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Dow Global Technolgoies LLC

Basf Sf

Basf Aktiengesellschaft Ludwigshafen

Peter Bassler

Joaquim Henrique Teles

Hermann Luyken

Peter Rudolf

Alwin Rehfinger

Andreas Ansmann

Frank Ohlbach

Rolf Hartmuth Fischer

Johann-Peter Melder

Guido Voit

Norbert Rieber

Rolf-Hartmuth Fischer

Martin Merger

Ulrich Mueller

Wolfgang Siegel

Robert Baumann

Gerd Haderlein

Eberhard Fuchs

Michael Bartsch

Jens Scheidel

Tim Jungkamp

Werner Schnurr

Stefan Rittinger

Ulrich Müller

Harald Rust

Dieter Baumann

Franz Merger

Jochem Henkelmann

Ekkehard Schwab

Rocco Paciello

Wolfgang Harder

Peter Zehner

Martin Fischer

Karsten Eller

Klemens Flick

Wilhelm Ruppel

Gerd Kaibel

Andrei-Nicolae Parvulescu

Hardo Siegel

Tom Witzel

Achim Stammer

Georg Heinrich Grosch

Hartwig Voss

Thomas Schaub

Randolf Hugo

Dieter Hermeling

Michael Schulz

Alois Kindler

Michael Röper

Markus Weber

Dominic Riedel

Till Gerlach

Hans-Georg Goebbel

Anne Wenzel

Stefan Maixner

Meinolf Weidenbach

Andreas Walch

Georg Krug

Christoph Benisch

Kai Gumlich

Daniel Schneider

Martin Schäfer

Philip Kampe

Christian Bartosch

Richard Jacubinas

Klaus-Dieter Mohl

Donata Maria Fries

Peter Pfab

Ulrich M&uuml;ller

Dagmar Pascale Kunsmann-Keitel

Anna Forlin

Michael Kopietz

Peter Resch

Helmut Winterling

Tobias Aechtner

Petra Deckert

Malte Schulz

Gunther Achhammer

Goetz-Peter Schindler

Ortmund Lang

Claus-Ulrich Priester

Richard Krabetz

Daniel Urbanczyk

Wolfgang Loth

Peter Lechtken

Arnd B&ouml;ttcher

Gerd Duembgen

Karl Baer

Werner Hefner

Gerd Fouquet

Bianca Seelig

Peter Hammes

Christian Miller

Anton Negele

Werner J Witzl

Hans-Georg Göbbel

Benoit Blank

Helmuth Menig

Thomas Grassler

Volker Vogt

A continuous process for the preparation of propylene oxide, comprising (i) providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, water, optionally propane, and at least one dissolved potassium salt of a phosphorus oxyacid wherein the molar ratio of potassium relative to phosphorus in the at least one potassium salt of a phosphorus oxyacid is in the range of from 0.6 to 1.4; (ii) passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW comprising zinc, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane; (iii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the at least one dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane.

Process for preparing propylene oxide

A process is described for preparing 3-pentenenitrile, characterized by the following process steps:

Method for producing linear pentenenitrile

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

A process is described for the preparation of 5-hydroxymethylfurfural (HMF), which comprises the following steps:

Process for the preparation of 5-hydroxymethylfurfural (HMF)

A process for producing propylene oxide comprising reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (G1) comprising propylene oxide, unreacted propene, and oxygen; separating propylene oxide from mixture (G1) to give a mixture (GII) comprising propene and oxygen; and adding hydrogen to mixture (GII) and reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising copper in elemental and/or oxidic form on a support, wherein copper is present on the support in an amount of 30 to 80 wt.-% based on the whole catalyst and calculated as CuO.

Process for producing propylene oxide

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.

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 continuous process for the production of propylene oxide comprising reacting propene with hydrogen peroxide in methanolic solution in the presence of a titanium silicalite-1 catalyst to obtain propylene oxide, wherein a reaction feed comprising propene, methanol and hydrogen peroxide is introduced into a reactor, said reaction feed containing potassium cations and phosphorus in the form of anions of at least one phosphorus oxyacid.

Process for the production of propylene oxide

Process for preparing propylene oxide, which comprises at least the steps (i) and (ii):

Method for producing propylene oxide

The present invention relates to a process for treating a solid material containing at least one zeolite and being at least partly crystalline or treating a shaped body obtained from said solid material wherein said solid material or shaped body is brought in contact with a composition containing water after at least one of the following steps of an integrated process for producing a solid material or a shaped body containing at least one zeolite: (i) after step (II) of separating the at least partly crystalline solid material from its mother liquor or (ii) after step (S) of shaping said solid material into a shaped body or (iii) after a step (C) of calcining said solid material or said shaped body. The present invention furthermore relates to the solid material obtainable by the inventive process and the shaped body obtainable by the inventive process. The present invention also relates to the use of the solid material or the shaped body as mentioned above as a catalyst in chemical reactions, in particular in reactions of compounds containing at least one C-C double bond with at least one hydroperoxide.

Process for epoxidation and catalyst to be used therein

The present invention relates to a continuous process for the preparation of an olefin oxide wherein an olefin is reacted with a hydroperoxidein the presence of a catalyst, and wherein the reaction which is carried out in at least three reactors operated in parallel is controlled by specifically adjusting the catalyst loads in the reactors.

Process for the preparation of an olefin oxide

A process for extractively removing homogeneously dissolved catalysts from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles with a hydrocarbon H, including performing the steps of a) concentrating the reaction effluent before step b) by distillation at pressures of from 0.1 to 5000 mbar and temperatures of from 10 to 150&#xb0; C., b) adding a hydrocarbon H to the concentrated reaction effluent to obtain a stream I, and c) feeding stream I, without prior separation of the liquid phases, into an extraction apparatus and extracting it at a temperature T with the hydrocarbon H to obtain a stream II comprising the hydrocarbon H enriched with the catalyst and a stream III having a low catalyst content.

Extraction of nickel (0) complexes from nitrile mixtures with reduced rag formation

Process and apparatus for the continuous preparation of a chemical compound in at least one reactor, where at least one of the reactors is a shell-and-tube reactor which has a shell and at least one internal tube located within the shell, wherein at least one of the internal tubes has, at least in part, a noncircular cross section and a helical configuration in the region in which it is surrounded by the shell.

Pipe assembly reactor comprising a helically shaped cross section

The present invention provides a process for the epoxidation of propene which comprises reacting propene with hydrogen peroxide in the presence of methanol as solvent and a titanium zeolite catalyst, the process further comprising separating propylene oxide from the reaction mixture to obtain a mixture comprising methanol, water, at least one carboxylic acid and at least one carbonyl compound, wherein the at least one carboxylic acid is at least partially neutralized, said process optionally comprising a hydrogenation stage.

Process for epoxidizing propene

An apparatus for carrying out a continuous process for preparing propylene glycols.

Method for the continuous production of propylene glycol

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Viernheim, Germany

Peter Bassler