METHOD FOR CLEANING CRUDE TEREPHTHALIC ACID AND CATALYSTS SUITABLE FOR THE SAME AND CONTAINING CARBON FIBERS

摘要

IN A PROCESS FOR PURIFYING CRUDE TEREPHTHALIC ACID BY CATALYTIC HYDROGENATIVE AFTERTREATMENT OVER A CATALYST MATERIAL COMPRISING AT LEAST ONE HYDROGENATION METAL APPLIED TO A CARBON SUPPORT, CARBON FIBERS ARE USED AS CARBON SUPPORT.ALSO PROVIDED ARE A CATALYST WHICH COMPRISES AT LEAST ONE CATALYST MATERIAL COMPRISING AT LEAST ONE HYDROGENATION METAL APPLIED TO CARBON FIBERS HAVING A BET SURFACE AREA OF 500 M²/G, AND A MONOLITHIC CATALYST WHICH COMPRISES THIS CATALYST MATERIAL OR MATERIALS COMPRISING THE HYDROGENATION METAL OR METALS APPLIED TO CARBON FIBERS AND AT LEAST ONE SUPPORT OR SKELETAL ELEMENT WHICH IS DIFFERENT FROM THE CATALYST MATERIAL AND IS CONNECTED TO IT AND MECHANICALLY SUPPORTS THE CATALYST MATERIAL AND HOLDS IT THE MONOLITHIC FROM. SUCH SHEET-LIKE CATALYST MATERIAL IN THE FROM OF MOVEN OR KNITTED FABRICS/MESHES AND/OR FELTS CAN BE INSTALLED IN A REACTORS FOR THE SELECTIVE HYDROGENATION OF CARBON-CARBON DOUBLE OR TRIPLE BONDS AND/OR HYDROGENATABLE FUNCTIONAL GROUPS IN ORGANIC COMPOUNDS IN WHICH THESE ARE PRESENT.