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A kind of supported metal porphyrin/phthalocyanine catalyst, its preparation method and application

A metalloporphyrin and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low binding force of metalloporphyrin/phthalocyanine, low degradation efficiency of organic pollutants, metal Problems such as porphyrin/phthalocyanine shedding, to achieve the effects of reducing agglomeration, improving degradation efficiency, and improving oxidative degradation performance

Active Publication Date: 2022-05-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects or improvement needs of the prior art, the purpose of the present invention is to provide a simple green preparation method, and a highly active supported metalloporphyrin / phthalocyanine catalyst and its application, to solve the problem of using chemically synthesized metalloporphyrin in the prior art. The phylloline / phthalocyanine catalyst uses toxic and harmful reagents, and the operation is complicated; and it is loaded by impregnation, smearing, etc., and the binding force between the carrier and the metalloporphyrin / phthalocyanine is low, and the metalloporphyrin / phthalocyanine is easy to fall off from the carrier during use. Technical problems such as low pollutant degradation efficiency

Method used

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  • A kind of supported metal porphyrin/phthalocyanine catalyst, its preparation method and application
  • A kind of supported metal porphyrin/phthalocyanine catalyst, its preparation method and application
  • A kind of supported metal porphyrin/phthalocyanine catalyst, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A method for preparing hemin (FePP, CAS: 16009-13-5) / titanium dioxide composite material based on ball milling, comprising the following steps:

[0071] (1) Weigh 0.05 g of hemin (FePP), 0.5 g of titanium dioxide, add 5 mL of water, put 30 g of zirconia ball milling beads into a zirconia ball mill jar, and mill at a speed of 400 rpm for 2 hours.

[0072] (2) Transfer the milled composite material liquid to a liquid storage tank, clean the zirconia balls and the ball milling tank with distilled water, and transfer the remaining adhered composite catalyst to the liquid storage tank. The ball milling liquid was diluted and quantified to 10g / L.

[0073] (3) The ball mill liquid was dried in an oven at 70°C to obtain a composite catalyst powder, and the carrier titanium dioxide and hemin (porphyrin iron) / titanium dioxide were subjected to infrared testing respectively.

[0074] From attached figure 1 It can be seen that the mechanochemical ball milling method can well load...

Embodiment 2

[0076] A method for preparing iron phthalocyanine (FePC, CAS: 132-16-1) / silicon dioxide composite material based on mechanochemical method (ball milling), comprising the following steps:

[0077] (1) Weigh 0.5 g of cobalt phthalocyanine, 2.5 g of silicon dioxide, add 10 mL of water, and put 30 g of zirconia ball milling beads into a zirconia ball mill jar, and mill at a speed of 400 rpm for 2 hours.

[0078] (2) Transfer the milled composite material liquid to a liquid storage tank, clean the zirconia balls and the ball milling tank with distilled water, and transfer the remaining adhered composite catalyst to the liquid storage tank. The ball milling liquid was diluted and quantified to 10g / L.

Embodiment 3

[0080] With the hemin (FePP) / titanium dioxide prepared in Example 1, and according to the preparation method of Example 1, prepared respectively 2 o 3 , SiO 2 , ZnO as the carrier of hemin loading, adding Potassiumhydrogen peroxymonosulfate (PMS) as an activator to carry out the degradation experiment of pollutant trichlorophenol (TCP):

[0081] (1) Potassium monopersulfate (PMS) 50mM: Weigh 3.0738g of potassium monopersulfate (PMS) and dissolve it in 200mL of deionized water to prepare a concentration of 50mM.

[0082] (2) Weigh 0.0987 g of trichlorophenol (TCP) and dissolve it in a 1 L volumetric flask to obtain a stock solution of trichlorophenol (TCP) with a concentration of 500 μM.

[0083] (3) Add 20 mL of trichlorophenol (TCP) stock solution to four 50 mL beakers, add 28.9 mL of deionized water, add 1 mL of PMS stock solution, the concentration of TCP in the system is 200 μM, the pH of the system is 5, and finally add four kinds of 100 μL of catalytic solution (where...

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Abstract

The invention belongs to the field of catalyst and environmental water pollution treatment, and in particular relates to a supported metalloporphyrin / phthalocyanine catalyst, its preparation method and application. The present invention simply and efficiently realizes the loading of metalloporphyrin / phthalocyanine on the carrier material by mechanochemical method, greatly reduces the agglomeration of metalloporphyrin / phthalocyanine, and because the carrier material and metalloporphyrin / phthalocyanine There is an electron transfer between cyanines, which changes the electron cloud density around the central metal ion of porphyrin / phthalocyanine, promotes the heterolysis of hydroperoxides, and enhances the activity. The present invention loads the metalloporphyrin / phthalocyanine catalyst on the surface of the carrier material through the mechanochemical method, and the obtained loaded metalloporphyrin / phthalocyanine catalyst is more effective for organic pollutants than the metalloporphyrin / phthalocyanine catalyst before loading. The oxidative degradation performance is greatly improved, and the applicable pH range of the catalyst is also greatly expanded.

Description

technical field [0001] The invention belongs to the field of catalyst and environmental water pollution treatment, in particular, it relates to a supported metalloporphyrin / phthalocyanine catalyst, its preparation method and application; more specifically, it relates to a supported metalloporphyrin prepared based on a mechanochemical method Phenyl / phthalocyanine catalysts, their preparation and applications. Background technique [0002] With the development of printing and dyeing textile, medicine, coking, and chemical industries, the discharge of refractory organic pollutants in sewage is increasing, and the types are becoming more and more complex. These refractory organic pollutants are toxic and harmful, and have carcinogenic, teratogenic and mutagenic effects. , Discharged into water bodies has caused great harm to the ecological environment and human health. It is difficult to degrade and remove these pollutants by traditional physical and chemical methods and biolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J21/06B01J37/00C02F1/32C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J37/0036B01J31/183B01J31/1625B01J21/063C02F1/32C02F1/722C02F1/725B01J2531/025B01J2531/842C02F2101/30C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2101/308C02F2305/10C02F2305/023B01J35/39
Inventor 胡敬平陈思静杨小容武龙胜丁晓宇潘可亮侯慧杰刘冰川杨家宽
Owner HUAZHONG UNIV OF SCI & TECH
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