Clariant International Ltd

Clariant Produkte (deutschland) Gmbh

Sued-chemie IP Gmbh & Co. Kg

Clariant Produkte Gmbh

Other

Sud-chemie Ag

Linde Gmbh

Süd-chemie IP Gmbh & Co Kg

Clariant Corpoation

Nanoc Sdn. Bhd.

Gerhard Mestl

Alfred Gerhard Hagemeyer

Peter Scheck

Silvia Neumann

Klaus Wanninger

Carolin Fischer

Johannes Lercher

Maria Cruz Sanchez-Sanchez

Gabriele Donabauer

Roman Bobka

Peter Schinke

Julia Tseglakova

Daniel Melzer

Hans-Jörg Wölk

Werner Pitschi

Nadine Fromm

Jozsef Margitfalvi

Andras Tompos

Valery Sokolovskii

David M Lowe

Wolfgang Müller

Andreas Meiswinkel

Claus G Lugmair

Anthony F Volpe

Marvin Estenfelder

Mathieu Zellhuber

Martin Schubert

Frank Grossmann

Lajos Istvan Vegvari

Oliver Richter

Felix Schulz

Robert K Grasselli

Magdalena Pritzl

Inga Walzel

Robert Marx

Alfred Hagemeyer

Hongyi C Hou

Sebastian Boecklein

Robert Schlögl

Aaron Miller

Christian Gückel

Alice Kyriopoulos

Andreas Reitzmann

Anna Adler

Bastian Käding

Martin Kutscherauer

Rene Hausmann

Gabriele Bindseil

Sybille Ungar

Sarah Limbrunner

Anna Waldschuetz

David Lesser

Deepti Machiraju

Thomas Cotter

Susanne Roehrer

Martin Schoenfelder

Aaron B Miller

Bernadette Hofmann

Nina Rammel

Jr Anthony F Volpe

Robert K Grasseli

Bastian KÄDING

Anna Adler (Geb Waldschuetz)

The invention relates to a catalyst system for producing maleic anhydride by means of the catalytic oxidation of n-butane, comprising at least one reactor tube, which has two catalyst layers consisting of different catalyst particles, characterized in that the geometric surface area per catalyst particle is greater in the catalyst layer that is first in the gas flow direction than in the second catalyst layer. The invention further relates to a process for producing maleic anhydride by means of the catalytic oxidation of n-butane, wherein a mixture of oxygen and n-butane is fed through the catalyst system according to the invention and the at least one reactor tube is at elevated temperature.

Catalyst system for producing maleic anhydride by means of the catalytic oxidation of n-butane

A method for producing a target compound includes distributing a feed mixture containing ethane to multiple reaction tubes of a shell-and-tube reactor arranged in parallel, and subjecting to an oxidative catalytic conversion of the ethane in the reaction tubes. The catalytic reaction is carried out by means of catalysis zones with different activity arranged in series in the reaction tubes. One or more catalytically active materials and one or more catalytically inactive materials are provided in each of the catalysis zones. The different activity of the catalysis zones is effected by providing the one or more catalytically active materials having identical or essentially identical basic formulation, wherein the one or more catalytically active materials is or are prepared using different calcination intensities.

Process and system for preparing a target compound

The disclosure relates to a process for producing a VPO catalyst containing molybdenum and a vanadyl pyrophosphate phase, which comprises the steps: a) provision of a reaction mixture comprising a V(V) compound, a P(V) compound, an Mo compound, a reducing agent and a solvent, b) reduction of the V(V) compound by means of the reducing agent at least in parts to give vanadyl hydrogenphosphate in order to obtain an intermediate suspension, c) filtration of the intermediate suspension from step b) in order to obtain an intermediate, d) drying of the intermediate at a temperature of not more than 350&#xb0; C. in order to obtain a dried intermediate and e) activation of the dried intermediate at a temperature above 200&#xb0; C., characterized in that not more than 0.2% by weight of water, based on the weight of the reaction mixture, is present in step a) and no water is withdrawn during the reduction in step b). The disclosure further relates to a VPO catalyst which is able to be produced by the process of the disclosure and also a catalyst containing the molybdenum-containing vanadium-phosphorus mixed oxide.

Process for producing a VPO catalyst

A novel mixed oxide material is disclosed which comprises molybdenum, vanadium, tellurium and niobium and the use of the mixed oxide material as catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid and a process for producing the mixed oxide material.

Synthesis of a MoVNbTe catalyst having an increased specific surface and higher activity for the oxidative dehydrogenation of ethane to ethylene

A novel mixed oxide material is disclosed which contains molybdenum, vanadium, tellurium and niobium and the use of the molybdenum mixed oxide material as catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid and a process for producing the mixed oxide material.

