Basf Se Corporation

Donata Maria Fries

Thomas Schaub

Stefan Rittinger

Daniel Schneider

Martin Schäfer

Klaus-Dieter Mohl

Rocco Paciello

Joaquim Henrique Teles

Peter Bassler

Anton Meier

Petra Deckert

Nuria Huguet Subiela

Marek Pazicky

Simone Manzini

Jürgen Paschold

Thomas Schraub

A catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt from an alkene, carbon dioxide and an alkoxide having a secondary or tertiary carbon atom directly bound to a [O] group is described. The alcohol byproduct is distilled off after an intermediate phase separation. This provides pure &#x3b2;,&#x3b2;-ethylenically unsaturated carboxylic acid salt at minimum effort.

Process for preparing an unsaturated carboxylic acid salt

Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which, in step (a), a liquid stream comprising formic acid, methanol, water and tertiary amine (I) is produced by combining methyl formate, water and tertiary amine (I), from there in step (b), methanol is separated off and in step (c), formic acid is removed by distillation from the liquid stream obtained in a distillation apparatus, wherein, when methyl formate, water and tertiary amine (I) are combined, methyl formate, water and optionally tertiary amine (I) are first introduced in step (a1) in a molar ratio of 0&#x2266;n(amine to a1)/n(mefo to a1)&#x2266;0.1, and from 70 to 100% of the hydrolysis equilibrium possible is set and then, in step (a2), tertiary amine (I) is introduced in a molar ratio of 0.1&#x2266;n(amine to a2)/n(mefo to a1)&#x2266;2, and the mixture is reacted.

Process for preparing formic acid

The invention relates to a process for preparing formic acid by reaction of carbon dioxide with hydrogen in a hydrogenation reactor in the presence of a transition metal complex as a catalyst comprising at least one element from group 8, 9 or 10 of the Periodic Table and at least one phosphine ligand with at least one organic radical having at least 13 carbon atoms, of a tertiary amine and of a polar solvent to form a formic acid-amine, adduct, which is subsequently dissociated thermally to formic acid and the corresponding tertiary amine. on unit.

Process for preparing formic acid by reaction of carbon dioxide with hydrogen

Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid and tertiary amine (I) is produced by combining tertiary amine (I) and a formic acid source, secondary components comprised therein are separated off, formic acid is removed by distillation from the resulting liquid stream in a distillation apparatus, where the bottom output from the distillation apparatus is separated into two liquid phases, and the upper liquid phase is recirculated to the formic acid source and the lower liquid phase is recirculated to the separation of the secondary components and/or to the distillation apparatus, wherein low boilers are removed by distillation from the upper liquid phase and recirculated to the depleted stream.

A process for preparing formic acid by reaction of carbon dioxide () with hydrogen () in a hydrogenation reactor (I) in the presence of

Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid, tertiary amine (I) and water is produced by combining tertiary amine (I) and a formic acid source in the presence of water, water and organic decomposition products of the tertiary amine (I) are removed and formic acid is removed by distillation from the resulting liquid stream in a distillation apparatus, wherein the stream comprising water and organic decomposition products of the tertiary amine (I) which have been separated off is separated into two liquid phases, the upper liquid phase is removed and the lower, water-comprising liquid phase is recirculated to the formic acid source.

A process for preparing formic acid by reaction of carbon dioxide (1) with hydrogen (2) in a hydrogenation reactor (I) in the presence of

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Mannheim, Germany

Donata Maria Fries