Preparation method of ozone heterogeneous oxidation solid catalyst

Abstract

The invention relates to a preparation method of an ozone heterogeneous oxidation solid catalyst, and belongs to the technical field of environmental protection and chemical catalysts. The preparation method comprises the steps of taking activated carbon, carnallite, potassium feldspar, szaibelyite, pulverized fuel ash and a coal gangue porous mineral material as carriers; after bearizing and modifying the carriers through lithium hypochlorite and bis(acetylacetone) beryllium, adding a surface active agent dimethyl hexadecyl ethyl ammonium ethyl sulfate for carrying out surface activation treatment under an ultrasonic action; then carrying out hydrothermal reaction on the ultrasonic surface activated carriers, a compound mineralizing agent prepared from borax and potassium sulphate, samarium acetylacetonate, tri(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione) europium, holmium oxalate decahydrate, thulium trifluoromethane sulfonate (III) rare-earth metal compound catalytic active auxiliary, cobalt gluconate, L-aspartic acid molybdenum, potassium dicyanoargentate (I) and a terpyridyl ruthenium chloride hexahydrate transition metal catalytic activity center component in a hydrothermal reaction kettle under the action of an emulgator hexadecyl dimethylamine ethyl sulfate; drying a reaction product to remove moisture, and firing in a muffle furnace at a certain temperature to obtain the ozone heterogeneous oxidation solid catalyst.

Description

technical field [0001] The invention relates to a preparation method of a solid catalyst for ozone heterogeneous oxidation, which belongs to the technical fields of environmental protection and chemical catalysts. Background technique [0002] Ozone oxidation technology utilizes the strong oxidation ability of ozone, which can oxidize and decompose many organic pollutants, and is widely used in wastewater treatment. Ozone catalytic oxidation technology is divided into ozone homogeneous catalytic oxidation and ozone heterogeneous catalytic oxidation. Ozone homogeneous catalytic oxidation has catalysts that are difficult to separate, recycle and reuse, and the low utilization rate of ozone leads to high water treatment operation costs. Ozone heterogeneous catalytic oxidation technology has the advantages of easy separation and recovery of catalysts and reusable use, high ozone utilization rate, and high removal rate of organic pollutants, which reduces water treatment. The ad...

AI Technical Summary

Problems solved by technology

Due to the wide variety of pollutants and the complex chemical composition of wastewater, it will have adverse effects on the performance of the catalyst, such as adsorption and anti-toxicity, and the catalyst will easily lose its catalytic activity.

At present, the main problems of the preparation method of ozone heterogeneous oxidation solid catalyst are small adsorption capacity, low adsorption selectivity, poor toxicity resistance of the catalyst, and easy loss of catalytic activity; development and use of multi-component porous carriers to increase the adsorption of the catalyst Capacity, enhanced adsorption selectivity, using rare earth metals, transition metals and noble metals to form multi-metal catalytic active centers to improve catalyst anti-toxicity and catalytic activity The preparation method of ozone heterogeneous oxidation solid catalyst has greater environmental benefits and higher Practical value