Abstract: The present invention relates to a catalyst for oxidizing hydrocarbons with a hydrogen/oxygen mixture. The catalyst contains a) a support material containing titanium and b) silver particles having an average particle size of from 0.3 to 100 nm.

Abstract: The present invention relates to a process for the production of a dinitronaphthalene isomer mixture, in which naphthalene and/or 1-nitronaphthalene is reacted with nitric acid in the presence of a zeolite.

Abstract: The invention relates to shaped bodies containing organic-inorganic hybrid material in addition to gold and/or silver particles, to a method for the production thereof and to the use of the same as catalysts. The shaped-body catalysts are characterized by a longer service life than the original powder catalysts, in addition to a high selectivity and productivity. The inventive shaped-body catalysts also enable pressure losses to be kept to a negligible level in technically sophisticated reactors, for example fixed-bed reactors.

Abstract: 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.

Abstract: 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.

Abstract: A reactor and a process for carrying out parallel reactions on solids is described. The reactor comprises at least a sample holder block (1) with a multiplicity of reaction vessels (2a-2k), a heated support structure (3) and a cover (8, 9, 10) sealing all the reaction vessels (2a-2k). The cover (8, 9, 10) contains feed lines (4a-4k) and discharge lines (5a-5k) to each sample vessel (2a-2k). The feed lines (4a-4k) and/or the discharge lines (5a-5k) are joined together by means of feed and discharge channels (7, 8) running crosswise to said lines. The feed and discharge channels (7, 8) end in main fluid feed lines (11) and discharge lines (12).

Abstract: 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.

Abstract: 1,4-diaminonaphthalene and/or 1,5-diaminonaphthalene are produced by (a) reacting naphthalene with a halogen, (b) optionally, separating 1,4-dihalogen naphthalene or 1,5-dihalogen naphthalene from the mixture from step (a), and (c) reacting the mixture from step (a) or the 1,4-dihalogen naphthalene or the 1,5-dihalogen naphthalene from step (b) with ammonia and/or an organic amine in the presence of a catalyst.

Abstract: The present invention relates to a process for the catalytic partial oxidation of hydrocarbons. This process comprises passing a reaction mixture comprising hydrocarbons, oxygen, and at least one reducing agent, through a catalyst-containing layer to partially oxidize the hydrocarbon, and adsorbing the partially oxidized hydrocarbon in a downstream adsorbent-containing layer.

Abstract: The invention provides a process for the catalytic partial oxidation of hydrocarbons, comprising passing a reaction mixture comprising the hydrocarbons, oxygen and at least one reducing agent through a layer which contains a catalyst, and then through a layer (located downstream of the catalyst-containing layer) which contains an aqueous absorption agent, in which the partially oxidized hydrocarbons are absorbed quantitatively.

Abstract: 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.

Abstract: 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 H2O2 process again.

Abstract: 1,4-diaminonaphthalene and/or 1,5-diaminonaphthalene are produced by (a) reacting naphthalene with a halogen, (b) optionally, separating 1,4-dihalogen naphthalene or 1,5-dihalogen naphthalene from the mixture from step (a), and (c) reacting the mixture from step (a) or the 1,4-dihalogen naphthalene or the 1,5-dihalogen naphthalene from step (b) with ammonia and/or an organic amine in the presence of a catalyst.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a catalytic gas phase process for the preparation of epoxides from unsaturated hydrocarbons by oxidation with molecular oxygen in the presence of carbon monoxide and nanoscale gold particles.

Abstract: Raney nickel catalysts obtainable by a process in which the melt of an alloy comprising 50 to 94 wt. % aluminum, 10 to 50 wt. % nickel, 0 to 20 wt. % iron, 0 to 15 wt. % cerium, cerium mixed metal, vanadium, niobium, tantalum, chromium, molybdenum or manganese and, optionally, further glass-forming elements is allowed to solidify rapidly with a cooling rate of >104 K/s and the rapidly solidified alloy is then subjected to a treatment with organic or inorganic bases are described. A process for the preparation of the Raney nickel catalysts mentioned and their use in the hydrogenation of organic compounds, in particular aromatic nitro compounds, are furthermore described.

Abstract: A process is described for obtaining pure isocyanate isomers from a mixture of isocyanate isomers by suspension crystallization and the isolation of isomerically pure crystals, which is characterized in that, prior to the isolation of the crystals, 5 to 40% by weight of the crystals produced are remelted while simultaneously increasing the temperature of the crystal slurry by 4.5 to 9° C.

Abstract: A process for producing a mixture of isomers of dinitronaphthalene by nitration of nitronaphthalene, in which nitronaphthalene, optionally in an inert organic solvent, is reacted with 1 to 20 times the equivalent quantity, based on the quantity of nitronaphthalene, of 50% to 100% nitric acid in the presence of a solid, perfluorinated, strongly acidic ion exchanger.

Abstract: The instant invention is directed to diisocyanates based on diphenylmethane which may be methyl-substituted and which are characterized in particular by isocyanate groups in the 3,4'- and optionally in the 3,2'-position. The instant invention is also directed to a number of independent processes for their production and to their use as isocyanate component in the production of polyurethanes.