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Preparation method of high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide

A core-shell structure and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of repeated cycle performance degradation and low efficiency of organic degradation.

Active Publication Date: 2017-09-12
黑龙江省工研龙创环境产业集团有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the existing Fenton catalysts such as the low efficiency of degrading organic matter and the serious decline in the performance of multiple cycles, and to provide a method for preparing an efficient heterogeneous Fenton-like catalyst core-shell structure iron polysulfide

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  • Preparation method of high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide
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  • Preparation method of high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide

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specific Embodiment approach 1

[0026] Embodiment 1: This embodiment is a method for preparing an efficient heterogeneous Fenton-like catalyst core-shell structure iron polysulfide, which is specifically completed according to the following steps:

[0027] 1. Add thiourea and iron powder into absolute ethanol, and then ultrasonically disperse at an ultrasonic power of 60W for 3 minutes to 10 minutes to obtain a reaction solution;

[0028] The mass ratio of the iron powder described in step 1 to absolute ethanol is (0.3g~1g):50mL;

[0029] The mol ratio of iron powder and thiourea described in step 1 is (0.5~1.5):(0.3~3.5);

[0030] 2. Add the reaction solution obtained in step 1 into a hydrothermal reaction kettle, and then perform a hydrothermal reaction at a temperature of 180°C to 220°C for 20h to 24h to obtain a mixed solution containing a hydrothermal reaction product;

[0031] 3. Centrifuge the mixed solution containing the hydrothermal reaction product at a centrifugal speed of 4000r / min to 5000r / min...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that: the particle size of the iron powder in Step 1 is 4 μm˜8 μm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the volume ratio of the iron powder described in step 1 to absolute ethanol is (0.3g-0.56g):50mL. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide and relates to a preparation method of a fenton catalyst. The invention aims at solving the problems that an existing fenton catalyst has low organism degrading efficiency and performance decreases seriously after multiple cycles. The method comprises the following steps: 1, preparing reaction liquid; 2, preparing mixed liquid containing a hydrothermal reaction product; 3, centrifuging to obtain the hydrothermal reaction product; 4 cleaning and drying to obtain the high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide. The degrading rate of the high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide prepared by the preparation method disclosed by the invention to degrade rhodamine B can reach 97% within 30min. The invention provides the preparation method capable of obtaining the high-efficient heterogenous fenton catalyst core shell structure ferric polysulfide.

Description

technical field [0001] The invention relates to a preparation method of Fenton catalyst. Background technique [0002] As the pillar of the national economy, the chemical industry has made great contributions to the rapid development of the economy, but it has also brought more and more pollution problems, such as water pollution, soil pollution and air pollution. In soil pollution and water pollution, aromatic hydrocarbon pollutants represented by phenol seriously harm the human body and the ecological environment. Advanced catalytic oxidation (Fenton oxidation and Fenton-like oxidation) reacts at normal temperature and pressure. It is easy to operate and has strong oxidation ability. It has broad application prospects in soil remediation and organic wastewater treatment. In the current Fenton oxidation technology, the Fenton catalyst cannot be used in a neutral system, and the performance of multiple cycles is severely reduced, and the degradation rate reaches 10% of the ...

Claims

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Application Information

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IPC IPC(8): B01J27/043C02F1/72
CPCC02F1/725B01J27/043C02F2305/026B01J35/397
Inventor 姚忠平张凌儒夏琦兴李东琦孟艳秋陈家鑫王建康姜兆华
Owner 黑龙江省工研龙创环境产业集团有限公司
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