Preparation method of ozone heterogeneous oxidation solid catalyst

Abstract

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. Use medical stone, wollastonite, dolomite, calcite, hydrotalcite and langbeinite as the carrier, expand the pores with lithium hypochlorite and bis(acetylacetonate) beryllium, add tetradecyltributylammonium chloride After the activation treatment under the action of ultrasonic waves, the carrier is mixed with the composite mineralizer borax and potassium sulfate in a hydrothermal reactor, and the precursors of the catalytic activity assistant scandium(III) isopropoxide, tri(4,4,4-trifluoro ‑1‑(2‑thiophene)‑1,3‑butanedione) europium, tris[N,N‑bis(trimethylsilyl)amine] erbium, thulium(III) trifluoromethanesulfonate, catalytic active center precursors Titanocene ring substituted salicylic acid complex, zinc lactate, catechol ethylenediamine tungsten complex and terpyridyl ruthenium chloride hexahydrate, in N-decyldimethyl-N'-trimethyl Hydrothermal reaction under the action of 2-hydroxypropyl ammonium chloride, drying to remove moisture, burning in a muffle furnace to obtain a solid catalyst for ozone heterogeneous oxidation.

Description

Technical field [0001] The invention relates to a preparation method of a solid catalyst for ozone heterogeneous oxidation, belonging to the technical field of environmental protection and chemical catalysts. Background technique [0002] Ozone oxidation technology takes advantage of the strong ability of ozone to oxidize and decompose many organic pollutants, and is widely used in wastewater treatment. Ozone catalytic oxidation technology is divided into homogeneous catalytic oxidation of ozone and heterogeneous catalytic oxidation of ozone. In homogeneous catalytic oxidation of ozone, the catalyst is difficult to separate and recycle and reuse, and the low utilization rate of ozone leads to higher water treatment operating costs and removal of organic pollutants. The low rate and easy to cause secondary pollution of water make its application limited; the ozone heterogeneous catalytic oxidation technology has catalysts that are easy to separate and recover and can be reused, hi...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems of low catalyst adsorption, poor anti-toxicity and easy loss of catalytic activity in the current preparation method of ozone heterogeneous oxidation solid catalyst, a multi-component porous carrier was developed to enhance the adsorption of the catalyst through pore expansion and surface activation. Rare-earth organometallic compounds as catalyst precursors, common transition metal organic compounds and noble metal compounds as catalyst active center precursors, and multi-component porous supports are prepared by hydrothermal reaction and high-temperature calcination to prepare multi-metal-containing ozone heterogeneous oxidation The preparation method of solid catalyst to improve the anti-toxicity and catalytic activity of the catalyst is characterized in that component A and deionized water are added into a sealable reactor and stirred to prepare an aqueous solution, and the weight concentration of component A is controlled to be 2% to 6%. After the preparation is completed, add component B under stirring, raise the temperature to 35°C-50°C, continue to stir for 3h-6h,

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