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Manganese-based bimetallic oxide mesoporous material, and preparation method and application thereof

A technology of bimetallic oxides and mesoporous materials, applied in the direction of silicon compounds, non-metallic elements, chemical instruments and methods, etc., can solve the problems of inseparable recovery of catalysts, narrow adaptable range of reaction pH, etc., and achieve low energy consumption and low cost. The effect of easy operation and simple preparation method

Active Publication Date: 2020-05-15
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among many advanced oxidation technologies, the Fenton method, as a wastewater treatment process with good application prospects, is widely used to treat various organic wastewater. However, the traditional homogeneous Fenton exists to produce iron-containing sludge, and the catalyst cannot be separated. Recycling, narrow reaction pH range (pH<5), etc.

Method used

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  • Manganese-based bimetallic oxide mesoporous material, and preparation method and application thereof
  • Manganese-based bimetallic oxide mesoporous material, and preparation method and application thereof
  • Manganese-based bimetallic oxide mesoporous material, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0047] (1) Catalyst preparation

[0048] Add 3.0g SBA-15 silicon template agent into 100mL acetone and disperse under stirring until a stable suspension system is formed. Then, 2 mL of 30% manganese nitrate aqueous solution was added to the suspension system while stirring in a water bath at 30° C., and the stirring and adsorption were continued for one hour. The suspension solution was filtered, washed, and dried at room temperature, then transferred to a muffle furnace for calcination at 500°C for 1 hour to form a composite of manganese oxide and SBA-15. Then, redisperse the compound of manganese oxide and SBA-15 in 100mL of acetone, and add 1mL of 5% ferric nitrate aqueous solution to the suspension system while stirring in a water bath at 0°C. After half an hour of adsorption, continue to add Add 2mL of 30% manganese nitrate aqueous solution, continue to stir and absorb for half an hour. The above suspension solution is filtered, washed and dried, then transferred to a m...

Embodiment 2

[0055] (1) Catalyst preparation

[0056] Add 3.0g SBA-15 silicon template agent into 100mL acetone and disperse under stirring until a stable suspension system is formed. Then, 2 mL of 30% manganese nitrate aqueous solution was added to the suspension system while stirring in a water bath at 30° C., and the stirring and adsorption were continued for one hour. The suspension solution was filtered, washed, and dried at room temperature, then transferred to a muffle furnace for calcination at 500°C for 1 hour to form a composite of manganese oxide and SBA-15. Then, redisperse the compound of manganese oxide and SBA-15 in 100mL of acetone, add 1mL of 10% ferric nitrate aqueous solution to the suspension system while stirring in a water bath at 0°C, after half an hour of adsorption, continue to add to the suspension system Add 2mL of 30% manganese nitrate aqueous solution, continue to stir and absorb for half an hour. The above suspension solution is filtered, washed and dried, t...

Embodiment 3

[0063] (1) Catalyst preparation

[0064] Add 3.0g SBA-15 silicon template agent into 100mL acetone and disperse under stirring until a stable suspension system is formed. Then, 2 mL of 30% manganese nitrate aqueous solution was added to the suspension system while stirring in a water bath at 30° C., and the stirring and adsorption were continued for one hour. The suspension solution was filtered, washed, and dried at room temperature, then transferred to a muffle furnace for calcination at 500°C for 1 hour to form a composite of manganese oxide and SBA-15. Then, redisperse the compound of manganese oxide and SBA-15 in 100mL of acetone, add 1mL of 15% ferric nitrate aqueous solution to the suspension system while stirring in a water bath at 0°C, after half an hour of adsorption, continue to add to the suspension system Add 2mL of 30% manganese nitrate aqueous solution, continue to stir and absorb for half an hour. The above suspension solution is filtered, washed and dried, t...

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Abstract

The invention discloses a manganese-based bimetallic oxide mesoporous material, and a preparation method and an application thereof. The preparation method comprises the following steps: (1) dispersing a mesoporous silicon template into a dispersant, adding an aqueous manganese nitrate solution under a stirring condition in a water bath of 25-30 DEG C, continuously stirring and adsorbing for 40-60min to obtain a suspension, sequentially filtering, washing and drying the obtained suspension, and calcining to obtain a compound of manganese oxide and the mesoporous silicon template; and (2) re-dispersing the obtained compound in a dispersant, adding an aqueous ferric nitrate solution under a stirring condition in a water bath of 0 DEG C, stirring and adsorbing for 20-40 min, continuously adding the aqueous manganese nitrate solution, continuously stirring and adsorbing for 20-40 min to obtain a suspension, sequentially filtering, washing and drying the obtained suspension, calcining to obtain a manganese-based bimetallic oxide and SBA-15 compound, and removing the redundant mesoporous silicon template in the obtained compound to obtain the mesoporous silicon template. The manganese-based bimetallic oxide mesoporous material obtained by the invention is used for treating a complex wastewater system by a Fenton-like method.

Description

technical field [0001] The present application relates to the field of organic polluted wastewater treatment, in particular to a manganese-based double metal oxide mesoporous material and its preparation and application. Background technique [0002] With the demand of human beings for the quality of life, the demand for synthetic dyes is increasing day by day, which inevitably leads to the generation of dye wastewater. Dye wastewater accumulates in the environment and biological chain, and produces "three effects" under the action of microorganisms, endangering human health. Dye wastewater also has the characteristics of rich types, high degree of coloration, complex components, and high chemical stability, which brings certain difficulties to treatment. Therefore, it is of great importance to find efficient, green and economical dye wastewater treatment methods. The existing treatment methods for dye wastewater can be divided into three categories: physical, chemical and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J20/10B01J20/30C02F1/28C02F1/72C02F101/30C02F101/38
CPCB01J29/0341B01J20/06B01J20/103C02F1/722C02F1/725C02F1/281C02F2101/308C02F2101/30C02F2101/38C02F2305/026B01J2229/186
Inventor 王挺蒋伶俐章珊琦吴礼光
Owner ZHEJIANG GONGSHANG UNIVERSITY
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