A highly stable LaCo0.75Fe0.25O3 perovskite catalyst supported on a ceramic monolith used for chlorobenzene combustion

Abstract

The elimination or at least the reduction of chlorinated volatile organic compound (Cl-VOC) emissions is imperative to reduce environmental pollution and human health risks. Catalytic oxidation is a possible solution, but the major challenge is to obtain catalysts with high resistance to Cl poisoning and those that could be used on the industrial scale. In this article, an LaCo_0.75Fe_0.25O₃ perovskite catalyst was successfully deposited on a cordierite monolith. A homogeneous and well-adhered layer was obtained with no accumulation of solids in monolith channels. The monolithic catalyst was evaluated in a chlorobenzene combustion reaction. It presented excellent catalytic stability with 100% chlorobenzene conversion at 448 °C over a duration of 200 h on time-on-stream. The superior stability of this monolithic catalyst evidences its great resistance to Cl poisoning, which enhances the capacity of this catalyst for scaling up for industrial application.