Basf Aktiengesellschaft

Basf Se Corporation

Nils Bottke

Rolf-Hartmuth Fischer

Markus Rösch

Michael Hesse

Alexander Weck

Holger Borchert

Stephan Schlitter

Gunther Windecker

Markus Schubert

Gunnar Heydrich

Torsten Mattke

Ulrich Steinbrenner

Marco Bosch

Regina Benfer

Veronika Wloka

Thomas Narbeshuber

Daniel Breuninger

Juergen Stephan

Peter Heidebrecht

Sylvia Huber-Dirr

Jürgen Stephan

Carsten Knösche

Thomas Nöbel

Jochen Pfeifer

Lukasz Karwacki

Matthias Felischak

Elias Christopher Frei

The present invention relates to an adiabatic, zoned reactor for the reforming of NHto Nand H, the reactor particularly comprising n reaction zones arranged in sequence and extending along the axial length L of the reactor, wherein n is an integer in the range of from 2 to 5, wherein independently from one another, each of the n reaction zones comprises one or more catalytic components, wherein from the inlet reaction zone to the outlet reaction zone each reaction zone displays a lower light-off temperature T50 in the reforming of NHto Nand Hthen the subsequent downstream one. Further, the present invention relates to a production unit comprising said reactor, a process for the reforming of NHto Nand H, and use of said reactor and said production unit.

Zoned reactor for the reforming of NH

The invention relates to a process for recovering acids from product streams of organic syntheses, which comprises the steps

Method for the recovery of mineral acids from saline solutions

In a process for preparing alkylaryl compounds by reacting a C-monoolefin mixture with an aromatic hydrocarbon in the presence of an alkylation catalyst to form alkyl aromatic compounds and if appropriate subsequently sulfonating and neutralizing the resulting alkylaryl compounds, in the C-monoolefins, on average, more than 0% and up to 100% of methyl branches are present in the longest carbon chain and fewer than 50% of the methyl branches are in the 2-, 3- and 4-position, calculated starting from the chain ends of the longest carbon chain.

Method for producing alkylaryl compounds and alkylaryl sulphonates

Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.

Method for purifying tetrahydrofuran by distillation

A catalyst for the hydrogenation of C-dicarboxylic acids and/or derivatives thereof, preferably maleic anhydride, in the gas phase comprises

Method for the selective production of tetrahydrofuran by hydrogenating maleic acid anhydride

Optionally alkyl-substituted 1,4-butanediol is prepared from C-dicarboxylic acids and/or of derivatives thereof by: The catalysts employed in each of the hydrogenation stages comprise &#x2266;95% by weight of CuO, and &#x2266;5% by weight of an oxidic support, and the second reactor has a higher pressure than the first reactor.

Two-stage method for producing butanediol with intermediated separation of succinic anhydride

A process for preparing toluene derivatives of the formula I, where R, Rand Rindependently of one another are hydrogen, halogen, C&#x2013;C-alkyl, hydroxyl or C&#x2013;C-alkoxy, by hydrogenating benzaldehydes and/or benzyl alcohols of the formula II, with hydrogen in the presence of a catalyst, which is described in more detail in the description.

Method for producing toluol derivatives

The invention relates to a process for preparing optically active 2-amino-, 2-chloro-, 2-hydroxy- or 2-alkoxy-1-alcohols by catalytically hydrogenating appropriate optically active 2-amino-, 2-chloro-, 2-hydroxy- and 2-alkoxycarboxylic acids or their acid derivatives in the presence of catalysts comprising palladium and rhenium or platinum and rhenium.

Method for the production of optically active 2-amino 2-chloro, 2 hydroxy or 2-alkoxy-1-alcohols

A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C4-dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones.

Method for the simultaneous production of tetrahydrofurans and pyrrolidones

The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C-dicarboxylic acids and/or of derivatives thereof having the following steps:

Method for the production of 1,4- butane-diol by combined gas-phase and liquid-phase hydrogenation

Method for the production of 1,4- butanediol

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Mannheim, Germany

Nils Bottke