Abstract: The invention relates to a continuous method for producing acetylenes and syngas by partially oxidizing hydrocarbons with oxygen. A first feed stream (1) containing one or more hydrocarbons and a second feed stream (2) containing oxygen are —mixed in a ratio of the mass flows of the second feed stream (2) to the first feed stream (1) corresponding to an oxygen number of less than or equal to 0.31, said streams being heated separately from each other, —and fed to a combustion chamber (FR) via a burner block (BR), the partial oxidation of the hydrocarbons being carried out in said combustion chamber, —thereby obtaining a first cracked gas stream Ig. The invention is characterized in that —the first cracked gas stream Ig is precooled to a temperature ranging from 100 to 1000° C.

Abstract: Described is an iron-containing zeolite wherein the number of iron sites, based on the zeolite, is greater than the number of cationic positions in the zeolite. Also described is an iron-containing zeolite preparable by gas phase reaction with iron pentacarbonyl, said zeolite having a greater specific surface area than iron-containing zeolites prepared analogously by ion exchange and/or being more hydrothermally stable than iron-containing zeolites prepared analogously by ion exchange, or wherein the number of iron clusters larger than 10 nm is less than 15% by weight, based on the total amount of iron. Further described is a process for preparing an iron-containing zeolitic material, which comprises doping with iron by means of a gas phase reaction using iron pentacarbonyl. Further described is a process for catalytic reduction of nitrogen oxides using catalysts comprising said iron-containing zeolitic materials.

Abstract: A process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, is disclosed. The process consists of separately preheating and then mixing a first input stream containing a hydrocarbon and a second input stream containing oxygen, supplying the first input stream and the second input stream via a burner block to a firing space, quenching a cracking gas obtained to produce a process water stream and a product gas stream, cooling the product gas stream in a cooling column by direct heat exchange with cooling water, depleting soot in an electrostatic filter, combining all process water streams and passing through soot channels, subjecting the combined process water stream to a cleaning operation by partial vaporization in a one-stage flash vessel to obtain a cleaned process water stream, and recycling the cleaned process water stream into the process.

Abstract: The invention relates to a continuous method for producing acetylenes and syngas by partially oxidizing hydrocarbons with oxygen. A first feed stream (1) containing one or more hydrocarbons and a second feed stream (2) containing oxygen are mixed in a ratio of the mass flows of the second feed stream (2) to the first feed stream (1) corresponding to an oxygen number of less than or equal to 0.31, said streams being heated separately from each other, and fed to a combustion chamber (FR) via a burner block (BR), the partial oxidation of the hydrocarbons being carried out in said combustion chamber, thereby obtaining a first cracked gas stream Ig. The invention is characterized in that the first cracked gas stream Ig is precooled to a temperature ranging from 100 to 1000° C.

Abstract: The invention proposes a method for producing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, wherein a first feedstock (1), containing one or more hydrocarbons, and a second feedstock (2), containing oxygen, —are preheated separately from one another, —are fed via a burner block (B) to a combustion chamber (F), in which the partial oxidation of the hydrocarbons takes place, —obtaining a cracked gas, which is quenched by injecting a quench oil downstream of the furnace body at 200° C. to 250° C., wherein —a flow of product gas Ig is obtained, which —is cooled in a burner column (BK) with further quench oil, obtaining —a flow of product gas IIg cooled to 60° C. to 90° C., which —is guided into a final cooler (SK), in which a flow of product gas IIIg, cooled to 20° C. to 50° C.

Abstract: The invention proposes a method for producing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, wherein a first feedstock (1), containing one or more hydrocarbons, and a second feedstock (2), containing oxygen, are preheated separately from one another, are fed via a burner block (B) to a combustion chamber (F), in which the partial oxidation of the hydrocarbons takes place, obtaining a cracked gas, which is quenched by injecting a quench oil downstream of the furnace body at 200° C. to 250° C., wherein a flow of product gas Ig is obtained, which is cooled in a burner column (BK) with further quench oil, obtaining a flow of product gas IIg cooled to 60° C. to 90° C., which is guided into a final cooler (SK), in which a flow of product gas IIIg, cooled to 20° C. to 50° C.

