Basf Aktiengesellschaft

Basf Se Corporation

Frieder Borgmeier

Hartmut Hibst

Frank Rosowski

Andreas Tenten

Sven Crone

Martin Dieterle

Götz-Peter Schindler

Mark Duda

Catharina Klanner

Juergen Wortmann

Jan Spielmann

Klaus Joachim Müller-Engel

Michael Zeilinger

Klaus Joachim Mueller-Engel

Otto Machhammer

Gerhard Cox

Goetz-Peter Schindler

Ina Grisstede

Frank Piepenbreier

Peter Zehner

Klaus Harth

Jochen Petzoldt

Kerstin Schierle-Arndt

Signe Unverricht

Michael Koch

Armin Diefenbacher

Christoph Adami

Sabine Weiguny

Hans Martan

Timo Ott

Jürgen Wortmann

Arnulf Lauterbach

Madalina Andreea Stefan

Klaus Joachim M&uuml;ller-Engel

Andreas Kempter

Feelly Ruether

Falk Simon

Bjoern Kaibel

Stefan Fassbender

Ingo Biertuempel

Hans-Günther Lintz

Stefan Faβbender

Peter Kolb

Peter Petersen

Jürgen Schneider

Ralf Diener

Hans-Guenther Lintz

Günter Renz

Elisabet Bacells Cabre

Rosario Mazarro Berdonces

Chee Jian Chan

Claudia Neumann-Liedemit

The present invention relates to an improved process for the production of alkanesulfonic acids.

Process for manufacturing alkanesulfonic acids

The present invention relates to a process for manufacturing of anhydrous methanesulfonic acid (MSA) and to methanesulfonic acid manufactured by said process and its uses.

Process for the production of anhydrous methanesulfonic acid from methane and SO3

A process for manufacturing of an alkanesulfonic acid, and an alkanesulfonic acid manufactured by the process. Aspects of the process may involve manufacturing an alkanesulfonic acid by reaction of an initiator composition with an alkane and sulfur trioxide by preparing an initiator composition by reacting aqueous hydrogen peroxide with alkanesulfonic acid and/or HSO; and reacting the initiator composition with sulfur trioxide and alkane to form an alkanesulfonic acid, wherein an alkane with a purity of at least 98.0 mol-% is used.

Process for the manufacturing of alkanesulfonic acids

The present invention relates to a process for the manufacturing of methane sulfonic acid (MSA) by reaction of a radical initiator composition with methane and sulfur trioxide comprising the steps (a) preparation of the intiator composition by reacting aqueous hydrogen peroxide with the components methane sulfonic acid and methane sulfonic acid anhydride and (b) reaction of the initiator composition from step (a) with sulfur trioxide and methane to form methane sulfonic acid. The invention further relates to the use of methane sulfonic acid anhydride (MSA anhydride) in said process and to methane sulfonic acid manufactured by said process.

Process for the manufacturing of methane sulfonic acid

The present invention deals with a process for the production of alkanesulfonic acids, in particular methanesulfonic acid, and a method of purification of the raw products.

Process for the production of alkanesulfonic acids

A process comprising: (a) distilling a melt comprising crude alkanesulfonic acid to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column or of a one-stage evaporation apparatus and a material stream comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column or of the one-stage evaporation apparatus, (b) sending the stream comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization as the starting melt to obtain crystals formed from the alkanesulfonic acid, hydrates of the alkanesulfonic acid or a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, and (d) optionally washing the crystals to remove mother liquor adhering to the crystals.

Process for purifying alkanesulfonic acids

A method for handling aqueous solutions of methanesulfonic acid (MSA) having a concentration from 50 to 99% by weight of MSA and a total chlorine content of less than 50 mg/kg in apparatuses in which the aqueous MSA solution is in contact with steel surfaces. The steel comprises austenitic steels having a chromium content of from 15 to 22% by weight and a nickel content of from 9 to 15% by weight.

Method for handling aqueous methanesulfonic acid solutions

The sequential production of a library of N different solids, in particular heterogeneous catalysts, where N within a day is an integer of at least 2, is performed by

Method for the sequential production of a heterogeneous catalyst library

A process for heterogeneously catalyzed partial direct oxidation of propane and/or isobutane, in which target product is removed in a workup stage from the product gas mixture obtained in the reaction stage, the remaining residual product gas mixture is divided into two portions of the same composition, one portion is recycled into the reaction stage and the other portion is discharged, and both the reaction stage and the workup stage are operated at elevated pressure.

