Chemistry Letters, Vol.34, No.5, 678-679, 2005
Cu-Pd/ss-zeolites as highly selective catalysts for the hydrogenation of nitrate with hydrogen to harmless products
Cu-Pd/beta-zeolites (BEA) are excellent catalysts for the selective hydrogenation of NO3- with H-2 to harmless products. 1.2wt% Cu-1.0wt% Pd/BEA shows a high selectivity for N-2 + N2O (14 and 80% at 278 K, respectively), while suppressing NH3 production (6%, 3 ppm from 200 ppm of NO3). By coupling the catalyst to Pd/AC, any N2O produced could be entirely converted to N-2.