Abstract: A process for partial oxidation of hydrocarbons in a reactor, in which a stream comprising the hydrocarbon and a stream comprising the oxygen are fed to the reactor, wherein both streams fed to the reactor are conducted within the reactor separately through in each case one or more spatially separate lines, these lines having turbulence generators in their interior, owing to which, as a result of the imposed deflection of the flow direction downstream of turbulence generators, a highly turbulent flow field forms, and the streams are then mixed in a mixing zone after exiting from the lines and then converted in a reaction zone.

Abstract: The invention relates to a method of production of catalyst particles, comprising platinum and tin and also at least one further element, selected from lanthanum and cesium, on zirconium dioxide as support, comprising the steps: preparation of one or more solutions containing precursor compounds of Pt, Sn and at least one further element of La or Cs and also ZrO2, converting the solution(s) to an aerosol, bringing the aerosol into a directly or indirectly heated pyrolysis zone, carrying out pyrolysis, and separation of the particles formed from the pyrolysis gas. Suitable precursor compounds comprise zirconium(IV) acetylacetonate, lanthanum(II) acetylacetonate and cesium acetate, hexamethyldisiloxane, tin 2-ethylhexanoate, platinum acetylacetonate, zirconium(IV) propylate in n-propanol and lanthanum(II) acetylacetonate. The invention also relates to the catalyst particles obtainable using the method according to the invention, and to the use thereof as dehydrogenation catalysts.

Abstract: A method of production of a catalyst that has 0.05-0.25 wt. % of precious metal, preferably for the oxidative dehydrogenation of olefinically unsaturated alcohols, comprising the following steps a) producing a D.C. plasma, b) introducing the metal and support material into the plasma, c) evaporating the metal and support material or “shattering” the solid bodies of metal and support material in the plasma, and reaction of the particles, d) cooling, so that very small particles of composite material are obtained, e) applying the composite material on the catalyst support proper, the correspondingly produced catalyst and use thereof.

Abstract: Described is a process for the production of mixed oxide particles. The process comprises providing a mixture comprising a solvent, one or more precursor compounds of ceria, one or more precursor compounds of zirconia, and one or more precursor compounds of one or more rare earth oxides other than ceria and/or one or more precursor compounds of yttria; forming an aerosol of the mixture; and pyrolyzing the aerosol of to obtain mixed oxide particles. The content of the rare earth oxides other than ceria and/or of yttria in the mixed oxide particles is comprised in the range of from 0.1 to 4.9 wt.-% based on the total weight of the rare earth oxides, yttria, and zirconia contained in the mixed oxide particles. Also describes are mixed oxide particles obtained from flame spray pyrolysis and to their use as an oxygen storage component, a catalyst, and/or as a catalyst support.

Abstract: A process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, is disclosed. The process consists of separately preheating and then mixing a first input stream containing a hydrocarbon and a second input stream containing oxygen, supplying the first input stream and the second input stream via a burner block to a firing space, quenching a cracking gas obtained to produce a process water stream and a product gas stream, cooling the product gas stream in a cooling column by direct heat exchange with cooling water, depleting soot in an electrostatic filter, combining all process water streams and passing through soot channels, subjecting the combined process water stream to a cleaning operation by partial vaporization in a one-stage flash vessel to obtain a cleaned process water stream, and recycling the cleaned process water stream into the process.

Abstract: The present invention provides a process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, by first separately preheating the starting gases comprising a hydrocarbon-containing stream and an oxygen-containing stream and then mixing them in a mixing zone and, after they have flowed through the burner block, reacting them in the firing space and then cooling the products rapidly, wherein the surface on the firing space side of the burner block is covered with a purge gas stream and this purge gas stream is introduced through the burner block by means of several bores, where the averaged ratio of effective surface area of the burner block to number of these bores in the burner block for the purge gas stream is within a range from 5 to 100 cm2.

Abstract: A process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, by first separately preheating the hydrocarbon gas and oxygen gas, and then reacting the gases and cooling the products rapidly. The reactor wall is blanketed with a purge gas stream, introduced through a plurality of feed lines. These feed lines deliver purge gas in a vector direction within a 10° angle of the main flow direction of the reactive gas stream. The purge gas is delivered at multiple stages relative to the main flow direction of the reactive gas stream, and the free cross section of the firing space available to the reactive gas stream, at the height of the feed lines of the purge gas stream, is approximately constant.

