Pt-Cu / ZSM-5 for removal of nitrates from drinking water |
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| Authors: | Carolina Pfaff Luis Melo and Paulino Betancourt |
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| Institution: | (1) Departamento de Química Aplicada, Facultad de Ingeniería, Universidad Central de Venezuela, Caracas, venezuela;(2) Centro de Catálisis, Petróleo y Petroquímica, Facultad de Ciencias, AP 47102 Los Chaguaramos, Caracas, venezuela |
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| Abstract: | Removal of nitrates from drinking water by catalytic hydrogenation over ZSM-5 supported Pt-Cu catalysts was studied. Bimetallics Pt-Cu were prepared by ion exchange of copper on a parent monometallic platinum catalyst. Monometallic platinum catalysts are inactive for nitrate reduction, while Pt-Cu bimetallic catalysts are active for nitrate removal. In the bimetallic catalyst, the role of copper is probably to reduce nitrate according to a redox reaction. The addition of copper to Pt catalysts decreases the production of ammonium ions |
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| Keywords: | Nitrates Pt-Cu / ZSM-5 catalysts reduction |
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