Basf Aktiengesellschaft

Basf Se Corporation

Basf Akiengesellschaft

Klaus Joachim Müller-Engel

Wolfgang Fischer

Martin Dieterle

Jochen Petzoldt

Ulrich Hammon

Götz-Peter Schindler

Otto Machhammer

Frank Rosowski

Volker Schliephake

Hans Martan

Jürgen Schröder

Frieder Borgmeier

Hartmut Hibst

Rocco Paciello

Heiko Arnold

Christoph Adami

Signe Unverricht

Gerhard Nestler

Gerhard Cox

Ulrich Cremer

Peter Zehner

Sylke Haremza

Klaus Harth

Holger Borchert

Claus Hechler

Dieter Baumann

Andreas Tenten

Christian Walsdorff

Eberhard Fuchs

Wilhelm Ruppel

Jörg Heilek

Bernd Eck

Andreas Raichle

Jens Scheidel

Goetz-Peter Schindler

Cornelia Katharina Dobner

Joerg Heilek

Joachim Thiel

Armin Diefenbacher

Andrey Karpov

Hagen Wilmer

Hermann Petersen

Stefan Altwasser

Catharina Klanner

Friedrich-Georg Martin

Wolfgang Gerlinger

Josef Macht

Marco Hartmann

Gunter Lipowsky

Volker Diehl

Catharina Horstmann

Thorsten Friese

Ulrich Rauh

Steffen Rissel

Peter Zurowski

Sabine Huber

Till Blum

Raimund Felder

Knut Eger

Wolfgang Schneider

Cathrin Alexandra Welker-Nieuwoudt

Christian Raith

Tsung-Chieh Cheng

Peter Schlemmer

Michael Blechschmitt

Silke Berndt

Marek Pazicky

Karl-Heinrich Klappert

Rolf-Dieter Becher

Ulrich Jäger

Ernst Lang

Stefanie Herzog

Klaus Bott

Wolfgang Gunkel

Jens Uwe Faust

Ralf Streibert

Horst Strahberger

Jochen Meschke

Carl-Ludwig Krüger

Klaus Lehnert

Raphael Heinrich Brand

Hans-Jürgen Bassler

Frank Höfer

Dirk Litters

Imke Britta Müller

Wolfgang Jürgen PÖPEL

A process for producing geometric shaped catalyst bodies K whose active material is a multielement oxide of stoichiometry[BiWO][MoZZFeZZZO],in which a finely divided oxide BiWOwith the particle size dand, formed from element sources, a finely divided intimate mixture of stoichiometry MoZZFeZZZwith the particle size dare mixed in a ratio of a:1, this mixture is used to form shaped bodies and these are treated thermally, where (d)&#xb7;(d)&#xb7;(a)&#x2267;820.

Process for producing geometric shaped catalyst bodies

Mo-, Bi- and Fe-comprising multimetal oxide compositions of the general stoichiometry I,MoBiCoFeKSiO&#x2003;&#x2003;(I),

Mo-, Bi- and Fe-comprising multimetal oxide compositions

A process for long-term operation of a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated, in which a reaction gas mixture stream comprising the hydrocarbon to be dehydrogenated in a molar starting amount KW is conducted through an overall catalyst bed comprising the total amount M of dehydrogenation catalyst and the deactivation of the overall catalyst bed is counteracted in such a way that, with increasing operating time, the contribution to the conversion in the first third of the total amount M of dehydrogenation catalyst in flow direction decreases, the contribution to the conversion in the last third of the total amount M of dehydrogenation catalyst in flow direction increases, and the contribution to the conversion in the second third of the total amount M of dehydrogenation catalyst in flow direction passes through a maximum.

Process for long-term operation of a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated

A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions.

Process for charging a longitudinal section of a catalyst tube

A process for regenerating a catalyst bed deactivated in the course of a heterogeneously catalyzed partial dehydrogenation of a hydrocarbon, in which a gas comprising molecular oxygen is conducted at elevated temperature through the deactivated catalyst bed and, in the course of the regeneration, the content of molecular oxygen in the regeneration gas is increased repeatedly and the increase in the carbon oxide content of the regeneration gas as it flows through the deactivated catalyst bed is restricted to values of &#x2266;5% by volume.

Process for regenerating a catalyst bed deactivated in the course of a heterogeneously catalyzed partial dehydrogenation of a hydrocarbon

A process for preparing a multielement oxide composition comprising the element iron in oxidic form, in which the source of the elemental constituent of iron used is an aqueous iron nitrate solution whose preparation comprises the melting of a solid hydrate of iron nitrate.

