REACTIVATION OF CATALYSTS USEFUL FOR NITROGEN OXIDES REMOVAL

摘要

ABSTRACT OF THE DISCLOSURECatalysts inactivated in the course of removingnitrogen oxides in the presence of ammonia by poisonspresent in exhaust gas can be reactivated for repeatedreuses by calcination in the atmosphere at an elevatedtemperature, e.g., from about 700° C. to 1,200° C.- 1 -