Evonik Degussa Gmbh

Evonik Oxeno Gmbh

B.r.a.i.n. Biotechnology Research and Information Network Ag

Cyplus Gmbh

Cvplus Gmbh

Andrea Christiansen

Dirk Fridag

Robert Franke

Dieter Hess

Katrin Marie Dyballa

Bernd Hannebauer

Guido Meurer

Burkard Kreidler

Xin Lu

Esther Gabor

Martin Langer

Benedikt Hoffmann

Peter Wasserscheid

Detlef Selent

Armin Börner

Yvonne Tiffert

Stephen Gos

Armin Boerner

Bart Hamers

Nicole Brausch

Marc Becker

Bernhard Schemmer

Bjoern Wechsler

Marco Haumann

Michael Jakuttis

Doris Neumann

Sebastian Werner

Andreas Schoenweiz

Dieter Vogt

Laura Bini

Michele Janssen

Bendikt Hoffmann

Burkhard Kreidler

Michèle Janssen

The invention provides an assay for identifying a bacterium capable of binding elemental heavy metal, comprising the following steps: cultivating a test bacterium in a suitable first culture medium; immersing at least a surface portion of a test tool into the first culture medium for a second predetermined period of time, said surface portion being coated by elemental heavy metal, respectively; removing said test tool from said first culture medium and optionally rinsing the test tool; contacting a second culture medium with the surface portion coated by elemental heavy metal of said test tool removed in the previous step; and identifying the test bacterium as being capable of binding elemental heavy metal from growth of the test bacterium in said second culture medium.

Biological ore processing for the isolation of heavy metals

The invention provides a process of isolating or enriching a heavy metal present in a liquid medium. The process comprising the following steps: (a) incubating a suspension containing (i) particulate scrap metal, household waste and/or industrial waste containing a heavy metal in elemental form and (ii) biomass comprising a bacterium, or a combination of two or more bacteria, capable of binding the heavy metal; (b) separating the biomass having bound heavy metal from the suspension of step (a); and (c) isolating the heavy metal from the biomass separated in step (b).

Biological processing of scrap metal, household waste and/or industrial waste for the isolation of heavy metals

The invention provides a process of isolating or enriching a heavy metal present in a suspension containing a particulate mineral ore containing a heavy metal, comprising the following steps: incubating a suspension containing (i) a particulate mineral ore containing a heavy metal and (ii) biomass comprising a bacterium capable of binding the heavy metal; separating the biomass having bound heavy metal from the suspension of the previous step; and isolating the heavy metal from the biomass separated in the previous step.

An unsymmetric bisphosphite of the formula (1) a process for preparation thereof, a reaction thereof with metals to give mixtures containing complexes of the unsymmetric bisphosphite and the metal, and a use thereof as a catalytically active composition in hydroformylation reactions, where the hydroformylation-active composition contains, as well as the complex of metal and unsymmetric bisphosphite, unbound bisphosphite and at least one further component.

Unsymmetric bisphosphite

The invention relates to mixtures of constitutional isomer bisphosphites of formulae (1a) and (2a), to a method for the production thereof, to the reaction thereof with metals to form mixtures containing complex compounds of the constitutional isomer bisphosphites of formulae (1a) and (2a) and the metal, and to the use thereof as a catalytically active composition in hydroformylation reactions. Said hydroformylactically active compositions comprises, in addition to the complex compounds of metal and the constitutional isomer bisphosphites of formulae (1a) and (2a), non-bound bisphosphites of the constitutional isomer bisphosphites of formulae (1a) and (2a) and at least one additional component.

Mixtures of constitutionally isomeric bisphosphites

The invention relates to a mixture of unsymmetric bisphosphites, to a process for preparation thereof, to the reaction thereof with metals to give mixtures comprising complexes of the bisphosphites and the metal, and to the use thereof as a catalytically active composition in hydroformylation reactions, and also to the hydroformylation reaction itself.

Mixture of different asymmetrical bisophosphites and use thereof as a catalyst mixture in hydroformylation

The subject matter of the present invention is a plurality of products and the use thereof as a catalytically active composition in a method for producing aldehydes.

Organophosphorus compounds based on anthracenetriol

The invention relates to a mixture of bisphosphites, to a process for preparation thereof, and to the reaction thereof with metals to give mixtures comprising complexes of the constitutionally isomeric bisphosphites and the metal, and to the use thereof as a catalytically active composition in hydroformylation reactions, and also to the hydroformylation reaction itself.

Mixture of bisphosphites and use thereof as a catalyst mixture in hydroformylation

The invention relates to a process for producing 6,6'-[(3,3&#x2032;-di-tert-butyl-5,5&#x2032;-dimethoxy-1,1&#x2032;-biphenyl-2,2&#x2032;diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content. 

Method for the preparation of biphephos

The present invention provides a composition comprising: a) an inert porous support material, b) an ionic liquid, c) a metal selected from group 9 of the Periodic Table of the Elements, d) a phosphorus-containing organic ligand, e) at least one organic amine. The present invention further provides a process for hydroformylating olefin-containing hydrocarbon mixtures to aldehydes with addition of the inventive composition as a catalytically active composition, wherein: a) the water content of the olefin-containing hydrocarbon mixture is adjusted to not more than 20 ppm, b) the content of polyunsaturated compounds in the olefin-containing hydrocarbon mixture is adjusted to not more than 3000 ppm, c) a molar ratio of organic amines according to claims-to phosphorus-containing organic ligands according to claims-of at least 4:1 is established, d) a molar ratio of phosphorus-containing organic ligands according to claims-to rhodium of at least 10:1 is established.

Use of supported ionic liquid phase (SILP) catalyst systems in the hydroformylation of olefin-containing mixtures to aldehyde mixtures with a high content of aldehydes unbranched in the 2 position

The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.

Organophosphorus compounds based on tetraphenol (TP)-substituted structures

Growing community of inventors

Rostock, Germany

Andrea Christiansen