Abstract:
The present invention relates to a catalyst for the conversion of oxygenates to olefins, the catalyst containing one or more zeolites of an MFI-, MEL- and/or MWW-type structure and particles of one or more metal oxides, wherein the one or more zeolites of the MFI-, MEL- and/or MWW-type structure contain one or more alkaline earth metals, and the particles of the one or more metal oxides contain phosphorus, the phosphorus being at least partially present as an oxide, and the one or more alkaline earth metals being selected from the group consisting of Mg, Ca, Sr, Ba and combinations of two or more of these elements. The invention also relates to the production and use of said catalyst and to a method for the conversion of oxygenates to olefins using the catalyst.
Abstract:
The present invention relates to a method for the conversion of oxygenates to olefins, comprising the steps of (1) providing a gas stream that contains one or more ethers; and (2) contacting the gas stream provided in (1) with a catalyst; the catalyst comprising a carrier substrate and a layer applied to the substrate, wherein the layer contains one or more zeolites of an MFI-, MEL- and/or MWW-type structure.
Abstract:
The invention relates to a method for producing aromatic amines by the catalytic hydrogenation of the corresponding aromatic nitro compound, characterized by using a copper-containing catalyst with a SiO2-containing carrier, the SiO2 being produced by wet grinding and subsequent spray drying.
Abstract:
The invention relates to a catalyst which contains one or more of the elements selected from the group consisting of cobalt, nickel and copper, the catalyst being a structured monolith. The invention is characterized in that the catalyst contains one or more elements selected from the group including alkali metals, alkaline earth metals and rare earth metals. The invention further relates to methods for producing the catalyst according to the invention and to the use of the catalyst in a method for the hydrogenation of organic substances, especially for the hydrogenation of nitriles.
Abstract:
The present invention relates to the oxidative coupling of methane to higher alkanes and alkenes, wherein the oxygen is fed into the reaction zone through a gas-tight, mixed transmitting membrane. The oxidative coupling is catalytic, wherein the gas-tight membrane can serve as a catalyst, but a catalyst active in the oxidative coupling of methane can also be used.
Abstract:
Method for producing olefins through reaction of carbon monoxide with hydrogen in the presence of an iron-containing heterogeneous catalyst, characterized in that the catalyst used comprises carbonyl iron powder with spherical primary particles.
Abstract:
The present invention relates to a catalyst for the conversion of oxygenates to olefins, comprising a carrier substrate and a layer applied to the substrate, the layer containing one or more zeolites of an MFI-, MEL- and/or MWW-type structure, wherein the one or more zeolites contain one or more alkaline earth metals. The invention also relates to the production and use of said catalyst and to a method for the conversion of oxygenates to olefins using the catalyst.
Abstract:
The invention relates to a catalyst for electro-chemical applications comprising an alloy of platinum and a transition metal, wherein the transition metal has an absorption edge similar to the absorption edge of the transition metal in oxidic state, measured with x-ray absorption near-edge spectroscopy (XANES) wherein the measurements are performed in concentrated H3PO4 electrolyte. The invention further relates to a process for an oxygen reduction reaction using the catalyst as electrocatalyst.
Abstract translation:本发明涉及一种用于电化学应用的催化剂,其包括铂和过渡金属的合金,其中过渡金属具有类似于氧化态的过渡金属的吸收边缘的吸收边缘,其用x射线吸收近 - 边缘光谱(XANES),其中测量在浓H 3 PO 4电解质中进行。 本发明还涉及使用该催化剂作为电催化剂的氧还原反应方法。
Abstract:
The invention relates to a method for producing synthesis gas comprising the steps of: A) forming synthesis gas by gasifying organic substances, B) converting the synthesis gas from step A), and C) possibly purifying the converted synthesis gas from step B), wherein at least one volatile transition metal compound is added to the method in at least one of the steps A) and B).
Abstract:
The present invention relates to a catalyst bed comprising a first catalyst layer and a second catalyst layer, wherein the first catalyst layer comprises a first catalyst or precursor thereof active or activatable at a temperature below 340°C; and the second catalyst layer comprises a second catalyst precursor, wherein the second catalyst precursor comprises nickel in Ni(ll) form and is activatable to a second catalyst comprising nickel in Ni(0) form at a temperature above 360°C, wherein the second catalyst has an average lateral compression strength after 500 h at a temperature of 650°C of at least 30 N.