On the preparation and properties of CuZSM-5 catalysts for NO decomposition |
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| Authors: | Joseph Valyon W. Keith Hall |
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| Affiliation: | (1) Department of Chemistry, Chevron Science Center, University of Pittsburgh, 15260 Pittsburgh, PA, USA |
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| Abstract: | Equilibrium exchange isotherms were determined for the exchange of Cu2+ with NaZSM-5 at varying Cu(Ac)2 concentrations in solutions of constant volume and zeolite weight. At low Cu2+ levels the solid scavenged all the copper ions. When copper could be detected in the equilibrated solutions,  overexchange was observed. The extent of overexchange was higher at pH  6 than at pH 4. These results were analyzed in relation to catalytic activity.On leave from the Central Institute for Chemistry, Hungarian Academy of Sciences, H1525 Budapest, Hungary. |
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| Keywords: | NO decomposition-sites Cu2+/Na+ exchange equilibria effects of pH on catalytic properties overexchange in CuZSM-5 |
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