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Preparation method and application of manganese copper composite oxide catalyst

A manganese-copper composite and oxide technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve complex control, poor repeatability, and complex crystal phases of materials and other issues to achieve the effect of good reusability and good commercial application value

Active Publication Date: 2018-10-19
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the process control of the traditional method to prepare the manganese-copper composite oxide catalyst is complicated and the repeatability is poor, which limits the large-scale production of the catalyst material, and the crystal phase of the material after the roasting treatment is complex, and the crystal grains are easy to sinter, especially when the copper element is present. The distribution in the composite structure cannot be effectively regulated

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  • Preparation method and application of manganese copper composite oxide catalyst
  • Preparation method and application of manganese copper composite oxide catalyst
  • Preparation method and application of manganese copper composite oxide catalyst

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Experimental program
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Embodiment 1

[0027] Manganese acetate (Mn(CH 3 COO) 2 ) is manganese source, trimesic acid (H 3 BTC) is an organic ligand, copper acetylacetonate is a copper source, deionized water and ethanol are a mixed solvent, and the molar composition of each raw material is Mn(CH 3 COO) 2 :H 3 BTC: Copper acetylacetonate: H 2 O: ethanol is 1:3:0.4:560:520. Various raw materials were stirred and reacted at 25°C for 15 h, and the obtained solid was filtered, washed and dried to obtain a light green powder product, which was a copper ion-modified manganese metal organic framework (Cu 2+ / Mn-BTC). Will Cu 2+ / Mn-BTC powder was calcined in a muffle furnace at 500° C. for 3 h to obtain a manganese-copper composite oxide catalyst (the catalyst number is A). XRD characterization results such as figure 1 , indicating that the main chemical components of the catalyst are copper-manganese spinel (standard PDF card number #01-070-0260) and manganese trioxide (standard PDF card number #00-041-1442). FE...

Embodiment 2

[0029] Manganese acetate (Mn(CH 3 COO) 2 ) is manganese source, trimesic acid (H 3 BTC) is an organic ligand, copper acetylacetonate is a copper source, polyvinylpyrrolidone (PVP) is a surfactant, deionized water and ethanol are a mixed solvent, and the molar composition of each raw material is Mn(CH 3 COO) 2 :H 3 BTC: copper acetylacetonate: PVP: H 2 O: ethanol is 1:3:0.04:0.005:560:520. Various raw materials were stirred and reacted at 25°C for 15 hours, and the obtained solid was filtered, washed and dried to obtain a light green powder product, which was a copper ion-modified manganese metal organic framework (Cu 2+ / Mn-BTC). Will Cu2+ / Mn-BTC powder was calcined in a muffle furnace at 500°C for 3h to obtain a manganese-copper composite oxide catalyst (the catalyst number is B). FESEM characterization results such as figure 2 b, shows that the obtained catalyst B is mainly composed of large spherical particles self-assembled by nano-scale particles (average partic...

Embodiment 3

[0031] Manganese acetate (Mn(CH 3 COO) 2 ) is manganese source, trimesic acid (H 3 BTC) is an organic ligand, copper acetylacetonate is a copper source, cetyltrimethylammonium bromide (CTAB) is a surfactant, deionized water and ethanol are a mixed solvent, and the molar composition of each raw material is Mn(CH 3 COO) 2 :H 3 BTC: copper acetylacetonate: CTAB: H 2 O: ethanol is 1:3:0.5:1:560:520. Various raw materials were stirred and reacted at 25°C for 20 h, and the resulting solid was filtered, washed and dried to obtain a light green powder product, which was a copper ion-modified manganese metal organic framework (Cu 2+ / Mn-BTC). Will Cu 2+ / Mn-BTC powder was calcined in a muffle furnace at 500° C. for 3 h to obtain a manganese-copper composite oxide catalyst (the catalyst number is C). EDX element surface scan results are as follows image 3 As shown, it shows that in the obtained catalyst C, the copper element and the manganese element are uniformly distributed ...

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Abstract

The invention discloses a preparation method and application of a manganese copper composite oxide catalyst. A three-dimensional porous metal organic skeleton material is formed by taking Mn <2+> as ametal node based on a metal organic skeleton of Mn<2+> and taking trimesic acid as an organic ligand through self assembling; the crystal structure of Mn-BTC belongs to a trigonal crystal system; a space group (the formula is as shown in the description); copper elements derived from copper acetylacetonate are uniformly distributed on the three-dimensional porous metal organic skeleton material.The defects of complex control, low repeatability and unsuitability for large-scale production in the process of preparing the manganese copper composite oxide catalyst by the traditional method are overcome; furthermore, the degradation efficiency of organic dye in dye waste water by the catalyst prepared by the method can reach to 100 percent, the reusability is high and good commercial application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment catalysts, and in particular relates to a preparation method and application of a manganese-copper composite oxide catalyst. Background technique [0002] At present, there are tens of thousands of commercial dyes in my country, and the output of dyes accounts for more than 60% of the total output of dyes in the world, ranking first in the world. According to statistics, about 80,000 tons of dyes are discharged into the water body environment in my country every year (Acta Chemie Sinica, 2013, 64, 84). Therefore, dye wastewater, as an important pollutant in the water environment, not only causes great damage to the ecological environment, but also seriously threatens the health of Chinese residents. In view of this problem, domestic and foreign research methods in the field of dye wastewater treatment mainly include physical methods, chemical methods, biological methods, etc. Among ...

Claims

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Application Information

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IPC IPC(8): B01J23/889C02F1/72
CPCB01J23/002B01J23/8892C02F1/725C02F2101/308
Inventor 詹国武杨欣
Owner HUAQIAO UNIVERSITY
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