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Preparation method of loading iron based metal organic skeleton out phase Fenton catalyst and application thereof

An iron-based metal, organic framework technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. It can improve the Fenton treatment effect, excellent adsorption performance and high catalytic activity.

Inactive Publication Date: 2014-07-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction efficiency of most traditional heterogeneous Fenton technologies is not high when applied; the effect is still good in the range of pH value 2 ~ 4; the stability of the catalyst is poor, and the active component iron ions are easy to dissolve during the reaction process. Cause catalyst deactivation, difficult to reuse and other problems

Method used

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  • Preparation method of loading iron based metal organic skeleton out phase Fenton catalyst and application thereof
  • Preparation method of loading iron based metal organic skeleton out phase Fenton catalyst and application thereof
  • Preparation method of loading iron based metal organic skeleton out phase Fenton catalyst and application thereof

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Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of substrate MIL-100(Fe)

[0031] Hydrothermal method, the molar ratio of iron powder, trimesic acid, hydrofluoric acid, nitric acid and deionized water is 1.0:0.66:2.0:1.2:280; the constant temperature reaction temperature is 150°C, and the time is 12 h The temperature of hot water purification is 80°C, and the stirring time is 5 h; the temperature of ethanol purification is 60°C, and the stirring time is 3 h; the temperature of vacuum drying is 70°C, and the time is 12 h.

[0032] (2) The construction process and characterization of the supported Fe-based metal-organic framework heterogeneous Fenton catalyst, the specific steps are as follows:

[0033] Add 0.1 g of MIL-100(Fe) prepared in (1), 0.6 g of polyvinylpyrrolidone, and 13 mL of deionized water into a 20 mL polytetrafluoroethylene reactor, stir well, then add 0.028 g of anhydrous Ferric chloride, stir well, then add 0.38 g of potassium iodide. The mixed solution was stirred on a magnetic stir...

Embodiment 2

[0038] A supported iron-based metal-organic framework heterogeneous Fenton catalyst Fe II The preparation method of MIL-100(Fe), using MIL-100(Fe) as the matrix, supports the divalent iron component by hydrothermal method, and obtains Fe II MIL-100(Fe) is a supported iron-based metal-organic framework heterogeneous Fenton catalyst.

[0039] The method includes the following steps:

[0040] (1) Preparation of matrix MIL-100(Fe): Mix iron powder, trimesic acid, hydrofluoric acid, nitric acid and deionized water evenly, then place in a polytetrafluoroethylene hydrothermal reactor, react at constant temperature, and filter After the light orange solid product was obtained, it was washed with deionized water. It was then further purified by two steps: 1) hot water purification; 2) hot ethanol purification. Finally the solid was dried in a vacuum oven.

[0041] (2) Mix MIL-100(Fe) prepared in step (1) with dispersant, anhydrous ferric chloride, deionized water, and reducing agen...

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Abstract

The invention relates to a preparation method of a loading iron based metal organic skeleton out-phase Fenton catalyst and an application thereof. The preparation method comprises the following steps of by taking MIL-100 (Fe) as a basal body, loading a ferrous component through a hydrothermal method so as to obtain the loading iron based metal organic skeleton out-phase Fenton catalyst, namely Fell@ MIL-100 (Fe). The catalyst is used for degrading an organic pollutant in waste water by using an out-phase Fenton catalyst system. Compared with the prior art, the loading catalyst prepared by the invention fully utilizes the advantages of MIL-100 (Fe) and a ferrous component in an out-phase Fenton reaction, so that the loading catalyst has high porosity, large specific surface area, and is stable in a water phase, catalytic activity sites are uniformly dispersed, the capacity is controllable and the like, meanwhile, the mutual circulation action of the Fe<2+> component in a carrier and a Fe<3+> in the basal body are utilized to further strengthen the Fenton reaction activity, the catalyst is suitable for removing refractory organics in waste water by catalytic oxidation of out-phase Fenton, the operation of the technology is simple, the cost is low, the preparation method is an efficient and energy-saving new technology, and the catalyst has the far-reaching application prospect and wide social and economic benefits.

Description

technical field [0001] The invention relates to the preparation and application of a heterogeneous Fenton catalyst in the technical field of water treatment, in particular to a preparation method and application of a supported iron-based metal-organic framework heterogeneous Fenton catalyst. Background technique [0002] Since the 1970s, water pollution has become a global problem. Among many pollution sources, organic pollutants have become an important source of pollution because of their complex composition, high toxicity, high content of organic matter, and poor biodegradability. Although some obvious results have been achieved in the treatment of organic refractory wastewater through legislation and economic means around the world, it is still a long and difficult process to achieve complete treatment. Therefore, it is an urgent problem to find a new, efficient, convenient, and environmentally friendly advanced treatment technology to enhance the removal of soluble and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C02F1/72
Inventor 曹同成吕焕莉赵国华赵红颖
Owner TONGJI UNIV
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