Ozone heterogeneous oxidation solid catalyst preparation method

Abstract

The invention belongs to the technical field of environment protection and chemical catalysts and relates to an ozone heterogeneous oxidation solid catalyst preparation method. The preparation method includes: taking porous mineral materials including activated carbon, carnallite, illite, ulexite, nitratine and dolomite as carriers; subjecting the carriers to lithium hypochlorite and bis(acetylacetone)beryllium broaching modification; adding surfactant dimethylhexadecylethyl ammonium sulfate for surface activation under the action of ultrasonic waves; subjecting the carriers subjected to ultrasonic surface activation to hydrothermal reaction, with a complex mineralizer composed of borax and potassium sulfate, catalytic activity auxiliary agents including samarium acetylacetonate, tri(4,4,4-trifuloro-1-(2-thiophene)-1,3-butanedione)europium, tri(trifluoromethanesulfonimide)ytterbium and lutetium carbonate hydrate rare earth metal compounds and catalytic activity central components including cobalt gluconate, L-aspartic acid molybdenum, gold potassium chloride, tetraammine dichloropalladium transition metals, in a hydrothermal reactor under the action of N-oleoyl-N',N'-diethylethylenediamine hydrochloride serving as an emulsifying agent; drying reaction products to remove moisture, and firing in a muffle furnace at a certain temperature to obtain an 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