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Supported transition metal carbide as well as preparation method and application thereof

A technology of transition metals and transition metal salts, applied in chemical instruments and methods, catalyst activation/preparation, water treatment of special compounds, etc., can solve problems such as ozone oxidation reactions that have not yet been seen, and achieve environmental and energy problems and high effluent quality , the effect of high catalytic activity

Pending Publication Date: 2020-11-27
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there is no use of transition metal carbides to efficiently catalyze the ozonation reaction of organic pollutants in sewage.

Method used

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  • Supported transition metal carbide as well as preparation method and application thereof
  • Supported transition metal carbide as well as preparation method and application thereof
  • Supported transition metal carbide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1, preparation and catalytic oxidation reaction of supported transition metal carbides of the present invention

[0060] Supported transition metal carbide V 8 C 7 The preparation of / CS: reactant 0.47g ammonium metavanadate (NH 4 VO 3 ) and 4.0g glucose (C 6 h 12 o 6 ) was added to 40ml of deionized water at 60°C, and stirred continuously at constant temperature for 1h. The mixture obtained is added into a 60ml hydrothermal reaction kettle, and the stainless steel jacket of the hydrothermal reaction kettle is installed. The hydrothermal reactor was placed in an oven at 160° C. for 15 h. After natural cooling, the mixture was alternately washed several times with deionized water and ethanol, and centrifuged to obtain a brown precipitate (metal organic framework precursor). The precipitate was dried in a vacuum oven at 70°C, and the obtained dried precipitate was loaded into a corundum boat and placed in the center of a tube furnace. In the Ar flow of...

Embodiment 2

[0062] Example 2, preparation of supported transition metal carbides of the present invention and catalytic oxidation reaction Supported transition metal carbides W 2 The preparation of C / CS: reactant 1.07g phosphotungstic acid (H 3 PW 12 o 40 ) and 4.0g glucose (C 6 h 12 o 6 ) was added to 40ml of deionized water at 60°C, and stirred continuously at constant temperature for 1h. The mixture obtained is added into a 60ml hydrothermal reaction kettle, and the stainless steel jacket of the hydrothermal reaction kettle is installed. The hydrothermal reactor was placed in an oven at 160° C. for 15 h. After natural cooling, the mixture was alternately washed several times with deionized water and ethanol, and centrifuged to obtain a brown precipitate (metal organic framework precursor). The precipitate was dried in a vacuum oven at 70°C, and the obtained dried precipitate was loaded into a corundum boat and placed in the center of a tube furnace. In the Ar flow of 40ml / min, ...

Embodiment 3

[0064] Example 3, preparation and catalytic oxidation reaction of supported transition metal carbides of the present invention

[0065] Supported transition metal carbide Fe 3 The preparation of C / CS: reactant 1.08g ferric nitrate (Fe(NO 3 ) 3 ) and 4.0g glucose (C 6 h 12 o 6 ) was added to 40ml of deionized water at 60°C, and stirred continuously at constant temperature for 1h. The mixture obtained is added into a 60ml hydrothermal reaction kettle, and the stainless steel jacket of the hydrothermal reaction kettle is installed. The hydrothermal reactor was placed in an oven at 160° C. for 15 h. After natural cooling, the mixture was alternately washed several times with deionized water and ethanol, and centrifuged to obtain a brown precipitate (metal organic framework precursor). The precipitate was dried in a vacuum oven at 70°C, and the obtained dried precipitate was loaded into a corundum boat and placed in the center of a tube furnace. In an Ar flow of 40ml / min, t...

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Abstract

The invention provides a supported transition metal carbide as well as a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the supported transition metal carbide comprises the following steps: dissolving a carbon source and transition metal salt in a solvent, carrying out solvothermal reaction to obtain a metal organic frameworkprecursor, and carbonizing to obtain the supported transition metal carbide. When the supported transition metal carbide is used as a catalyst to catalyze an ozone oxidation reaction of organic matters in water, a free radical reaction is initiated, so that the removal rate of the organic matters in the sewage is high, the removal rate is high, the mineralization degree is high, and organic pollutants with complex types in the water can be subjected to non-selective catalytic oxidation; meanwhile, when the catalyst is used, the ozone oxidation reaction can be carried out at room temperature, the consumed time is short, and the energy consumption is low; and in addition, the supported transition metal carbide is simple in preparation process and easy to form. The supported transition metalcarbide can be used as the catalyst to alleviate the environmental and energy problems, and has very strong practicability and good market prospects.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a supported transition metal carbide and its preparation method and application. Background technique [0002] With the rapid development of industrialization, the problem of water pollution is becoming more and more serious, which has constituted a major threat to human survival and safety. At present, about 20% of the world's population cannot obtain safe domestic water to meet the basic needs of survival, and many countries have the phenomenon of water resource shortage and unbalanced utilization. According to the China Environmental Status Bulletin, my country's coastal waters and five of the seven major water systems are polluted to varying degrees. Under the new situation, sewage has a wide range of sources, complex components, and poor biodegradability. These problems have brought unprecedented challenges to traditional water treatment processes. How to eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J37/08B01J37/10C02F1/78C02F1/72C02F101/30C02F101/34
CPCB01J27/22B01J37/08B01J37/10C02F1/78C02F1/725C02F2101/30C02F2101/345C02F2305/023B01J35/40
Inventor 冯静陈权英蒋珍菊
Owner XIHUA UNIV
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