Supported Pd-Cu Nanoparticles for Water Phase Reduction of Nitrates. Influence of the Support and of the pH Conditions

被引：17
作者：
Papa, Florica [1 ]
Balint, Ioan [1 ]
Negrila, Catalin [2 ]
Olaru, Elena-Alina [3 ]
Zgura, Irina [2 ]
Bradu, Corina [3 ]
机构：
[1] Romanian Acad, Inst Phys Chem, Bucharest 060021, Romania
[2] Natl Inst Mat Phys, Magurele 077125, Romania
[3] Univ Bucharest, Res Ctr Environm Protect & Waste Management, Bucharest 050663, Romania
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 49期
关键词：
CATALYTIC-REDUCTION; PT-CU; DRINKING-WATER; NATURAL-WATER; HYDROGENATION; COPPER; PALLADIUM; DENITRIFICATION; SELECTIVITY; ADSORPTION;
D O I：
10.1021/ie503070f
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
PdCu nanoparticles were synthesized by the alkaline polyol method and further supported on alumina or titania. The nanoparticles show a crystalline Pd core and a shell rich in amorphous copper as was put in evidence by complex characterization methods (X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and CO chemisorption). The performances of as-prepared catalysts in the water phase reduction of nitrate were assessed in comparison with catalysts obtained by impregnation. Supported nanoparticle catalysts show a high activity in the reduction of nitrates, better than the impregnated catalysts. The importance of the support choice was discussed. The catalyst based on PdCu nanoparticles supported on titania (PCT-np) is the most active, selective, and stable among those investigated. Also, the influence of pH conditions on the PCT-np catalyst performances was emphasized.
引用
收藏
页码：19094 / 19103
页数：10
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