PROCESS FOR THE REMOVAL OF NOX NITROGEN OXIDES FROM CATALYTIC REDUCTION (SCR) BY AMMONIA ON ZEOLITIC CATALYSTS THAT DO NOT RESULT IN THE FORMATION OF NITROGEN PROTOXIDE

摘要

Non-N-oxide SCR catalysts are partially copper-exchanged zeolites, in particular faujasites, in which copper does not occupy small cages (eg, sodalite cages of faujasites). Special attention is paid to some mixed rare earth / copper zeolites. The reduction selectivity of NOx in N2 is correlated with the TPR diagram of the catalysts. / P