Abstract: In the process for hydrogenating butadiyne over a catalyst which comprises at least one platinum group metal on an inorganic metal oxide as a support, the hydrogenation is performed at a pressure in the range from 1 to 40 bar and a temperature in the range from 0 to 100° C., and from 0.05 to 5% by weight, based on the overall catalyst, of platinum group metal is present on the support.

Abstract: Described is an iron-containing zeolite wherein the number of iron sites, based on the zeolite, is greater than the number of cationic positions in the zeolite. Also described is an iron-containing zeolite preparable by gas phase reaction with iron pentacarbonyl, said zeolite having a greater specific surface area than iron-containing zeolites prepared analogously by ion exchange and/or being more hydrothermally stable than iron-containing zeolites prepared analogously by ion exchange, or wherein the number of iron clusters larger than 10 nm is less than 15% by weight, based on the total amount of iron. Further described is a process for preparing an iron-containing zeolitic material, which comprises doping with iron by means of a gas phase reaction using iron pentacarbonyl. Further described is a process for catalytic reduction of nitrogen oxides using catalysts comprising said iron-containing zeolitic materials.

Abstract: A method of production of a catalyst that has 0.05-0.25 wt. % of precious metal, preferably for the oxidative dehydrogenation of olefinically unsaturated alcohols, comprising the following steps a) producing a D.C. plasma, b) introducing the metal and support material into the plasma, c) evaporating the metal and support material or “shattering” the solid bodies of metal and support material in the plasma, and reaction of the particles, d) cooling, so that very small particles of composite material are obtained, e) applying the composite material on the catalyst support proper, the correspondingly produced catalyst and use thereof.

Abstract: Provided are methods and components related to preventing hydrocarbon residue buildup in engine components. Prevention is achieved using a coating of a mixed metal oxide. The mixed metal oxide comprises a mixture of at least two of Gd, Al, Ti, Ce, Pr, La, Y, Nd, and Mn. The coating can also contain amounts of precious metals, eg. Pt, Pd, Rh and/or Au.

Abstract: The invention relates to a method of production of catalyst particles, comprising platinum and tin and also at least one further element, selected from lanthanum and cesium, on zirconium dioxide as support, comprising the steps: preparation of one or more solutions containing precursor compounds of Pt, Sn and at least one further element of La or Cs and also ZrO2, converting the solution(s) to an aerosol, bringing the aerosol into a directly or indirectly heated pyrolysis zone, carrying out pyrolysis, and separation of the particles formed from the pyrolysis gas. Suitable precursor compounds comprise zirconium(IV) acetylacetonate, lanthanum(II) acetylacetonate and cesium acetate, hexamethyldisiloxane, tin 2-ethylhexanoate, platinum acetylacetonate, zirconium(IV) propylate in n-propanol and lanthanum(II) acetylacetonate. The invention also relates to the catalyst particles obtainable using the method according to the invention, and to the use thereof as dehydrogenation catalysts.

Abstract: The invention relates to a method of production of catalyst support particles, containing zirconium dioxide and optionally silicon oxide, comprising the steps (i) preparation of a solution containing precursor compounds of zirconium dioxide and optionally of silicon dioxide, (ii) converting the solution(s) to an aerosol, (iii) bringing the aerosol into a directly or indirectly heated pyrolysis zone, (iv) carrying out pyrolysis, and (v) separation of the catalyst particles formed from the pyrolysis gas.

Abstract: The present invention provides a process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, by first separately preheating the starting gases comprising a hydrocarbon-containing stream and an oxygen-containing stream and then mixing them in a mixing zone and, after they have flowed through the burner block, reacting them in the firing space and then cooling the products rapidly, wherein the surface on the firing space side of the burner block is covered with a purge gas stream and this purge gas stream is introduced through the burner block by means of several bores, where the averaged ratio of effective surface area of the burner block to number of these bores in the burner block for the purge gas stream is within a range from 5 to 100 cm2.