Bayer Aktiengesellschaft

Bayer Materialscience Ag

Markus Weisbeck

Gerhard Wegener

Christoph Schild

Ernst-Ulrich Dorf

Georg Wiessmeier

Markus Dugal

Marie-Therese Heinen

Peter Vogtel

Herbert Dilcher

Ulrich Sch&uuml;lke

Bernhard L&uuml;cke

Jorg Schmitt

J&ouml;rg Schmitt

Martin St&uuml;rmann

Jörg Schmitt

Frank Zbrozek

Ernst Ulrich Dorf

The present invention provides a catalyst containing titanium in bonded form, non-crystalline silicon dioxide and at least one crystalline silicate phase which has a zeolite structure, wherein the non-crystalline silicon dioxide is applied to at least one of the crystalline silicate phases which have a zeolite structure and wherein at least one of the crystalline silicate phases which have a zeolite structure contains silicon-carbon bonds with which non-hydrolytically separable organic groups R are bonded to silicon. Furthermore, the present invention provides a process for preparing this catalyst and a process for producing an epoxide from a compound which contains a carbon-carbon double bond (preferably from propene) comprising reacting the compound which contains a carbon-carbon double bond with hydrogen peroxide in the presence of the catalyst according to the invention.

Catalyst

The present invention relates to noble metal-containing catalysts which are composed of at least one organic/inorganic hybrid material which is composed of at least one titanium component and at least one Si&#x2014;H group. The catalysts of the present invention have increased activity compared to known catalysts.

Catalysts which are based on organic-inorganic hybrid materials containing noble metals and titanium and which are used for selectively oxidizing hydrocarbons

The present invention provides hydro-oxidation catalysts for the oxidation of hydrocarbons, containing an organic-inorganic hybrid material as well as gold particles and/or silver particles, a process for the production thereof, and the use thereof as a catalyst.

The present invention relates to a process for preparing a composition containing gold and/or silver particles and an amorphous, organic/inorganic titanium/silicon mixed oxide, the compositions which can be prepared by this process and their use as catalysts for the selective oxidation of hydrocarbons.

Sol-gel hybrid materials containing precious metals as catalysts for partial oxidation of hydrocarbons

This invention relates to a process for the production of a composition containing gold and/or silver particles, mixed oxides containing titanium and silicon which have been surface-modified, to the compositions producible in this process and to the use thereof in processes for the selective oxidation of hydrocarbons in the presence of oxygen and a reducing agent. The catalytically active compositions exhibit constantly high selectivities and productivities.

Surface-modified mixed oxides containing precious metal and titanium, for the selective oxidation of hydrocarbons

The present invention relates to the continuous production of nano-scale precious metal particles on SiH-containing support materials, the compositions themselves, and the use of these precious metal-containing compositions as catalyst. The continuous process according to the invention includes impregnating support materials and, after thermal activation, drying the support materials by spraying or by fluidized bed technology leads to form precious metal-containing support compositions that are active in the catalysis of oxidation reactions. The catalytically active precious metal-containing support compositions exhibit high selectivities and productivities and have very long catalyst service lives without deactivation. The invention also relates to a process for the oxidation of hydrocarbons in the presence of oxygen, a reducing agent and the precious-metal containing support compositions of the present invention.

Continuous process for the synthesis of nano-scale precious metal particles

The invention relates to a method for oxidizing hydrocarbons with a hydrogen/oxygen mixture in the presence of a catalyst. The catalyst contains a) a support material which contains titanium and b) silver particles having an average particle size ranging from 0.3 to 100 nm.

Method for oxidizing hydrocarbons

A supported catalyst coated with gold particles is produced. This supported catalyst is used to oxidize unsaturated hydrocarbons in the gas phase with a hydrogen/oxygen mixture.

Method for the direct catalytic oxidation of unsaturated hydrocarbons in gaseous phase

The invention relates to an integrated process for the preparation of epoxidised olefins. In the first stage, dilute hydrogen peroxide solutions are prepared from the elements hydrogen and oxygen and are reacted in a subsequent liquid-phase epoxidation with olefin in the presence of titanium silicalite to form epoxidised olefins, and the solvents are returned to the H O process again.

Integrated method for producing epoxides from olefins

The present invention relates to supported catalysts which are composed of titanium oxide hydrates coated with nanoscale gold particles. The catalysts of the present invention have increased activity over known catalysts.

Growing community of inventors

Kö'ln, Germany

Markus Weisbeck