Method for improving the Thermal shock behavior of monolithic Catalysts

摘要

The present Invention relates to a process for the preparation of monolithic Catalysts with improved Thermal shock Properties, which consists of a monolithic Ceramic Inert Carrier,On the carrier Film of Metal Oxides in Catalysis and promoting the film as catalytic Active Component dispersed noble Metals and / or non nobleWhere the carrier before the application of the film of Metal Oxides and catalytic Active Component applies an organic filler material insoluble in waterFUSE and flammable at temperatures above its Melting Point, then the carrier Cooling Below The Melting Point.They are applied in case the catalytic Active Component content in the film of Metal Oxides Coating dispersion, driedThe filling material is burned in air tempersturas above 500 degrees C, and then, if it had not happenedApplies in the known catalytic Active component on the oxide Film, wherein, the carrier by Treatment with an aqueous dispersion of the filler material.Preferably with a paraffinic Wax with a Melting Point above 80 degrees C TEMPERATURE, is coated with particles of filler material.The Carrier is coated and dried and then heated Above The Melting Point of the filler material.