Abstract

The metal oxide catalyst was prepared by loading CuOx on carbon nanotubes (CNTs) with impregnation method. The catalyst was characterized by BET, TEM and XPS, and the catalytic activity of the catalyst for selective catalytic reduction (SCR) of NO was investigated. The results showed that the species of active components loaded on the catalyst was given priority to with CuO. The NO conversion was improved with temperature increase under the range of 150 to 300°C. The oxygen content had an outstanding influence on the NO conversion of catalysts at lower concentration range. Once the oxygen content was enhanced over 5%, there was no significant increase. Increasing of mole ratio of NH3/NO could increase the NO conversion. When mole ratio of NH3/NO was continued to exceed 1.1, the NO conversion decreased. With the increasing of space velocity, the NO conversion was decreased under the reaction conditions.

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