Abstract:
The invention relates to a method for producing cyclohexane by isomerizing a hydrocarbon mixture (KG1) containing methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. A flow (S1) originating from a steam cracking process is used as a starting material. The hydrocarbon mixture (KG1) is obtained from said stream (S1) in a device for removing aromatics. The hydrocarbon mixture has a reduced aromatic content in comparison with the flow (S1). (KG1) can also be (nearly) free of aromatics. In dependence on the type and amount of the aromatics remaining in the hydrocarbon mixture (KG1), in particular if benzene is present, a hydrogenation of (KG1) additionally can be performed before the isomerization. Furthermore, additional purification steps can optionally be performed before or after the isomerization or hydrogenation in dependence on the presence of other components of (KG1). Preferably high-purity cyclohexane (in accordance with specifications) is isolated from the hydrocarbon mixture (KG2) arising during the isomerization, wherein the specifications are given, for example, by the use of the cyclohexane for the production of caprolactam known to the person skilled in the art.
Abstract:
The present invention relates to a catalyst for the epoxidation of alkenes, comprising silver, rhenium, cesium, lithium, tungsten and sulfur on a support. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene with oxygen in the presence of said catalyst.
Abstract:
A process for separating water from pyrolysis gasoline obtained from a steam cracking step uses a coalescer for the water separation. And a device comprises a coalescer for water separation from pyrolysis gasoline.
Abstract:
Procedimiento para la preparación de compuestos de alquilarilo mediante reacción de una mezcla de monoolefinas de C10-14 con un hidrocarburo aromático en presencia de un catalizador de alquilación para la formación de compuestos alquilo-aromáticos y dado el caso sulfonación y neutralización subsiguientes de los compuestos de alquilarilo obtenidos, caracterizado porque en promedio en las monoolefinas de C10-14 están presentes más del 0 % y hasta el 100 % de las ramificaciones de metilo en la cadena de carbono más larga y menos del 10 % de las ramificaciones de metilo se encuentran presentes en las posiciones 2, 3 y 4, calculado desde los extremos de cadena de la cadena de carbono más larga, y las monoolefinas de C10-14 tienen en cada caso máximo una ramificación de metilo.
Abstract:
Cuerpo moldeado que contiene un silicato de aluminio y un óxido de aluminio, caracterizado porque el cuerpomoldeado presenta una razón Al/Si molar en el intervalo de desde 10 hasta 35 y para poros con un diámetro mayorde 1 nm una distribución de poros al menos bimodal, correspondiendo el volumen de los poros del cuerpo moldeadocon un diámetro mayor de 10 nm a al menos el 40% del volumen de poro total del cuerpo moldeado.
Abstract:
Process for the continuous synthesis of methylamines by reaction of methanol and/or dimethyl ether with ammonia in the presence of a heterogeneous catalyst, wherein the catalyst used is a shaped body which comprises a microporous material and at least one organosilicon compound as binder and can be produced by a process comprising the steps (I) preparation of a mixture comprising the microporous material, the binder, a pasting agent and a solvent, (II) mixing and densification of the mixture, (III) shaping of the densified mixture to give a shaped body, (IV) drying of the shaped body and (V) calcination of the dried shaped body.
Abstract:
The present invention relates to porous metal organic frameworks comprising at least one at least bidentate organic compound L coordinated to at least one metal ion M, wherein L has at least one functional group G which bonds noncoordinatively to M and is selected from the group consisting of —SO3H and —PO3H2 and their analogues. The invention further provides processes for their preparation and also their use.
Abstract:
METHOD FOR PRODUCING ALKYLARYL COMPOUNDS AND ALKYARYL SULPHONATES The invention relates to a method for producing alkyaryl compounds, by reacting a mixture with an aromatic hydrocarbon, in the presence of an alkylation catalyst to give alkylaromatic compounds and, optionally, by subsequent sulphonation and neutralization of the obtained alkylaryl compounds. Said method is characterized in that, on average, in said more than 0% and up to 100% of methyl branches are located in the longest carbon chain and less than 50% of the methyl branches are located at the 2-, 3- and 4-position, counting from the ends of the longest carbon chain.