention relates to a method for cleaning crude terephthalic acid by means of catalytic, hydrogenating aftertreatment using a catalyst material containing at least one hydrogenation metal applied to a carbon carrier consisting of carbon fibres. The invention also relates to a catalyst consisting of the at least one catalyst material containing the at least one hydrogenation metal applied to the carbon fibres, the BET surface of the carbon carrier being &#x3c;500 m/g, and a monolithic catalyst consisting of said at least one catalyst material containing the at least one hydrogenation material applied to the carbon fibres, and at least one support element or skeleton element which differs from the catalyst material and is connected to the same, said element mechanically supporting the catalyst material and maintaining the same in a monolithic form. The invention further relates to a method for producing the monolithic catalyst and the use thereof, a reactor containing a plane catalyst material in the form of woven fabric, knitted fabric and/or felt, the use of the same and a method for the selective hydrogenation of carbon-carbon double or triple bonds and/or hydrogenable functional groups in organic compounds containing the same.

Method for cleaning crude terephthalic acid and catalysts suitable for the same and containing carbon fibers

Raney alloy catalysts applied to a support are described, said catalysts having an extremely thin layer of Raney alloy with a thickness of 0.01 to 100 &#x3bc;m. These catalysts are prepared by vapor deposition of the appropriate metals under reduced pressure. They are generally suitable for all known hydrogenation and dehydrogenation reactions and are extremely abrasion-resistant.

Thin layer catalysts based on Raney alloys, and method for the production thereof

Selective liquid phase hydrogenation of carbonyl compounds to give the corresponding alcohols in the presence of a Pt/ZnO catalyst

The present invention relates to a continuous process for the preparation of cinnamaldehyde or cinnamaldehyde derivatives by continuous reaction of benzaldehyde derivatives with alkanals in the presence of bases and optionally subsequent continuous hydrogenation in a circulation reactor in the presence of a suspension catalyst and hydrogen to give dihydrocinnamaldehyde derivatives.

Continuous method for production of cinnamaldehyde and dihydrocinnamaldehyde derivatives

A process for greatly improving the color index of polyhydric alcohols, especially trimethylolpropane, by hydrogenation comprises using, in the hydrogenation, an alcohol which has already been purified by distillation. The catalysts used are those conventionally employed in hydrogenations, preferably copper, nickel, palladium or ruthenium catalysts.

Color number improvement in polyhydric alcohols by hydrogenation

Preparation of C10-C30-alkenes by partial hydrogenation of alkynes over fixed-bed supported palladium catalysts

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Mannheim, Germany

Mathias Haake