A Facile Method to Synthesize Co₃O₄ Catalyst for Efficient Chlorobenzene Combustion

Abstract

Preparation methods are essential for the synthesis of materials with diverse structures, which may lead to the different physicochemical properties. The activities of catalysts for volatile organic compounds (VOCs) combustion can be improved by optimizing the preparation methods. In this paper, a novel ammonium bicarbonate pyrolysis method is successfully applied to prepare Co3O4 catalyst (Co3O4‐A), which is not only facile in preparation, but also superior to the Co3O4 catalysts prepared by the hydrothermal, sol‐gel, MOFs pyrolysis and carbonate pyrolysis method in the performance of chlorobenzene catalytic oxidation with 90 % conversion and mineralization temperature at 310 and 325 °C, respectively (1000 ppm CB, Air, WHSV=60,000 mL ⋅ g−1 ⋅ h−1). Furthermore, Co3O4‐A catalyst can maintain high catalytic activity for a long time, and has high tolerance to water vapor, which indicates Co3O4‐A catalyst has a good potential application value in catalytic combustion of chlorobenzene.

Hydrothermal Synthesis of Mixed Oxide Compositions of Cobalt‐Zirconium and their Catalytic Activity in the Decomposition of Hydrogen Peroxide

“…Especially since the listed oxides are poorly soluble in water, due to which the appearance of the corresponding ions in drinking water in unacceptable (above the MPC) quantities are excluded. The last times much attention is paid to catalysts based on Co 3 O 4 , [28][29][30][31][32][33][34][35][36][37][38][39][40][41] which, in depending on the method of production, show high activity and stability in a wide range of temperatures. It is established that addition of other oxides to Co 3 O 4 can increase its catalytic activity in oxidation reactions of various kinds.…”