Process for preparing a multielement oxide composition comprising the element iron in oxidic form

A process for continuously removing a target product X in the form of fine crystals from a liquid phase P comprising the target product X and constituents other than the target product X by cooling suspension crystallization in the secondary chamber, into which the liquid phase P flows continuously, of an indirect heat exchanger with simultaneous continuous flow of a coolant through the primary chamber of the indirect heat exchanger and continuous withdrawal of a crystal suspension S having a degree of crystallization Y from the secondary chamber, in which the degree of crystallization Y is adjusted on the basis of a heat balance conducted continuously with the aid of a process computer.

Process for continuously removing a target product X in the form of fine crystals

A process for storing a monomer phase which is liquid under the conditions of storage and comprises methacrylic monomers to an extent of &#x2267;95% by weight and has been obtained by condensation out of a gaseous phase or by melting a crystalline phase, in a storage vessel, in which polymer of the monomer present in dissolved form in the liquid monomer phase is removed therefrom on the route from its generation into the storage vessel, and also a process for withdrawing liquid monomer phase from the storage vessel in which polymer of the monomer present in dissolved form in the monomer phase is likewise removed.

Process for storing a monomer phase which is liquid under the conditions of storage

A process for removing methacrylic acid from liquid phase P comprising acrylic acid as a main constituent and target product, and methacrylic acid as a secondary component in which the removal is effected by crystallization, the acrylic acid accumulating in the crystals formed and the methacrylic acid in the remaining mother liquor.

Process for removing methacrylic acid from liquid phase comprising acrylic acid as a main constituent and target product, and methacrylic acid as a secondary component

A process for preparing acrolein, or acrylic acid or a mixture thereof as a target product from propane, in which propane is partially dehydrogenated under heterogeneous catalysis in a reaction zone A, molecular hydrogen thus formed is incinerated partly to water and the product gas A thus formed in reaction zone A is used without secondary component removal to charge a reaction zone B in which propylene present in product gas A is partially oxidized to the target product. From the product gas B formed in reaction zone B, the target product is removed and the residual gas I remaining after an aftertreatment comprising a COscrubbing and a partial discharge thereof is recycled into reaction zone A.

Process for preparing acrolein or acrylic acid or a mixture thereof from propane

In a process for preparing at least one partial oxidation and/or ammoxidation product of propylene, the propylene is obtained from crude propane by dehydrogenating and subjected in the presence of unconverted propane as a constituent of a gas mixture 2 which comprises a total C-hydrocarbon content of &#x2266;3% by volume to a heterogeneously catalyzed gas phase partial oxidation and/or partial gas phase ammoxidation.

Preparation of at least one partial oxidation and/or ammoxidation product of propylene

Process for preparing at least one partial oxidation and/or ammoxidation product of propylene, in which the propylene is produced from crude propane by dehydrogenation and is subjected to a heterogeneously catalyzed gas-phase partial oxidation and/or partial gas-phase ammoxidation in the presence of unreacted propane as constituent of a gas mixture 2 containing &#x3c;1% by volume of 1-butene.

Process for operating a continuous heterogeneously catalyzed gas phase partial oxidation of at least one organic compound using compressed air as the oxygen source which is filtered before its compression.

Operation of a continuous heterogeneously catalyzed gas phase partial oxidation of at least one organic compound

A process for the heterogeneously catalyzed gas-phase partial oxidation of an organic compound over a fixed catalyst bed present in a fixed-bed reactor having a plurality of catalyst tubes, in which the reduction of the quality of the catalyst load with increasing duration of operation is restored by a partial catalyst change, is described.

Heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound

In a process for the purification of a crude acrylic acid melt, the crude acrylic acid melt is converted, under the action of low temperatures, into a crude acrylic acid suspension consisting of acrylic acid crystals and residual melt, and the acrylic acid crystals of the crude acrylic acid suspension are freed from remaining residual melt in a wash column, the production of the acrylic acid crystals of the crude acrylic acid suspension being carried out in the presence of water, the wash column being a wash column with forced transport of the acrylic acid crystals and the wash liquid used being the melt of acrylic acid crystals purified in the wash column.

Method for the purification of a crude acrylic acid melt

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Stutensee, Germany

Klaus Joachim Müller-Engel