Homogeneous Catalytic Process for Degradation of Organic Pollutant Decabromodiphenyl Ether Using Keggin Type Heteropoly Compound H3PW12O40 as Catalyst

A technology of H3PW12O40 and heteropoly compounds is applied in the field of homogeneous catalysis of decabromodiphenyl ether, can solve problems such as pollution, and achieve the effects of simple process equipment, good environmental protection effect, and scientific and reasonable process flow

Inactive Publication Date: 2018-06-19
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

If Keggin-type heteropoly compounds H 3 PW 12 o 40 To solve the pollution problem caused by BDE209 is a difficult problem that those skilled in the art have been eager to solve, but have not yet solved

Method used

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  • Homogeneous Catalytic Process for Degradation of Organic Pollutant Decabromodiphenyl Ether Using Keggin Type Heteropoly Compound H3PW12O40 as Catalyst
  • Homogeneous Catalytic Process for Degradation of Organic Pollutant Decabromodiphenyl Ether Using Keggin Type Heteropoly Compound H3PW12O40 as Catalyst
  • Homogeneous Catalytic Process for Degradation of Organic Pollutant Decabromodiphenyl Ether Using Keggin Type Heteropoly Compound H3PW12O40 as Catalyst

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Embodiment Construction

[0020] refer to Figure 1-3 , a Keggin type heteropoly compound H of the present invention 3 PW 12 o 40 A homogeneous catalytic process for catalyst degradation of organic pollutant decabromodiphenyl ether, comprising the following steps:

[0021] (1) Keggin type heteropoly compound catalyst H 3 PW 12 o 40 Synthesis

[0022] Mix 99.95g of sodium tungstate, 32.23g of disodium hydrogen phosphate and 150mL of boiling water, add 80mL of concentrated sulfuric acid dropwise under magnetic stirring to obtain a solution with a light yellow precipitate, cool the solution to room temperature, add 60mL of diethyl ether for extraction, and the extracted lower layer The yellow heteropolyacid ether complex is purged by air flow to obtain a yellow solid, and dried in a vacuum oven at 70°C for 7-8 hours to obtain Keggin type heteropoly compound catalyst H 3 PW 12 o 40 ; figure 1 It is the Keggin type heteropoly compound catalyst H synthesized in the present invention 3 PW 12 o 40...

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Abstract

The invention is a homogeneous catalytic process for degrading organic pollutants decabromodiphenyl ether using Keggin type heteropoly compound H3PW12O40 as a catalyst. The characterization of H3PW12O40, the homogeneous catalysis of the organic pollutant decabromodiphenyl ether, the homogeneous catalytic degradation effect and the analysis of the degradation products have scientific and reasonable process flow, simple process equipment, high degradation efficiency, less energy consumption, and the catalyst With the advantages of high comprehensive utilization rate and good environmental protection effect, it solves the problem of removing organic pollutant decabromodiphenyl ether in the environmental field.

Description

technical field [0001] The invention belongs to the field of environmental catalysis, in particular to Keggin type heteropoly compounds H 3 PW 12 o 40 A homogeneous catalytic process for catalyst degradation of organic pollutant decabromodiphenyl ether. Background technique [0002] Polybrominated diphenyl ethers (PBDEs) have been widely used as high-efficiency flame retardants in plastic products, and have aroused high environmental concerns because of their global distribution and good bioaccumulation. PBDEs have been detected in certain sediments, marine organisms, food samples, human blood and tissues. PBDEs have been reported to affect enzyme activity and act as endocrine disruptors, causing damage to the nervous system during critical periods of brain development. Among the typical commercial PBDEs products (such as penta-, octa-, and deca-bromodiphenyl ethers), the demand for decabromodiphenyl ether (BDE209) is the largest, accounting for about 75% of the total us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/38A62D101/28A62D101/22
Inventor 刘春光刘爽郑婷
Owner NORTHEAST DIANLI UNIVERSITY
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