CATALYST FOR REMOVING VOLATILE ORGANIC COMPOUND AND PREPARATION METHOD THEREFOR

摘要

A catalyst for removing volatile organic compounds and a preparation method therefor. Said catalyst uses iron-, cobalt-, and nickel-modified aluminium oxide as the carrier, cordierite honeycomb ceramics as the matrix, and an extremely low content of a mixture of platinum and palladium as the active component; the molar ratio of platinum to palladium is 0-1 : 0-9, the amount of the mixture of platinum and palladium accounts for 0.01-0.05% by mass of the matrix, and the amount of the carrier accounts for 3-5% by mass of the matrix. The preparation method for the catalyst comprises the steps of: (1) coating of the carrier; (2) discharge strengthening pretreatment; (3) preparation of an impregnation liquid of active components; and (4) load and reduction of the active components. Said method overcomes the defects of the existing catalyst for removing volatile organic compounds, e.g., the modification is too complicated, the preparation process is long, loading amount of noble metals is high, and the cost is therefore also higher; a catalyst having good low-temperature activities and excellent high-temperature resistance is prepared by said method.