Heterogeneously catalyzed partial direct oxidation of propane and/or isobutane

A process for preparing butadiene, comprising A) providing a stream (a) comprising n-butane; B) feeding stream (a) comprising into at least one first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to obtain a stream (b) comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen and low-boiling secondary constituents; C) feeding stream (b) and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating n-butane, 1-butene and 2-butene to obtain a stream (c) comprising n-butane, 2-butene, butadiene, low-boiling secondary constituents, carbon oxides and steam, wherein stream (c) has a higher content of butadiene than stream (b); D) removing the low-boiling secondary constituents and steam to obtain a stream (d) substantially consisting of n-butane, 2-butene and butadiene; E) separating stream (d) into a stream (e1) consisting substantially of n-butane and 2-butene and a stream (e2) consisting substantially of butadiene by extractive distillation; F) recycling stream (e1) into the first dehydrogenation zone.

Method for producing butadiene from n-butane

A process for preparing butadiene, comprising nonoxidatively dehydrogenating n-butane from a stream (a) in a first dehydrogenation zone to obtain stream (b) comprising 1-butene, 2-butene, and butadiene; oxidatively dehydrogenating the 1-butene and 2-butene of (b) in the presence of an oxygenous gas in a second dehydrogenation zone to obtain stream (c) comprising n-butane, butadiene, hydrogen, and steam; compressing and cooling (c) to obtain stream (d) comprising n-butane, butadiene, hydrogen, and steam; extractively distilling (d) into stream (e) comprising butadiene and stream (e) comprising n-butane, hydrogen, and steam; optionally compressing and cooling (e) to obtain stream (f) comprising n-butane and water and stream (f) comprising n-butane and hydrogen and optionally recycling (f) into the first dehydrogenation zone; separating (f) into stream (g) comprising n-butane and stream (g) comprising hydrogen by contacting (f) with a high boiling absorbent and subsequently desorbing the gas constituents dissolved in the absorbent.

Multimetal oxide materials which contain Mo and V and, if required, one or more of the elements from the group consisting of lanthanides, transition elements of the Periodic Table of the Elements and elements of the third to sixth main group of the Periodic Table of the Elements and which are prepared in the presence of an alkali metal other than Li and have the i-phase structure are used as active material in catalysts for partial gas-phase oxidations.

Mo- and V-containing multimetal oxide materials

A process for preparing butadiene, comprising nonoxidatively dehydrogenating n-butane from a stream (a) in a first dehydrogenation zone to obtain stream (b) comprising 1-butene and 2-butene; oxidatively dehydrogenating the 1-butene and 2-butene of (b) in the presence of an oxygenous gas in a second dehydrogenation zone to obtain stream (c) comprising n-butane, butadiene, hydrogen, carbon dioxide, and steam; compressing and cooling (c) to obtain stream (d2) comprising n-butane, butadiene, hydrogen, carbon dioxide, and steam; extractively distilling (d2) into stream (e1) comprising butadiene and stream (e2) comprising n-butane, hydrogen, carbon dioxide, and steam; compressing and cooling (e2) to obtain stream (f1) comprising n-butane and water and stream (f2) comprising n-butane, hydrogen, and carbon dioxide; cooling (f2) to obtain stream (g1) comprising n-butane and stream (g2) comprising carbon dioxide and hydrogen; phase separating water from (f1) to obtain stream (h1) comprising n-butane; and recycling (h1) into the first dehydrogenation zone.

Method for the production of butadine from n-butane

Processes for producing butadiene from n-butane comprising: (a) providing a feed gas stream comprising n-butane; (b) non-oxidatively dehydrogenating the feed gas stream in the presence of a catalyst in a first dehydrogenation zone to form a first intermediate gas stream comprising n-butane, 1-butene, 2-butene, butadiene and hydrogen; (c) oxidatively dehydrogenating the first intermediate gas stream in the presence of an oxygenous gas having an oxygen content of at least 75% by volume in a second dehydrogenation zone to form a second intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (d) compressing and cooling the second intermediate gas to form a first condensate stream comprising water and a third intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (e) compressing and cooling the third intermediate gas to form a second condensate stream comprising n-butane, butadiene and water and a fourth intermediate gas stream comprising n-butane, butadiene, hydrogen and carbon dioxide; (1) cooling the fourth intermediate gas stream to form a third condensate stream comprising n-butane and butadiene, and an offgas stream comprising carbon dioxide and hydrogen; (g) removing water from the second condensate stream and combining the second condensate stream and third condensate stream to form a Chydrocarbon stream comprising n-butane and butadiene; and (h) separating the Chydrocarbon stream to form a recylce stream comprising n-butane and a product stream comprising butadiene; wherein at least a portion of the recycle stream is fed to the first dehydrogenation zone.

The invention relates to a process for preparing unsaturated nitrites from the corresponding alkanes which comprises the steps:

Method for the production of unsaturated nitriles from alkanes

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Mannheim, Germany

Frieder Borgmeier