Preparation method for carrollite spinel and application thereof

A technology of sulfur-copper-cobalt ore and spinel, applied in chemical instruments and methods, water pollutants, physical/chemical process catalysts, etc., can solve problems such as large dosage, instability and easy dissolution of single metal sulfide , to achieve the effects of fast reaction speed, stable structure and high catalytic efficiency

Inactive Publication Date: 2019-05-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of large dosage of the existing double metal oxide in the process of catalytic monopersulfate degradation of organic pollutants in water, and the probl

Method used

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  • Preparation method for carrollite spinel and application thereof
  • Preparation method for carrollite spinel and application thereof
  • Preparation method for carrollite spinel and application thereof

Examples

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Example Embodiment

[0030] Specific embodiment one: The preparation method of sulphur-copper-cobalt ore spinel of this embodiment is carried out according to the following steps: dissolving cobalt ion salt and copper ion salt in ultrapure water, stirring until a clear solution is obtained, and slowly adding to the clear solution Thiourea is then vigorously stirred until thiourea is completely dissolved and a transparent and uniform solution is obtained; after adding excess ethylenediamine to the transparent and uniform solution, a dark brown liquid is obtained. The dark brown liquid is heated at high temperature for hydrothermal reaction. After the reaction is completed, the obtained solid product is cooled to room temperature, and then the solid product is washed several times with ultrapure water and ethanol in sequence, and finally dried to obtain the sulphur copper cobalt ore spinel.

[0031] 1. The specific reaction mechanism of this embodiment is that the sulphur-copper-cobalt ore spinel acts a...

Example Embodiment

[0042] Specific embodiment two: this embodiment is different from specific embodiment one in that: the cobalt ion salt is cobalt nitrate, cobalt sulfate or cobalt acetate; the copper ion salt is copper nitrate, copper sulfate or copper acetate. The other steps and parameters are the same as in the first embodiment.

Example Embodiment

[0043] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the concentration of cobalt ion in the clear solution is 0.4-0.8 mmol / L. The other steps and parameters are the same as in the first or second embodiment.

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Abstract

The invention provides a preparation method for carrollite spinel and an application thereof and relates to the preparation and application of carrollite spinel. The preparation method comprises the following steps: dissolving cobalt ion salt and cupric ion salt in ultrapure water and adding thiourea; dissolving and then adding excessive quadrol, and performing hydrothermal reaction, thereby acquiring a solid product; cleaning and drying the solid product. The application is as follows: free sulfate radicals generated by activation of persulfate under the effect of carrollite spinel are utilized to degrade organic pollutants in water, under the condition of taking the carrollite spinel as a catalyst and monopersulfate as an oxidizing agent. According to the invention, transition metals copper and cobalt on the surface of carrollite spinel are capable of catalyzing monopersulfate to decompose and generate free sulfate radicals with strong oxidizing property in the manner of changing valence state, and the free sulfate radicals react with organic pollutants so as to decompose and even mineralize the organic pollutants. The carrollite spinel prepared according to the invention has a stable structure, is high in catalyzing efficiency and is reusable. The invention is suitable for preparing carrollite spinel and catalyzing monopersulfate to degrade organic pollutants in water.

Description

technical field [0001] The invention relates to a preparation method and application of spinel. Background technique [0002] With the rapid development of my country's economy and the rapid advancement of urbanization, the excessive exploitation of water resources and substandard sewage discharge have caused further deterioration of the water source environment. Water and water quality type water shortage transformation. With the continuous expansion of the scope of human living activities and the rapid development of the types and scale of industrial and agricultural production, the types and corresponding concentrations of pollutants in natural water bodies are also increasing, and more than 85% of the pollution is organic pollution. Organic pollutants in water can be divided into two categories according to their sources, namely natural organic matter and synthetic organic matter. Most of the artificially synthesized organic substances are toxic organic pollutants, whic...

Claims

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Application Information

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IPC IPC(8): B01J27/043C02F1/72C02F101/34
Inventor 马军徐浩丹汪达卢晓辉陈志强
Owner HARBIN INST OF TECH
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