Synthesis of a MoVNbTe catalyst having a reduced niobium and tellurium content and higher activity for the oxidative dehydrogenation of ethane

A novel coated catalyst having an outer shell which is composed of a catalyst material having high surface area and contains molybdenum, vanadium, tellurium and niobium, and the use of this catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid and also a process for producing the catalyst is disclosed.

Synthesis of a MoVNbTe shell catalyst for oxidative dehydrogenation of ethane to ethylene

A novel catalyst and process for producing a mixed oxide material containing molybdenum, vanadium, tellurium and niobium is disclosed. The material can be used as a catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid.

Synthesis of a moVNbTe catalyst from low-cost metal oxides

A simple, scalable, inexpensive, and reproducible method of selectively preparing the M1 phase of a MoVNbTe mixed oxide in a hydrothermal synthesis using tellurium dioxide is disclosed which can utilize inexpensive metal oxides as starting compounds.

Method for producing mixed oxide materials containing molybdenum

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins.

Composite material containing a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and SiO

A catalytic converter arrangement for producing phthalic anhydride by means of a gas phase oxidation of aromatic hydrocarbons, comprising a reactor with a gas inlet side for a reactant gas, a gas outlet side for a product gas, a first catalytic converter layer made of catalytic converter elements, and at least one second catalytic converter layer made of catalytic converter elements. The first catalytic converter layer is arranged on the gas inlet side, and the second catalytic converter layer is arranged downstream of the first catalytic converter layer in the gas flow direction. The catalytic converter elements have an outer layer of an active compound. The invention is characterized in that the active compound content in the first catalytic converter layer and/or in the second catalytic converter layer is below 7 wt. %, based on the total weight of the catalytic converter elements, and the ratio of the total surface of the active compound to the volume of the catalytic converter layer is preferably 10000 cm&#x2212;1 to 20000 cm&#x2212;1, in each catalytic converter layer.

Catalytic converter arrangement with optimized surface for producing phthalic anhydride

The invention relates to a catalyst arrangement for preparing phthalic anhydride by gas-phase oxidation of aromatic hydrocarbons, which comprises a reactor having a gas inlet end for a feed gas and a gas outlet end for a product gas and also a first catalyst zone made up of catalyst bodies and at least one second catalyst zone made up of catalyst bodies, where the first catalyst zone is arranged at the gas inlet end and the second catalyst zone is arranged downstream of the first catalyst zone in the gas flow direction and the length of the first catalyst zone in the gas flow direction is less than the length of the second catalyst zone in the gas flow direction, characterized in that the first catalyst zone has a higher gap content compared to the second catalyst zone.

Catalyst arrangement with optimized void fraction for the production of phthalic acid anhydride

The present invention relates to a porous catalyst support, consisting of a material comprising a natural sheet silicate, containing ZrOdispersed throughout the material. The present invention also relates to a method for the production of the catalyst support according to the invention and to a shell catalyst containing the catalyst support according to the invention and also the use of the catalyst according to the invention in particular for the production of vinyl acetate monomer (VAM).

Zirconium oxide-doped catalyst support, method for producing the same and catalyst containing a zirconium oxide-doped catalyst support

The present invention relates to a method for producing a supported catalyst, a catalyst which is obtainable using the method, and use thereof for the partial oxidation or ammoxidation of olefins, in particular for the oxidation of propene to acrolein, of isobutene to methacrolein, and/or the ammoxidation of propene to acrylonitrile. The method according to the invention includes the following steps: a) providing a solution in which precursor compounds of the catalytically active component are essentially completely dissolved in a suitable solvent; b) bringing the solution obtained in step a) into contact with a (chemically) inert, porous support having a specific surface of 1 to 500 m/g; c) heat treatment of the material obtained in step b), in which the precursor compounds of the catalytically active component are converted to their oxides.

Method for producing a catalyst for the partial oxidation/ammoxidation of olefins

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The present invention relates to a catalyst containing a vanadium-phosphorus oxide and an alkali metal, wherein the proportion by weight of alkali metal in the vanadium-phosphorus oxide is in the range from 10 to 400 ppm, based on the total weight of the vanadium-phosphorus oxide, a process for producing it and also the use of the catalyst for the gas-phase oxidation of hydrocarbons, in particular for preparing maleic anhydride.

Alkali metal-modified vanadium-phosphorus oxide (VPO) catalyst

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Munich, Germany

Gerhard Mestl