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

• Published in: Catalysis letters 2010-11, Vol.139 (3-4), p.97-104
• Main Authors: Soares, Olívia Salomé G. P, Órfão, José J. M, Pereira, Manuel Fernando R
• Format: Article
• Language: English
• Subjects: Activated carbon; Adsorbents; Bimetallic catalysts; Bimetals; Carbon; Carbon materials; Catalysis; Catalysts; Chemical reduction; Chemistry; Chemistry and Materials Science; Copper; Exact sciences and technology; General and physical chemistry; Heterogeneous catalysis; Industrial Chemistry/Chemical Engineering; Materials selection; Multi wall carbon nanotubes; nitrate reduction; Nitrates; Organic chemistry; Organometallic Chemistry; Palladium; Palladium catalysts; Pd-Cu; Physical Chemistry; Platinum; Pt-Cu; Selectivity; Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Xerogels
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-010-0424-y

The activities and selectivities of Pd-Cu and Pt-Cu bimetallic catalysts supported on different carbon materials (activated carbons with different surface chemistries, multiwalled carbon nanotubes and carbon xerogels) were studied in the catalytic reduction of nitrate in water. The surface chemistry of the support has an important role in the catalyst activity and selectivity, being its influence more pronounced when Pt-Cu catalysts are used. Generally, catalysts supported on basic carbon materials are more active and selective. Graphical Abstract NO₃ ⁻ concentrations during nitrate reduction in the presence of 2%Pt-1%Cu catalysts. [graphic removed]