Patent application number | Description | Published |
20100190638 | Method For Producing A Shell Catalyst and Corresponding Shell Catalyst - A method for producing a shell catalyst comprising a porous catalyst support shaped body with an outer shell containing at least one transition metal in metal form. To provide a shell catalyst with a relatively small shell thickness, a device is set up to circulate the catalyst support shaped bodies by means of process gases with a reductive effect. The device is charged with catalyst support shaped bodies that are circulated by means of a process gas with a reductive effect, an outer shell of the catalyst support shaped bodies is impregnated with a transition-metal precursor compound by spraying the circulating catalyst support shaped bodies with a solution containing the transition-metal precursor compound, the metal component of the transition-metal precursor compound is converted into the metal form by reduction by means of the process gas, and the catalyst support shaped bodies sprayed with the solution are dried. | 07-29-2010 |
20100197956 | Vam Shell Catalyst, Method For Its Production And Use Thereof - A shell catalyst for the production of vinyl acetate monomer (VAM), comprising a porous catalyst support based on a natural sheet silicate, in particular based on an acid-treated calcined bentonite, said catalyst support being loaded with Pd and Au and being designed as a shaped body. In order to provide a shell catalyst for the production of VAM, which shell catalyst is characterized by a relatively high VAM selectivity and also a high activity, it is proposed that the catalyst support has a surface area of less than 130 m | 08-05-2010 |
20120289737 | METHOD FOR PRODUCING A METAL-CONTAINING SHELL CATALYST WITHOUT INTERMEDIATE CALCINING - A method for producing a shell catalyst which comprises, in the outer shell, one or more of the following metals: Pd, Pt, Ag and Au. Also the use of the shell catalyst produced using the method according to the invention for the production of vinyl acetate monomer, in the hydrogenation of hydrocarbons, in particular the selective hydrogenation of polyunsaturated hydrocarbon compounds, or in the oxidation of alcohols to ketones/aldehydes/carboxylic acids. | 11-15-2012 |
20140081041 | COPPER-PROMOTED SHELL CATALYST FOR PRODUCING ALKENYL CARBOXYLIC ACID ESTERS - A method for producing a shell catalyst which is suitable for the synthesis of alkenyl carboxylic acid esters, in particular for producing vinyl acetate monomer (VAM) from ethylene or allyl acetate monomer from propylene by means of oxy-acetylation. Also, a shell catalyst that can be obtained by the method according to the invention, as well as the use of the shell catalyst produced using the method for producing alkenyl carboxylic acid esters, in particular vinyl acetate monomer (VAM) and allyl acetate monomer. | 03-20-2014 |
20140336411 | CATALYST FOR THE OXIDATION OF HYDROCARBONS CONSISTING OF MOLYBDENUM, VANADIUM, NIOBIUM, TELLURIUM, MANGANESE AND COBALT - A catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, in particular for the selective oxidation of propane to acrylic acid, comprising a) molybdenum (Mo), b) vanadium (V), c) niobium (Nb), d) tellurium (Te), e) manganese (Mn) and cobalt, in which the molar ratio of at least one element, which is selected from manganese and cobalt, to molybdenum lies in the range 0.01 to 0.2. Furthermore, a catalyst for the oxidation and/or oxidative dehydrogenation of hydrocarbons, a use of the catalyst material or of the catalyst, a method for producing a catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, and a method for the selective oxidation of propane to acrylic acid. | 11-13-2014 |