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. Medical stone, wollastonite, bentonite, polyhalite, magnesium spinel and peridotite are used as carriers, and after the carrier is expanded by lithium hypochlorite and bis(acetylacetonate) beryllium, the surfactant octadecyl chloride is added Trimethylammonium is activated under the action of ultrasonic waves, and then the activated carrier is mixed with the composite mineralizer borax and potassium sulfate in a hydrothermal reaction kettle, the precursor of the catalytic activity auxiliary agent scandium (III) isopropoxide, holmium oxalate decahydrate, Thulium(III) trifluoromethanesulfonate, lutetium carbonate hydrate, catalytic active center component precursor titanocene ring-substituted salicylic acid complex, L-aspartic acid molybdenum, dithiocyanatosilver(I) acid Potassium, diammine platinum dichloride, carry out hydrothermal reaction under the action of emulsifier N-hexadecyldimethyl-N'-trimethyl-propyl ammonium dichloride, dry to remove moisture, in muffle Ignition in a 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, 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

[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 metal organic compounds as precursors of catalytic active additives, common transition metal organic compounds and noble metal compounds as precursors of catalytic active centers and multi-component porous carriers through hydrothermal reaction and high temperature calcination to prepare ozone heterogeneous oxidation containing multiple metals 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