Preparation method of ozone heterogeneous oxidation solid catalyst

A heterogeneous oxidation, solid catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of easy loss of catalytic activity and low catalyst adsorption. , poor anti-toxicity and other problems, to achieve the effect of improving anti-toxicity and catalytic activity, inhibiting precipitation, and strong adsorption

Inactive Publication Date: 2017-08-04
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
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Example Embodiment

[0007] Example 1: 1.35g lithium hypochlorite, 1.65g bis(acetylacetone) beryllium, 140ml deionized water were added to a 500ml sealable reactor and stirred and mixed uniformly. The weight concentration of the aqueous solution was 2.1%. The weight ratio of lithium chlorate: bis(acetylacetone) beryllium=1:1.2; 2.75g attapulgite which is washed with deionized water until it is neutral, dried at 103℃ to remove water, and then sieved through -200 mesh to +400 mesh standard sieve Soil, 3.75g diopside, 4.75g illite, 5.75g sodium borate, 6.75g basalt, 7.75g magnesia, lithium hypochlorite and bis(acetylacetone) beryllium weight (3g): porous material The weight (31.5g)=1:10.5, heat up to 36℃, continue to stir and react for 3.2h, filter, dry at 103℃ to obtain 31g of expanded modified carrier; put into the expanded modified carrier in a 500ml ultrasonic reactor Carrier 31g, then add 3.25g trioctyl methyl ammonium chloride dissolved in 100ml deionized water aqueous solution, the weight conce...

Example Embodiment

[0008] Example 2: 0.24g lithium hypochlorite, 0.36g bis(acetylacetone) beryllium, 10ml deionized water were added to a 100ml sealable reactor and stirred and mixed uniformly. The weight concentration of the aqueous solution was 5.7%. The weight ratio of lithium chlorate: bis(acetylacetone) beryllium=1:1.5; 1.45g attapulgite which is washed with deionized water until it is neutral, dried at 103℃ to remove water, and then sieved through -200 mesh to +400 mesh standard sieve Soil, 1.65g diopside, 1.85g illite, 2.05g sodium borate, 2.25g basalt, 2.45g magnesia, lithium hypochlorite and bis(acetylacetone) beryllium weight (0.6g): porous The weight of the material (11.7g)=1:19.5, the temperature is raised to 48℃, and the reaction is continued for 5.8h, filtered, and dried at 105℃ to obtain 11.5g of expanded modified carrier; put into the expanded hole in a 100ml ultrasonic reactor Modified carrier 11.5g, then add 2.2g trioctyl methyl ammonium chloride dissolved in 26ml deionized wate...

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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. The preparation method is to use attapulgite, diopside, illite, sorbite, basalt and kabeinite porous materials as carriers, and the carrier is modified by lithium hypochlorite and bis(acetylacetonate) beryllium to expand pores. , adding the surfactant trioctylmethyl ammonium chloride to carry out surface activation treatment under the action of ultrasonic waves, and then the ultrasonic surface activation carrier is mixed with the composite mineralizer borax and potassium sulfate in the hydrothermal reaction kettle, and the catalytic activity auxiliary agent precursor three (3‑trifluoroacetyl‑D‑camphor)praseodymium(III), tricyclopentadienyl promethium, tris(4,4,4‑trifluoro‑1‑(2‑thiophene)‑1,3‑butanedione ) europium, holmium oxalate decahydrate rare earth metal organic compound, catalytic active center component precursor common transition metal organic compound ferrous fumarate, nickel citrate, ammonium zirconium carbonate and noble metal compound dichlorotetraammine palladium, in emulsifier Hydrothermal reaction is carried out under the action of octadecyl dimethyl hydroxypropyl ammonium chloride. After the reaction product is dried to remove water, it is burned in a muffle furnace at a certain temperature 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...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J20/20B01J20/30C02F1/78
CPCB01J23/894B01J20/04B01J20/045B01J20/06B01J20/10B01J20/12B01J20/20B01J35/10B01J37/084B01J37/10B01J2220/42B01J2220/4806B01J2220/4812C02F1/725C02F1/78C02F2305/02
Inventor 朱明王麒麟宋佳柠
Owner SICHUAN NORMAL UNIVERSITY
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