[ROGGAN, Jens Stefan, ROGGAN, Jens Stefan, MLECZKO, Leslaw, ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, GOTTFRIED, Michael, ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, GOTTFRIED, Michael, PECKERMANN, Ilja, ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, GOTTFRIED, Michael, PECKERMANN, Ilja, SCHUBERT, Stephan, ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, GOTTFRIED, Michael, PECKERMANN, Ilja, SCHUBERT, Stephan, BARTH, Ekkehard] {51368 Leverkusen;DE(DE)(DE)} A method for the reaction of a first compound with a second compound, wherein the first compound has a hazardous substance classification, in accordance with GHS, of GHS06 and can be obtained from the reaction of at least one first fluid precursor compound and one second fluid precursor compound, and wherein the second compound is capable of entering into a chemical reaction with the first compound, comprises the steps: (I) providing a liquid phase, which comprises the second compound, in a reactor with an upper end and a lower end as viewed in the direction of gravitational force; (II) providing a contact pipe (100, 110), which has an upper end and a lower end, in the reactor, wherein the lower end of the contact pipe dips into the liquid phase comprising the second compound and, in the contact pipe, there is provided a catalyst bed which is designed to catalyze the reaction of the first and second precursor compounds to form the first compound; (III) introducing the first and second precursor compounds through the contact pipe (100, 110), wherein first compound formed in the contact pipe emerges from the lower end of the contact pipe and comes into contact with the liquid phase comprising the second compound.

[MLECZKO, Leslaw, MLECZKO, Leslaw, WOLF, Aurel, MLECZKO, Leslaw, WOLF, Aurel, SCHELLEN, Ralph, MLECZKO, Leslaw, WOLF, Aurel, SCHELLEN, Ralph, METAXAS, Konstantinos, MLECZKO, Leslaw, WOLF, Aurel, SCHELLEN, Ralph, METAXAS, Konstantinos, ROGGAN, Stefan] {51368 Leverkusen;DE(DE)(DE)} The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyse the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.

[William Latta, Scott Vierstra, Matthew Targett, Volker Michele, Rainer Bellinghausen, Leslaw Mleczko, Heinrich Morhenn, Oliver Schlueter] US,NC,Mooresville;US,OH,Canal Winchester;CN,,Shanghai;DE,,Koeln;DE,,Odenthal;DE,,Dormagen;DE,,Koeln;DE,,Leverkusen; A cyclone reactor for producing a usable by-product as part of a recoverable slag layer, the reactor comprising a housing having an outer wall that defines a combustion chamber; an inlet configured to introduce a reactant into the reactor; a burner configured to combust the reactant in a flame zone near a central axis of the chamber; and an outlet configured to provide for the removal of the usable by-product from the housing; wherein the reactor is configured to combust a first portion of the reactant in an exothermic reaction in the flame zone; and wherein the reactor is configured to convert a second portion of the reactant in an endothermic reaction near the outer wall to produce the by-product as part of the slag layer.

[William Latta, Scott Vierstra, Matthew Targett, Volker Michele, Rainer Bellinghausen, Leslaw Mleczko, Heinrich Morhenn, Oliver Schlueter] US,NC,Charlotte; A method for producing a usable by-product in a cyclone reactor. The method comprises introducing a reactant into a housing of the reactor through an inlet; using a burner to combust a first portion of the reactant in an exothermic reaction provided in a flame zone near a center of the housing; consuming a second portion of the reactant in an endothermic reaction near an outer wall of the housing to produce the by-product as part of a slag layer; and removing the slag layer including the by-product though an outlet in the housing; wherein the endothermic reaction takes place at a temperature of at least 1600° C.

[Sebastian Falß, Leslaw Mleczko, Karl-Robert Boos, Sigurd Buchholz] DE DE,Leverkusen The present invention relates to a multistage stirred reactor, comprising a multiplicity of mutually adjacent reaction chambers and stirring elements for mixing the contents of at least one of the reaction chambers, wherein, between adjacent reaction chambers, there is in each case provided at least one opening that can be closed by means of closure means, such that in the open state there is a fluidic connection between the adjacent reaction chambers and in the closed state the adjacent reaction chambers are separated from one another. At least one of the closure means (300, 310, 320) is connected to an actuation rod (500, 510, 520) that is guided out of the stirred reactor. The actuation rod (500, 510, 520) can be moved back and forth between at least one first position and a second position, by rotation and/or displacement, wherein in the first position closure means (300, 310, 320) that are connected to the actuation rod (500, 510, 520) effect an open state of the opening assigned to them and in the second position closure means (300, 310, 320) that are connected to the actuation rod (500, 510, 520) effect a closed state of the opening assigned to them.

[Alexandra Groβe Böwing, Aurel Wolf, Kilian Tellmann, Leslaw Mleczko] DE,,Dormagen;DE,,Wülfrath;DE,,Frankfurt am Main;DE,,Dormagen; The invention relates to a method for producing diphenylcarbonate while using a catalyst composition comprising ionic fluids.

[Aurel Wolf, Leslaw Mleczko, Stephan Schubert, Oliver Felix-Karl Schlüter] DE,,Wülfrath;DE,,Dormagen;DE,,Leverkusen;DE,,Leverkusen; The present invention provides a process for producing chlorine by the catalytic gas phase oxidation of hydrogen chloride with oxygen, wherein the reaction is performed on at least two catalyst beds under adiabatic conditions, as well as a reactor system for performing the process.

[JENS STEFAN ROGGAN, LESLAW MLECZKO, KONSTANTINOS METAXAS, MICHAEL GOTTFRIED, IIJA PECKERMANN, STEPHAN SCHUBERT, EKKEHARD BARTH] DE DE,LEVERKUSEN A method of reacting a first compound with a second compound, wherein the first compound has a GHS hazard identification of GHS06 and is obtainable from the reaction of at least one first fluid precursor compound and one second fluid precursor compound and wherein the second compound is capable of a chemical reaction with the first compound is provided

[ROGGAN, Jens Stefan, MLECZKO, Leslaw, METAXAS, Konstantinos, GOTTFRIED, Michael, PECKERMANN, Ilja, SCHUBERT, Stephan, BARTH, Ekkehard] DE,51373 Leverkusen,Kaiser-Wilhelm-Allee 1;

[WOLF, Aurel, SCHLÜTER, Oliver Felix-Karl, MLECZKO, Leslaw, SCHUBERT, Stephan, KINTRUP, Jürgen] DE,51368 Leverkusen,;