Application of modified perovskite loaded bimetallic catalyst in methane catalytic combustion

Abstract

The invention discloses an application of a modified perovskite loaded bimetallic catalyst in methane catalytic combustion. The preparation method comprises the following steps: weighing perovskite, precious metal salt and transition metal salt, dissolving in water, ultrasonically stirring to form a mixed solution, uniformly dispersing, adding a hydroxyl screening agent, uniformly dispersing, introducing an ionization source, carrying out irradiation reaction, centrifugally washing, drying to obtain a solid, roasting and activating the solid in an air atmosphere, and drying to obtain the perovskite catalyst. The ionizing radiation modified perovskite loaded bimetallic catalyst is obtained. The metal loading capacity of the catalyst is uniformly distributed, the size of metal particles is effectively controlled, the metal particles and the carrier have a relatively strong loading combination degree, and the catalyst has high catalytic activity on the combustion reaction of methane. The whole preparation process is simple to operate, the repeatability is strong, the reaction condition is mild, and the catalyst is suitable for large-scale production; the catalyst has important application value in the fields of environmental governance, gas catalytic combustion and the like.