Simultaneous removal of NO_x and chlorobenzene on V₂O₅/TiO₂ granular catalyst: Kinetic study and performance prediction

Abstract

• A V₂O₅/TiO₂ granular catalyst for simultaneous removal of NO and chlorobenzene.

• Catalyst synthesized by vanadyl acetylacetonate showed good activity and stability.

• The kinetic model was established and the synergetic activity was predicted.

• Both chlorobenzene oxidation and SCR of NO follow pseudo-first-order kinetics.

• The work is of much value to design of multi-pollutants emission control system.

The synergetic abatement of multi-pollutants is one of the development trends of flue gas pollution control technology, which is still in the initial stage and facing many challenges. We developed a V₂O₅/TiO₂ granular catalyst and established the kinetic model for the simultaneous removal of NO and chlorobenzene (i.e., an important precursor of dioxins). The granular catalyst synthesized using vanadyl acetylacetonate precursor showed good synergistic catalytic performance and stability. Although the SCR reaction of NO and the oxidation reaction of chlorobenzene mutually inhibited, the reaction order of each reaction was not considerably affected, and the pseudo-first-order reaction kinetics was still followed. The performance prediction of this work is of much value to the understanding and reasonable design of a catalytic system for multi-pollutants (i.e., NO and dioxins) emission control.

Graphical abstract

Keywords

NO _x / Chlorobenzene / Simultaneous removal / Kinetic study / Performance prediction / V ₂O ₅/TiO ₂ / Graphical abstract

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