Celanese Gmbh

Ruhrchemie Aktiengesellschaft

Celanese Chemicals Europe Gmbh

Carl-Dieter Frohning

Helmut Bahrmann

Sandra Bogdanovic

Hans-Jerg Kleiner

Boy Cornils

Steffen Haber

Ernst Wiebus

Matthias Beller

Wolfgang Lipps

Bernd Bussemeier

The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170&deg; C. and a pressure of between 1 and 300 bar an olefinically unsaturated C,-C,compound in the presence aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 10 and 70 wt % of a compound of formula (1), R(OCH,CH,),OR,, R standing for hydrogen, a straight-chain or branched C,-C,alkyl group or a C,-C,hydroxyalkyl group, R,standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.

Process for preparing aldehydes in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst

The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170&deg; C. and a pressure of between 1 and 300 bar an olefinically unsaturated C,-C,compound in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 1 and 35 wt % of a compound of formula (1), R(OCH,CH,),OR,, R standing for hydrogen, a straight-chain or branched C,-C,alkyl group or a C,-C,hydroxyalkyl group, R,standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.

Process for preparing aldehydes by hydroformylation

A catalyst comprising rhodium and a compound of the formula (I)

Catalyst and process for the production of aldehydes by hydroformylation of olefinically unsaturated compounds

Tertiary phosphanes containing alkylene glycol groups

The present invention relates to a process for producing ethanol and n-propanol by reacting methanol with carbon monoxide and hydrogen at elevated pressure and temperature. A system consisting of a cobalt compound, a ruthenium compound, an iodide, and an organic phosphine serves as the catalyst. The organic phosphine contains a group having a --SO.sub.3 M, --COOM or --OSO.sub.3 M radical.

Process for producing ethanol and n-propanol from methanol and synthesis

The conventional process for the preparation of unsaturated hydrocarbons comprises catalytic hydrogenation of carbon oxides at 220.degree. to 500.degree. C. and pressures of up to 30 bars. It has been found that, by carrying out the foregoing reaction in the presence of at least one low molecular weight aliphatic alcohol, the yield of olefins and the catalyst life are substantially and surprisingly improved.

Growing community of inventors

Wesel, Germany

Carl-Dieter Frohning