SUPPORTED PEROVSKITE CATALYSTS BASED ON LANTHANUM, PLATINUM, AND TRANSITION METAL, PREPARATION METHOD THEREOF AND METHOD FOR ELIMINATING ODOR COMPONENTS EXHAUSTED FROM FOOD WASTE TREATMENT PROCESS THROUGH LOW-TEMPERATURE OXIDATION REACTION USING SAID CATALYSTS

摘要

PURPOSE: A supported perovskite catalyst based on lanthanum, platinum, and transition metals, a method for preparing the same, and a method for eliminating bad odor components exhausted from a food waste treatment process through a low-temperature oxidation reaction using the catalyst are provided to maintain stable reaction activity in the oxidation of bad odor components and to improve activity at low temperatures by supporting perovskite crystalline based on lanthanum, platinum, and transition metals. CONSTITUTION: A low temperature oxidating catalyst for eliminating bad odor components includes perovskite crystalline based on lanthanum, platinum, and transition metals and a support supporting the crystalline. A method for preparing the catalyst includes the following: a first solution with dissolved lanthanum, platinum, and a transition metal precursors and a second solution with dissolved citric acid and ethylene glycol are mixed; a support is arranged in the mixed solution; the mixed solution is heated at a temperature between 100 and 140 degrees Celsius for 2 to 5 hours to obtain amorphous perovskite composite; the perovskite composite is dried at a temperature between 80 and 120 degrees Celsius for 2 to 5 hours; the dried perovskite composite is ground and thermally treated for 1 to 3 hours; the thermally treated perovskite composite is thermally treated for 3 to 7 hours.