Kinetics of the catalytic liquid-phase hydrogenation of aqueous nitrate solutions

The effect of support porosity on the selectivity of Pd–In/support catalysts in nitrate reduction

“…From the literature data, it is known that the formation of ammonia is strongly favored in the basic solution [48][49][50][51]. Therefore, the processes of catalytic reduction of nitrates are usually conducted in the slightly acidic reaction medium (pH 5-6).…”

EXAFS analysis of Pd atomic clusters

“…Palladium metal is one of the most promising catalysts for removing nitrate and nitrite ion from drinking water (HOrold et al, 1993, Pintar et al, 1996. For kinetic studies, monometallic Pd and bimetallic Pd-Cu catalysts were prepared by impregnation of y-AI203 powder with Pd and Cu nitrate salts (5 and 1.5 at.% respectively) and subsequent calcination/reduction in hydrogen atmosphere.…”

Srat Chemistry and Acid Consumption During Simulated DWPF Melter Feed Preparation

“…Currently, bimetallic catalysts of copper and Pd are being developed to destroy nitrate in aqueous systems, since noble metals alone are ineffective on nitrate. 15 Catalytic hydrogenation of nitrate to N 2 and ammonium ion does not seem likely to be part of the SRAT chemistry, although it cannot be ruled out since the precise route(s) to SRAT product ammonium ion have not been established. N 2 O production in the silver and no noble metal runs was about 1.7 moles, or only half the total of the 0.2 wt% Pd runs.…”