Basf Aktiengesellschaft

Basf Aktiengellsellschaft

Basf Se Corporation

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Heiko Arnold

Andreas Tenten

Hartmut Hibst

Jochen Petzoldt

Klaus Ebel

Ulrich Hammon

Otto Machhammer

Klaus Harth

Till Gerlach

Harald Jachow

Raimund Felder

Frank Funke

Klaus Joachim Müller-Engel

Hans-Peter Neumann

Hans-Georg Göbbel

Susanne Haupt

Klaus Joachim Mueller-Engel

Martin Dieterle

Ekkehard Schwab

Gerd Kaibel

Christian Walsdorff

Frank Haese

Kirsten Burkart

Claus Hechler

Gerhard Cox

Frieder Borgmeier

Hans-Georg Goebbel

Hartwig Fuchs

Michael Bender

Klaus Joachim M&uuml;ller-Engel

Lisa Lobree

Lukas Schulz

Reinhard Körner

Kazuhiko Amakawa

Axel Salden

Silke Berndt

Hans-Georg G&ouml;bbel

Guenter Wegner

Wolfgang Juergen Poepel

Peter Münster

Günter Wegner

Wolfgang Jürgen PÖPEL

A process for preparing annular unsupported catalysts by thermally treating annular shaped unsupported catalyst precursor bodies, wherein the side crushing strength of the annular shaped unsupported catalyst precursor bodies is &#x2267;12 N and &#x2266;23 N; such precursor bodies per se; annular unsupported catalysts having a specific pore structure; and a method of using such annular unsupported catalysts for the catalytic partial oxidative preparation in the gas phase of (meth)acrolein.

Preparation of annular unsupported catalysts

In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.

Thermal treatment of the precursor material of a catalytically active material

For a process for the catalytic conversion of furl for removing oxides of nitrogen from exhaust gases of internal combustion engines, in which fuel and a part-stream of the exhaust gas or of the intake air are converted in a converter, the fuel and the part-stream of the exhaust gas or of the intake air are fed separately from one another into the converter and the fuel is vaporized in the converter. A converter for the catalytic conversion of fuel, comprising a vaporization space and a conversion space connected thereto is furthermore described, the vaporization space having separate feeds for exhaust gas or intake air and fuel, the conversion space having a catalyst for the catalytic conversion of fuel and the vaporization space and the conversion space being connected to one another so that heat transport from the conversion space into the vaporization space is possible.

Catalytic conversion of fuel and converter therefor

The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.

Heterogenically catalysed gas-phase partial oxidation method for precursor compounds of (meth)acrylic acid

The present invention relates to a process for isomerizing reactant allyl alcohols to product allyl alcohols in the presence of a catalyst, wherein the reactant allyl alcohol is rearranged to product allyl alcohol in semicontinuous or continuous mode in a catalyst-containing suitable reactor. In particular, the process according to the invention is used to prepare linalool from Geraniol and/or nerol.

Method for isomerizing allyl alcohols

Coated catalysts which are suitable for the gas-phase catalytic oxidation of propene to acrolein are prepared by a process in which rings are used as supports and water is used as a binder.

Method for producing an annular shell catalyst and use thereof for producing acrolein

The present invention relates to a process for the preparation of iron-doped ruthenium catalysts supported on carbon, and their use for the selective liquid phase hydrogenation of carbonyl compounds to give the corresponding alcohols, in particular for the hydrogenation of citral to give geraniol or nerol or of citronellal to give citronellol.

Preparation of ruthenium/iron catalysts supported on carbon

A process for preparing (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound over a fresh fixed catalyst bed, in which the process is started up at a reduced hourly space velocity of charging gas mixture on the fixed catalyst bed.

Preparation of (meth)acrolein and/or (meth)acrylic acid

A process is described for selectively hydrogenating citronellal to citronellol in which a liquid phase, in which the citronellal is dissolved and particles of a catalyst are suspended which is capable of preferentially hydrogenating carbon-oxygen double bonds over carbon&#x2014;carbon double bonds, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.

Method for continuous hydrogenation of citronellal to form citronellol

A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with a high propene loading, in a first reaction stage, over a first fixed-bed catalyst which is housed in two successive reaction zones A, B, the reaction zone B being kept at a higher temperature than the reaction zone A, and the acrolein-containing product gas mixture of the first reaction stage is then oxidized in a second reaction stage, with a high acrolein loading, over a second fixed-bed catalyst which is housed in two successive reaction zones C, D, the reaction zone D being kept at a higher temperature than the reaction zone C.

Method for the catalytic gas phase oxidation of propene into acrylic acid

Multimetal oxide materials containing molybdenum, vanadium, copper and antimony and one or more specific other metals and having a multicomponent structure are used for the gas-phase catalytic oxidative preparation of acrylic acid from acrolein.

Multimetal oxide materials

The present invention relates to a continuous process for the selective hydrogenation of olefinically unsaturated carbonyl compounds to give unsaturated alcohols in particular of citral to give a mixture of geraniol and nerol, in a reactor containing a liquid phase, in which at least one catalyst is suspended, and which can additionally contain a gas phase, wherein the liquid phase and, if present, the gas phase are passed through a device in the reactor having openings or channels.

Selective hydrogenation of olefinically unsaturated carbonyl compounds

A catalyst suitable for the gas-phase oxidation of organic compounds to &#x3b1;,&#x3b2;-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.

Method for producing a multi metal oxide catalyst, method for producing unsaturated aldehydes and/or carboxylic acids and band calcination device

The invention relates to a method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane on a multi-metal oxide mass, said mass containing the elements Mo, V, Te and/or Sb and having a specific X-ray diffractogram.

Method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane

Multimetal oxide materials containing molybdenum, vanadium, antimony, one or more of the elements W, Nb, Ta, Cr and Ce and nickel and, if required, one or more of the elements Cu, Zn, Co, Fe, Cd, Mn, Mg, Ca, Sr and Ba and having a 2-component structure are used for the gas-phase catalytic oxidative preparation of acrylic acid.

Multi-metal oxide materials with a two-phase structure

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Mannheim, Germany

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