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A kind of supported solid catalyst for Fenton reaction and preparation method thereof

A technology of solid catalyst and Fenton reaction, applied in the field of supported solid catalyst, Fenton reaction, its preparation, and heterogeneous Fenton catalyst, can solve the problems of low iron leaching rate, non-recyclable recovery, difficulty, etc. Large surface area, good decolorization effect and large pore volume

Active Publication Date: 2018-07-06
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For the above-mentioned problems existing in the prior art, the object of the present invention is to provide a kind of loaded solid catalyst, its preparation method and application, the required material of the present invention is all easy to obtain, and synthesis process is simple, and the loaded solid catalyst of synthesis has It has the advantages of good catalytic effect, recyclable use, no need to adjust the pH of the system, and low iron leaching rate. The catalytic treatment of 20mg / L rhodamine B solution simulated wastewater can achieve a decolorization rate of 96.9%, and the iron leaching rate is low, at 0.029- Within the range of 0.059mg / L, it also overcomes the shortcomings of iron sludge generation in the classic Fenton, the need to adjust the pH after the reaction before and after the reaction, and the catalyst is not recyclable or difficult to recycle.

Method used

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  • A kind of supported solid catalyst for Fenton reaction and preparation method thereof
  • A kind of supported solid catalyst for Fenton reaction and preparation method thereof
  • A kind of supported solid catalyst for Fenton reaction and preparation method thereof

Examples

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Effect test

Embodiment 1

[0063] (1) Take 50g of volcanic rock particles purchased from a company in Beijing, ultrasonically clean them with 100ml of acetone and water for 30min, filter, and dry for later use.

[0064] (2) Grinding the dried volcanic rock particles with a universal grinder for 5 minutes to obtain volcanic rock particles with a particle size of 50-100 μm.

[0065] (3) the volcanic rock particle that 10g above-mentioned pulverization obtains and 4g magnetic nanoparticle Fe 3 o 4 (Particle size is 5-20nm) add 30ml of water to mix, ultrasonic 30min, get volcanic rock particles and magnetic nanoparticles Fe 3 o 4 mixture.

[0066] (4) Place the ultrasonicated mixture in a desiccator at 80° C. for aging for 24 hours. The mixture of aged volcanic rock particles and magnetic nanoparticles was calcined at 650° C. for 1 hour to obtain a supported solid catalyst.

[0067] The supported solid catalyst is used as a catalyst for treating rhodamine B wastewater by the Fenton process.

[0068] ...

Embodiment 2

[0078] (1) Take 50 g of volcanic rock particles purchased from a company in Beijing, ultrasonically clean them with 100 ml of acetone and water for 60 min, filter, and dry for later use.

[0079] (2) Grinding the dried volcanic rock particles for 5 minutes with a universal pulverizer to obtain 50-100 μm volcanic rock particles.

[0080] (3) 6g of the above-mentioned volcanic rock particles are mixed with 2g of magnetic nanoparticles (5-20nm in particle size) and 10ml of water, and ultrasonicated for 30min to obtain volcanic rock particles and magnetic nanoparticles Fe 3 o 4 mixture.

[0081] (4) Place the mixture obtained in step (3) in a desiccator at 100° C. for aging for 24 hours. The mixture of aged volcanic rock particles and magnetic nanoparticles was calcined at 660° C. for 1 hour to obtain a supported solid catalyst.

[0082] The calcined supported solid catalyst is used as a catalyst for treating rhodamine B wastewater by the Fenton method.

[0083] Figure 5 Be ...

Embodiment 3

[0087] (1) Take 50g of volcanic rock particles purchased from a company in Beijing, ultrasonically clean them with 100ml of acetone and water for 30min, filter, and dry for later use.

[0088] (2) Grinding the dried volcanic rock particles for 3 minutes with a universal pulverizer to obtain 50-100 μm volcanic rock particles.

[0089] (3) 10g of the above volcanic rock particles and 10g of magnetic nanoparticles Fe 3 o 4 (Particle size is 5-20nm) add 20ml of water to mix, ultrasonic 60min, get volcanic rock particles and magnetic nanoparticles Fe 3 o 4 mixture.

[0090] (4) Place the mixture obtained in step (3) in a desiccator at 80° C. for aging for 48 hours. The mixture of aged volcanic rock particles and magnetic nanoparticles was calcined at 500° C. for 1 hour to obtain a supported solid catalyst.

[0091] The supported solid catalyst of this embodiment is used for the rhodamine B solution with a heterogeneous catalytic concentration of 20 mg / L, and the test method an...

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Abstract

The invention discloses a supported solid catalyst, a preparing method thereof and the application thereof as a heterogeneous Fenton catalyst. The supported solid catalyst is composed of volcanic particles and magnetic nano-particles Fe3O4 supported by the volcanic particles. The preparing method comprises the steps of cleaning and grinding volcanic till the particle diameter of obtained volcanic particles is smaller than 200 microns; mixing the volcanic particles and magnetic nano-particles with water, conducting ultrasonic treatment, and conducting aging at 80-110 DEG C; conducting calcination to obtain the supported solid catalyst. The supported solid catalyst can serve as a heterogeneous catalyst to be applied to Fenton reaction. The adopted raw materials are cheap and easy to obtain, synthesis process is simple, an organic wastewater treatment simulating effect is good, iron leaching rate is low and is between 0.029 mg / L and 0.059 mg / L, recycling can be achieved through filtration and other methods, and application prospects are broad.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a loaded solid catalyst, its preparation method and application, in particular to a catalyst made of magnetic nanoparticles Fe 3 o 4 A solid catalyst supported on volcanic rock, a method for its preparation, and its use as a heterogeneous Fenton catalyst for the Fenton reaction. Background technique [0002] People's awareness of environmental protection has gradually increased, and more and more attention has been paid to the treatment of water pollution. The refractory substances in organic wastewater generally include aromatic compounds, which are not only difficult to degrade but also cause harm to humans and aquatic animals. Rhodamine B is such an aromatic compound containing xanthene groups. [0003] There are many methods for treating organic wastewater, such as physical methods, chemical methods, physicochemical methods, electrochemical methods, and biologica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C02F1/72C02F101/38
CPCB01J23/002B01J23/78B01J2523/00C02F1/722C02F1/725C02F2101/308C02F2305/026B01J2523/12B01J2523/22B01J2523/31B01J2523/41B01J2523/23B01J2523/13B01J2523/47
Inventor 邢建民田江南杨茂华穆廷桢钟伟
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI