Monatomic catalytic material for removing refractory organic pollutants and preparation method of monatomic catalytic material

A technology of organic pollutants and catalytic materials, applied in the field of single-atom catalytic materials and their preparation, can solve the problems of narrow optimum pH range, easy to produce a large amount of iron sludge, low rate constant, etc., and achieve short preparation cycle and good repeatability Ease of use and preparation method

Pending Publication Date: 2021-08-10
山西铭睿恒信环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional homogeneous Fenton method still has a lot of defects including: (1) a large amount of H 2 o 2 ; (2) The optimum pH range is narrow (pH≤3); (3) It is easy t

Method used

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  • Monatomic catalytic material for removing refractory organic pollutants and preparation method of monatomic catalytic material
  • Monatomic catalytic material for removing refractory organic pollutants and preparation method of monatomic catalytic material
  • Monatomic catalytic material for removing refractory organic pollutants and preparation method of monatomic catalytic material

Examples

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Example Embodiment

[0037] The present invention provides a method for preparing a single atomic catalytic material removed by the removal of organic contaminants, including the following steps:

[0038]S1: Put a certain quality C 6 O 6 CH 4 N 2 O Grinding mixed for a certain period of time, low-temperature heating in quartz crucibles forms an eutectic mixture.

[0039] Further, in an alternative embodiment of the invention, C 6 O 6 CH 4 N 2 The mass ratio of O is 1: 0.5-5; preferably C 6 O 6 CH 4 N 2 The mass ratio of O is 1: 0.5-2; preferably C 6 O 6 CH 4 N 2 O The mass ratio is 1: 1.

[0040] Further, in an alternative embodiment of the invention, the temperature of the low temperature heating is 60-150 ° C.

[0041] S2: The eutectic mixture was further mixed with a certain mass of chloride after cooling to room temperature, and the mixture was heated under a nitrogen atmosphere to remove the residual salt, and the desired salt was removed. Carbon carrier.

[0042] Further, in an alternative embod...

Example Embodiment

[0058] Example 1

[0059] A method for preparing a single atomic catalytic material removable by the removal of organic pollutants, including the following steps:

[0060] 2.5GC 6 O 6 CH with equal quality 4 N 2 O Uniform mixed and ground for 10 minutes. The resulting mixture was placed in a quartz crucible to heat 1 h to form an eutectic mixture. Further and 10.0gZnCl after cooling to room temperature 2 Mixed and ground for 15 minutes. Further, heating the eutectic mixture was heated to 600 ° C with a heating rate of 2.5 ° C / min under a nitrogen atmosphere, for 1 hour. Thereafter, the obtained product is rinsed with deionized water to remove residual ZnCl 2 And placed in a vacuum drying tank. 0.2mol / LFECL 3 · 6h 2 The O solution was mixed with 0.2 g of N carbon material to obtain suspension, followed by removing the water in the mixture with a rotary evaporator, and using a conventional H 2 The reducing method further disperses the Fe atoms on an N carbon carrier to prepare a...

Example Embodiment

[0061] Example 2

[0062] A method for preparing a single atomic catalytic material removable by the removal of organic pollutants, including the following steps:

[0063] 2.5GC 6 O 6 CH with equal quality 4 N 2 O Uniform mixed and ground for 10 minutes. The resulting mixture was placed in a quartz crucible to heat 1 h to form an eutectic mixture. Further and 10.0gZnCl after cooling to room temperature 2 Mixed and ground for 15 minutes. Further, the eutectic mixture was heated to 600 ° C for 1 hour under a nitrogen atmosphere. Thereafter, the obtained product is rinsed with deionized water to remove residual ZnCl 2 And placed in a vacuum drying tank. 0.2mol / LFECL 3 · 6h 2 The O solution was mixed with 0.2 g of N carbon material to obtain suspension, followed by removing the water in the mixture with a rotary evaporator, and using a conventional H 2 The reducing method further disperse the Fe atoms in an N carbon carrier to prepare a target single atomic catalytic material. The m...

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Abstract

The invention provides a monatomic catalytic material for removing refractory organic pollutants and a preparation method of the monatomic catalytic material, and belongs to the field of environmental pollution treatment. The preparation method comprises the following steps: grinding and mixing a certain mass of hexachlorocyclohexane octahydrate and urea, and heating at low temperature to form a eutectic mixture; cooling the eutectic mixture to room temperature, performing grinding and mixing with a certain mass of chlorate, and performing heating to obtain an N-rich carbon carrier; mixing the dissolved iron salt with the N-rich carbon carrier to obtain a suspension, and further uniformly dispersing Fe atoms on the N-rich carbon carrier by adopting a traditional H2 reduction method. Fe species in the catalytic material exist in a monatomic form, and monatomic Fe is loaded on the surface of a carrier through metal-carrier interaction. The material has excellent organic pollutant degradation capability and good reusability in a larger pH range. The material is low in preparation cost, simple in preparation method, low in energy consumption and easy for large-scale preparation, and has a good application prospect in the field of pollution control.

Description

technical field [0001] The invention relates to the field of environmental pollution control, in particular to a single-atom catalytic material for removing refractory organic pollutants and a preparation method thereof. Background technique [0002] Most of the wastewater generated from pesticide, printing and dyeing, chemical, pharmaceutical and landfill sites is refractory organic wastewater, which usually contains high concentrations of organic pollutants that are biologically toxic and highly stable. Biochemical treatment technology is currently the dominant process because of its good economy and thorough removal of pollutants. However, the effluent after biochemical treatment still contains a large amount of refractory organic matter. Therefore, it is necessary to further adopt advanced treatment technology for tail water to meet the discharge requirements of industry standards. Traditional tail water advanced treatment technologies include adsorption method, coagula...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/18C02F1/72C02F101/30
CPCB01J27/24B01J37/18B01J35/008C02F1/725C02F1/722C02F2101/30C02F2305/026
Inventor 岳竞慧贾高彬韩应张里萌王建辉郭晓杰张岩
Owner 山西铭睿恒信环保工程有限公司
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