Preparation method and application of iron-copper composite catalyst

Abstract

The invention discloses a preparation method and application of an iron-copper composite catalyst. The preparation method includes the following steps that 1, ferrous sulfate is dissolved in a mixed solution of ethyl alcohol and deionized water, urea is added, and the mixture is stirred to be dissolved; 2, the material obtained in the step 1 is subjected to magnetic stirring and refluxing in an oil bath, the material is centrifugally washed after being naturally cooled, precipitate is obtained, and the precipitate is dried; 3, the material obtained in the step 2 is calcined, and a first component is obtained after natural cooling is completed; 4, copper nitrate is completely dissolved in a mixed solution of ethyl alcohol and ethylene glycol; 5, the first component is added into the material obtained in the step 4, the first component is completely dispersed through ultrasonic treatment, then the mixture reacts for 3-7 h at the temperature of 115-165 DEG C, the mixture is centrifugally washed after being naturally cooled, and precipitate is obtained; 6, the precipitate obtained in the step 5 is dried under the vacuum condition, and the iron-copper composite catalyst is obtained. The adding amount of the prepared iron-copper composite catalyst and the adding amount of persulfate are both small, therefore, cost is reduced, and the catalyst can be separated and reused after being precipitated.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method and application of an iron-copper composite catalyst. Background technique [0002] Oxidation method, as an important component in the treatment of wastewater containing organic matter, can effectively remove organic matter that is difficult to biodegrade. Fenton and Fenton-like reactions are widely used in chemical oxidation methods. The advantage is that the generated hydroxyl radicals have strong oxidizing properties, and can oxidize most organic substances indiscriminately to achieve the purpose of removing pollutants. However, due to its relatively harsh requirements on reaction conditions (pH value is about 3), H 2 o 2 The price is expensive, the storage is difficult, and the subsequent biochemical treatment needs to adjust the pH of the influent water, resulting in high treatment costs. [0003] Based on the sulfate radical (SO 4 - ·...

AI Technical Summary

Problems solved by technology

Among them Co 2+ Although it has high catalytic performance, its carcinogenic effect leads to Co 2+ not widely applicable

As another commonly used catalyst, iron oxide often requires additional energy input, such as ultrasound and UV, due to its weak catalytic performance, thereby increasing the processing cost.

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