Clariant Produkte (deutschland) Gmbh

Clariant International Ltd

Sud-chemie Ag

Sued-chemie IP Gmbh & Co. Kg

Other

Linde Gmbh

Süd-chemie IP Gmbh & Co Kg

Clariant Produkte Gmbh

Peter Scheck

Gerhard Mestl

Alfred Gerhard Hagemeyer

Carolin Fischer

Roman Bobka

Alice Kyriopoulos

Wolfgang Müller

Andreas Meiswinkel

Klaus Wanninger

Mathieu Zellhuber

Martin Schubert

Alfred Hagemeyer

Karl-Heinz Hable

Rudolf Kerscher

Ernst Haberkorn

Martin Schoenfelder

Sybille Ungar

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 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 invention relates to a method for producing a shell catalyst that is suitable for producing vinyl acetate monomer (VAM). The invention further relates to a shell catalyst that is obtainable by the method according to the invention and to the use of the shell catalyst according to the invention for producing VAM.

Post-gilding of PD-AU-coated shell catalysts

A method for producing a shell catalyst which comprises, in the outer shell, one or more of the following metals: Pd, Pt, Ag and Au. Also the use of the shell catalyst produced using the method according to the invention for the production of vinyl acetate monomer, in the hydrogenation of hydrocarbons, in particular the selective hydrogenation of polyunsaturated hydrocarbon compounds, or in the oxidation of alcohols to ketones/aldehydes/carboxylic acids.

Method for producing a metal-containing shell catalyst without intermediate calcining

An open-pore catalyst support comprising a material that comprises a natural sheet silicate and ZrO. In order to provide a catalyst support, by means of which alkenyl acetate catalysts can be prepared which are characterized by a high level of alkenyl acetate activity over a relatively long period, the catalyst support comprises a material that comprises a natural sheet silicate and ZrOin the tetragonal modification.

Catalyst support, process for its preparation and use

The present invention relates to a method for producing a shell catalyst that is suitable for producing vinyl acetate monomer (VAM). The present invention also relates to a shell catalyst that can be obtained by the method according to the invention as well as the use of the shell catalyst according to the invention for producing VAM.

Pre-gold-plating Pd-Au-coated shell catalysts

A method for producing a shell catalyst which is suitable for the synthesis of alkenyl carboxylic acid esters, in particular for producing vinyl acetate monomer (VAM) from ethylene or allyl acetate monomer from propylene by means of oxy-acetylation. Also, a shell catalyst that can be obtained by the method according to the invention, as well as the use of the shell catalyst produced using the method for producing alkenyl carboxylic acid esters, in particular vinyl acetate monomer (VAM) and allyl acetate monomer.

Copper-promoted shell catalyst for producing alkenyl carboxylic acid esters

The present invention relates to a method for producing a shell catalyst which comprises a porous shaped catalyst support body with an outer shell in which at least one catalytically active species is present. In order to provide a shell catalyst production method by means of which shell catalysts can be produced, said shell catalysts having, over a comparatively large region of their shell thickness, a substantially uniform concentration of catalytically active species and having a substantially uniform shell thickness, what is proposed is a method using an device which is designed to generate, by means of a process gas, a fluid bed of shaped catalyst support bodies in which the shaped catalyst support bodies circulate elliptically or toroidally, preferably toroidally, comprising the steps of charging the device with shaped catalyst support bodies and generating a shaped catalyst support body fluid bed by means of a process gas, the shaped catalyst support bodies circulating elliptically or toroidally in the fluid bed, preferably toroidally; impregnating an outer shell of the shaped catalyst support body with a catalytically active species or precursor thereof by spraying the shaped catalyst support bodies circulating elliptically or toroidally in the fluid bed with a solution comprising a catalytically active species or a precursor thereof; drying the shaped catalyst support bodies sprayed with the solution.

Method for producing a shell catalyst and corresponding shell catalyst

A shell catalyst for producing vinyl acetate monomer (VAM), comprising an oxidic porous catalyst support, formed as a shaped body, with an outer shell in which metallic Pd and Au are contained. To provide a shell catalyst for producing VAM which has a relatively high activity and can be obtained at relatively low cost, the catalyst support is doped with at least one oxide of an element selected from the group consisting of Li, P, Ca, V, Cr, Mn, Fe, Sr, Nb, Ta, W, La and the rare-earth metals.

Doped Pd/Au shell catalyst, method for producing the same and use thereof

A shell catalyst for the preparation of vinyl acetate monomer, comprising an oxidic porous catalyst support with an outer shell, containing metallic Pd and Au, wherein the framework structure of the porous catalyst support contains hafnium oxide units. This shell catalyst is suitable for the preparation of VAM and is characterized by a relatively high activity and VAM selectivity and maintains this activity and selectivity over relatively long service lives. Also, processes for the preparation and use of the shell catalyst.

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Gilching, Germany

Peter Scheck