Basf Aktiengesellschaft

Basf Se Corporation

Michael Karcher

Jochem Henkelmann

Marc Heider

Mathias Haake

Ekkehard Schwab

Gerd Kaibel

Thomas Ruhl

Udo Rheude

Bram Willem Hoffer

Jan Kurt Eberhardt

Hartwig Voβ

Erich Beck

Albrecht Dams

Martin Schmidt-Radde

Heinz Eckhardt

Ulrich Jaeger

Stefan Kotrel

Horst Zimmermann

Rudi Blümmel

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

Preparation of vinyl carbamates

Oxime ethers of the general formula I ##STR1## where the variables have the following meanings: R.sup.1, R.sup.2 independently of one another hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.4 -C.sub.10 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or together a bridge of 3-14 carbon atoms,

Copolymerizable oxime ethers

Reaction mixtures obtained in addition reactions of OH-- or NH-- carrying compounds with acetylene or propyne in the presence of alkali metal alcoholates or alkali metal amides are worked up by distilling off the vaporizable components from the reaction mixture in a thin-film evaporator. Before removal of the vaporizable components from the reaction mixture, a particularly defined polyether is added thereto.

Working up reaction mixtures obtained in addition reactions with

Process for preparing silicon-containing vinyl ethers and vinyl thioethers of the general formula I ##STR1## where the variables have the following meanings: X is oxygen or sulfur,

Preparation of silicon-containing vinyl ethers and vinyl thioethers

The preparation of pyrocatechol monoethers or pyrocatechols of the formula Ia or Ib respectively ##STR1## ( R.sup.1 and R.sup.2 =H or C.sub.1 --C.sub.8 -hydrocarbon radicals; R.sup.3 =C.sub.1 --C.sub.8 -hydrocarbon radical ) by rearranging a 2-hydroxycyclohexanone dialkyl ketal II ##STR2## a) in the gas phase in the presence of a platinmetal or in the presence of a compound of one of these metals as catalyst in order to obtain a compound Ia, or

Growing community of inventors

Schwetzingen, Germany

Michael Karcher