Oxide Nanoparticles within a host microporous matrix: Polynuclear copper species in Cu-ZM5 and their role in the reduction of NO |
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| Authors: | G Centi F Fazzini A Galli |
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| Institution: | (1) Dept. Industrial Chemistry, Univ. Messina, Salita Sperone 31, 98166 Messina, Italy;(2) Dept. Ind. Chem. and Materials, V. le Risorgimento 4, 40136 Bologna, Italy |
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| Abstract: | The role of copper-oxide nanoparticles inside a host ZSM5 zeolite, identified by UV-Visible-NIR diffuse reflectance spectroscopy
on the reactivity in NO reduction to N2 in the presence of propane/O2 or ammonia/O2 is discussed. These species lead to an enhancement in the rate of alkane depletion in the reduction of NO in the presence
of propane/O2, whereas they cooperate with isolated ions at exchangeable sites in determining the overall catalytic behaviour in NO reduction
in the presence of ammonia/O2. Also the stability of these species depends on the type of reductant. |
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