ZIRCONIA EXTRUDATES

摘要

A PROCESS FOR PREPARING A CALCINED ZIRCONIA EXTRUDATE COMPRISING THE STEPS OF: PREPARING A SHAPABLE DOUGH WHICH COMPRISES MIXING AND KNEADING A PARTICULATE ZIRCONIA WITH A SOLVENT TO OBTAIN A MIXTURE HAVING A TOTAL SOLIDS CONTENT OF FROM 50% TO 85% BY WEIGHT, EXTRUDING THE SHAPABLE DOUGH TO FORM A ZIRCONIA EXTRUDATE, AND DRYING AND CALCINING THE ZIRCONIA EXTRUDATE; CHARACTERIZED IN THAT THE PARTICULATE ZIRCONIA COMPRISES NO MORE THAN 15% BY WEIGHT OF ZIRCONIA WHICH IS OTHER THAN MONOCLINIC ZIRCONIA. THE CALCINED ZIRCONIUM EXTRUDATES PREPARED ACCORDING TO THE PRESENT INVENTION EXHIBIT SIGNIFICANTLY IMPROVED CRUSH STRENGTH AND IS SUITABLE AS A CATALYST OR CATALYST SUPPORT IN A WIDE RANGE OF CHEMICAL PROCESSES.