Basf Aktiengesellschaft

Basf Se Corporation

Martin Karches

Martin Sesing

Lothar Seidemann

Olga Schubert

Heiko Urtel

Eckhard Stroefer

Christian Schneider

Martin Sohn

Hartwig Voss

Thomas Wettling

Heiner Schelling

Sebastian Ahrens

Bernd Sachweh

Reinhold Rieger

Thomas Grassler

Dieter Stuetzer

Guido Henze

Armin Diefenbacher

Andreas Wölfert

Michael Schönherr

Bernd Rumpf

Volker Seidl

Hermann Ascherl

Joana Coelho Tsou

Heinrich-Josef Blankertz

Werner Bochnitschek

Filip Deberdt

Jürgen Ciprian

Franz Weber

Thorsten Von Fehren

Carsten Knösche

Oliver Odenwald

Juergen Ciprian

Uwe Rachwalsky

Christian Benz

Dieter Stützer

Kati Bachmann

Matthias Klötzer

Marco-Christian Volland

Jörg Halpap

Carolin Nadine Duecker

Toni Kustura

Alexandra Wiedemann

Knud Jacobsen

Markus LINSENBÜHLER

Process for preparing chlorine by oxidation of hydrogen chloride by means of oxygen in the presence of a particulate catalyst in a fluidized-bed reactor, where the heat of reaction of the exothermic oxidation of hydrogen chloride is removed by means of water which circulates in the tubes of a shell-and-tube heat exchanger, where (i) the fluidized-bed reactor is heated up to an operating temperature in the range from 350 to 420&#xb0; C. in a heating-up phase and (ii) hydrogen chloride is reacted with oxygen in an operating phase at the operating temperature, wherein

Process for preparing chlorine from HCI

The invention relates to a process for regenerating a hydrogen chloride oxidation catalyst comprising ruthenium oxide on a support material, which comprises the steps

Process for regenerating a catalyst comprising ruthenium oxide for the oxidation of hydrogen chloride

Catalyst comprising ruthenium on a support for the catalytic oxidation of hydrogen chloride by means of oxygen to form chlorine, wherein the catalyst comprises from 0.01 to 10% by weight of silver and/or calcium as dopant. The support preferably consists essentially of alpha-aluminum oxide. The catalyst preferably comprises

Catalyst comprising ruthenium and silver and/or calcium for the oxidation of hydrogen chloride

The present invention comprises a process for purifying isocyanate-comprising residues.

Method for purifying residues containing isocyanates

The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C-C-aliphatics, comprising the steps of

Process for preparing benzene from methane

The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is not readily soluble in mineral acid, which comprises the steps:

Process for recovering ruthenium from used ruthenium oxide-comprising catalysts

An oxidation process employing a mechanically stable catalyst of an active metal or combination of active metals supported on aluminum oxide, which is predominantly alpha-aluminum oxide, is provided. The active metal or metals is optionally one or a mixture of ruthenium, copper, gold, an alkaline earth metal, an alkali metal, palladium, platinum, osmium, iridium, silver, and rhenium. The process is applicable to the oxidation of hydrogen chloride to chlorine in a Deacon process.

Mechanically stable catalyst based on alpha-alumina

A catalytic process for preparing chlorine from hydrogen chloride, which includes recycle of process streams with reduced accumulation of inert gases in the system is provided. The process includes a step wherein a compressed liquid stream comprising chlorine, carbon dioxide and oxygen is recycled into a column countercurrent to the ascending gas phase and feeding part of the chlorine-rich liquid phase leaving the bottom of the column back into the top of the column. Carbon dioxide present in the ascending gas stream is dissolved out of the gas stream and can later be separated from chlorine without problems by distillation.

Method for producing chlorine

A fluidized-bed reactor for carrying out a gas-phase reaction, in which a gaseous reaction mixture flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed and internals are arranged in the fluidized bed, wherein the internals divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.

Fluidized-bed reactor for carrying out a gas-phase reaction

A catalyst for gas-phase reactions which has high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide in the support consists essentially of alpha-aluminum oxide. Ruthenium, copper and/or gold are preferred as active metal. Particularly preferred catalysts according to invention comprise The catalysts are preferably used in the oxidation of hydrogen chloride (Deacon reaction).

(Chloro)hydrocarbon-free hydrogen chloride and phosgene-free (chloro)hydrocarbons are recovered from a hydrogen chloride stream having (chloro)hydrocarbons and phosgene. The recovery involves connecting a first adsorber and a second adsorber in series and passing the fresh hydrogen chloride stream comprising phosgene and (chloro)hydrocarbons firstly through the first adsorber and subsequently through the second adsorber until essentially no more (chloro)hydrocarbon is adsorbed by the first adsorber, passing the fresh hydrogen chloride stream through the second adsorber while the first adsorber is regenerated, with essentially phosgene-free (chloro)hydrocarbon being obtained in the regeneration, passing the fresh hydrogen chloride stream firstly through the second adsorber and subsequently through the regenerated first adsorber until essentially no more (chloro)hydrocarbon is adsorbed by the second adsorber, and passing the fresh hydrogen chloride stream through the first adsorber while the second adsorber is regenerated, with essentially phosgene-free (chloro)hydrocarbon being obtained in the regeneration.

Process for extracting (chlorinated) hydrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene

The present invention relates to a process for preparing polyisobutene by polymerizing isobutene using an inert diluent and a halogen-containing Lewis acid as a catalyst, wherein the isobutene in the form of droplets is contacted with the Lewis acid in a polymerization apparatus.

Method for producing polyisobutene

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Neustadt, Germany

Martin Karches