Activated carbon cloth-supported Pd–Cu catalyst: Application for continuous water denitrification

Activated Carbon Supported Metal Catalysts for Nitrate and Nitrite Reduction in Water

“…Among the Pt catalysts tested, the combination with copper is the most efficient, followed by the Pt-Sn, which has only a residual activity. Considering the performance of the promoter metal, copper seems to be the most effective, which is in agreement with the literature [1,3,11,13], followed by tin. In addition, for the catalysts with tin, the highest conversion is obtained for that containing Rh.…”

Nitrate Reduction Catalyzed by Pd–Cu and Pt–Cu Supported on Different Carbon Materials

“…The formation of ammonium as by-product is the critical problem of this process. Since the discovery by Vorlop and Tacke [4], several studies have been carried out using bimetallic catalysts, such as Pd-Cu [5][6][7], Pt-Cu [5,8], Pd-Sn [9][10][11][12] supported on different materials such as activated carbon [13][14][15][16], cationic resin [17], alumina [18,19], titania [20,21], and other metal oxides [22][23][24][25]; however, the selectivities are not yet satisfactory. The activity and selectivity of the bimetallic catalysts in nitrate reduction have shown to be highly dependent on the preparation method, mode of noble metal promoting, metal-promoter ratio as well as the operation conditions.…”

Catalytic stepwise nitrate hydrogenation in batch-recycle fixed-bed reactors

“…Supported bimetallic palladium-based catalysts have been found to exhibit promising catalytic performance in terms of nitrate reduction and chemical resistance [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. There are also reports regarding the use of monometallic palladium or platinum catalysts supported on oxides that exhibit promoting effect for the catalytic liquid-phase nitrate hydrogenation [20][21][22].…”