Heterogeneous cage-form metal complex catalyst as well as preparation method and application thereof

A technology of metal complexes and catalysts, which is applied in the field of heterogeneous cage metal complex catalysts and their preparation and application, can solve the problems of small substrate contact area and low decolorization efficiency, and achieve simple preparation methods and avoid secondary Contamination, good reusability effect

Active Publication Date: 2014-08-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a heterogeneous cage metal complex catalyst and its preparation and application, which overcomes th

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of caged catalyst: CoCl 2 ·6H 2 O (47.6mg, 0.20mmol), trimesic acid (21.0mg, 0.10mmol), tetraamide macrocyclic iron compound TAML-Fe (2.8mg, 0.0021mmol) were added to the 3.5ml mixed solution, in which DMF (3.0ml ), H 2 O (0.5ml), put it in a 10ml scintillation vial, mix well, dissolve all the solids, put it in a constant temperature oven, react at 85°C for 12 hours, carry out suction filtration, clean the solids with methanol, put them in Dry in a vacuum oven at 50° C. for 4 hours to obtain a purple solid product, which is collected and stored with a yield of 12.8%.

[0022] Decolorization experiment of cage catalyst:

[0023] 1) The decolorization conditions are: 150mg / L reactive blue 19 dye solution, 5mmol / L hydrogen peroxide, 10mg / L catalyst, 0.1M carbonate buffer system (pH10), 25°C, decolorize for 60min.

[0024] 2) In a 250ml Erlenmeyer flask, add 100ml of the decolorization system, put it into the rotor, stir evenly on the stirrer, draw 3ml of th...

Embodiment 2

[0027] Preparation of cage catalyst: MnCl 2 4H 2 O (47.6mg, 0.20mmol), trimesic acid (21.0mg, 0.10mmol), tetraamide macrocyclic iron compound TAML-Fe (2.8mg, 0.0021mmol) were added to the 3.5ml mixed solution, in which DMF (3.0ml ), H 2 O (0.5ml), put it in a 10ml scintillation vial, mix well, dissolve all the solids, put it in a constant temperature oven, react at 85°C for 12 hours, carry out suction filtration, clean the solids with methanol, put them in Dry in a vacuum oven at 50° C. for 4 hours to obtain a light yellow solid product, which is collected and stored with a yield of 6%.

[0028] Decolorization experiment of cage catalyst:

[0029] 1) The decolorization conditions are: 150mg / L reactive blue 19 dye solution, 5mmol / L hydrogen peroxide, 10mg / L catalyst, 0.1M carbonate buffer system (pH10), 25°C, decolorize for 60min.

[0030] 2) In a 250ml Erlenmeyer flask, add 100ml of the decolorization system, put it into the rotor, stir evenly on the stirrer, draw 3ml of t...

Embodiment 3

[0033] Preparation of caged catalyst: CoCl 2 ·6H 2 O (47.6mg, 0.20mmol), trimesic acid (21.0mg, 0.10mmol), and tetrasulfonic acid phthalocyanine iron compound (0.0021mmol) were added to the 3.5ml mixed solution, in which DMF (3.0ml), H 2 O (0.5ml), put it in a 10ml scintillation vial, mix well, dissolve all the solids, put it in a constant temperature oven, react at 85°C for 12 hours, carry out suction filtration, clean the solids with methanol, put them in Dry in a vacuum oven at 50° C. for 4 hours to obtain a green solid product, which is collected and stored with a yield of 14%.

[0034] Decolorization experiment of cage catalyst:

[0035]1) The decolorization conditions are: Reactive Blue 19 is 150mg / L dye solution, hydrogen peroxide is 5mmol / L, catalyst is 10mg / L, 0.1M carbonate buffer system (pH10), 25℃, decolorize for 60min.

[0036] 2) In a 250ml Erlenmeyer flask, add 100ml of the decolorization system, put it into the rotor, stir evenly on the stirrer, draw 3ml of ...

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Abstract

The invention relates to a heterogeneous cage-form metal complex catalyst as well as a preparation method and application. The catalyst is prepared by forming a cage by virtue of benzene-containing carboxylic acid and metal salt, and adopting a solvothermal method in a mixed solvent by taking metal complex or biological enzyme as a template. The prepared cage-form catalyst loaded with the metal complex is used for decoloring printing and dyeing wastewater. The catalyst has the advantages that the preparation method is simple, the environment is mild, environmentally-friendly hydrogen peroxide is taken as an oxidizing agent, and organic pollutants such dyes can be effectively degraded in a wide alkaline pH range, namely 7-14; furthermore, the reusability is good, and the secondary pollution caused due to a high acidic environment of a homogeneous Fenton reagent and iron ions is avoided.

Description

technical field [0001] The invention belongs to the field of metal complex catalysts, in particular to a heterogeneous cage metal complex catalyst and its preparation and application. Background technique [0002] A large number of scholars have done a lot of work on the treatment of dye-containing wastewater with hydrogen peroxide. The treatment methods mainly include Fenton method, UV / Fenton method, UV / H 2 o 2 Method, Ultrasonic / H 2 o 2 Law, O 3 / H 2 o 2 law etc. by Fe 2+ and H 2 o 2 The composed Fenton reagent can generate strong oxidizing hydroxyl radicals (oxidation potential is 2.8V), which can remove toxic and refractory organic pollutants in wastewater, but there are many problems in practice, such as residual Fe in the reaction solution 2+ , It is easy to produce iron-containing sludge, causing secondary pollution. The reaction system is generally a strong acid system, and the printing and dyeing wastewater is mostly alkaline wastewater, which increases th...

Claims

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Application Information

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IPC IPC(8): B01J31/22C02F1/72C02F101/34C02F101/38
Inventor 毛志平尹冲张琳萍徐红钟毅闫阔党艳林立广黄瑜婷鲁济龙
Owner DONGHUA UNIV
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