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A kind of preparation method of high-efficiency heterogeneous Fenton-like catalyst iron polysulfide

A catalyst, polysulfide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of repeated cycle performance decline, low efficiency of degrading organic matter, etc., to achieve uniform size and degradation effect. Good results

Active Publication Date: 2019-05-17
黑龙江省工研院资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the efficiency of the existing Fenton catalyst to degrade organic matter is low and the performance of multiple cycles is seriously reduced, and to provide a method for preparing an efficient heterogeneous Fenton-like catalyst iron polysulfide

Method used

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  • A kind of preparation method of high-efficiency heterogeneous Fenton-like catalyst iron polysulfide
  • A kind of preparation method of high-efficiency heterogeneous Fenton-like catalyst iron polysulfide
  • A kind of preparation method of high-efficiency heterogeneous Fenton-like catalyst iron polysulfide

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specific Embodiment approach 1

[0022] Specific embodiment one: present embodiment is a kind of preparation method of high-efficiency heterogeneous Fenton-like catalyst iron polysulfide, specifically completes according to the following steps:

[0023] 1. Iron powder, Na 2 S 2 o 3 and sublimated sulfur were added to deionized water, and then stirred evenly to obtain a reaction solution;

[0024] The concentration of iron powder in the reaction solution described in step 1 is 0.1mol / L~0.5mol / L;

[0025] Na in the reaction solution described in step 1 2 S 2 o 3 The concentration is 0.1mol / L~0.5mol / L;

[0026] The concentration of sublimed sulfur in the reaction solution described in step 1 is 0.05mol / L~0.2mol / L;

[0027] 2. Add the reaction solution into the hydrothermal reaction kettle, then feed nitrogen into the hydrothermal reaction kettle, and then conduct a hydrothermal reaction in a nitrogen atmosphere and at a temperature of 160°C to 200°C for 18h to 25h to obtain a hydrothermal reaction product...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the iron powder in step 1 is 100 nm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the concentration of iron powder in the reaction solution described in step 1 is 0.1 mol / L-0.2 mol / L. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a high-efficiency heterogeneous Fenton catalyst iron polysulfide and relates to the preparation method of a Fenton catalyst. The invention aims at solving the problems that an existing Fenton catalyst has low efficiency in degradation of organic matters and is seriously reduced in manifold cycle performance. The method comprises the following steps: firstly, adding iron powder, Na2S2O3 and sublimed sulfur into deionized water to obtain reaction liquid; secondly, carrying out hydrothermal reaction to obtain a mixed solution containing a hydrothermal reaction product; thirdly, carrying out centrifuging to obtain the hydrothermal reaction product; and fourthly, cleaning and drying to obtain the high-efficiency heterogeneous Fenton catalyst iron polysulfide. The high-efficiency heterogeneous Fenton catalyst iron polysulfide prepared by the preparation method disclosed by the invention has the advantages that under the condition of not adjusting the pH value of a Rhodamine B aqueous solution, the degradation effect is still good as well as the degradation rate is relatively high and 83 percent or above of Rhodamine B can be degraded at 10 minutes. The high-efficiency heterogeneous Fenton catalyst iron polysulfide can be obtained according to the preparation method.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/043C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J27/043C02F1/722C02F1/725C02F2101/34C02F2101/36C02F2101/38C02F2305/026
Inventor 姜兆华张凌儒陈家鑫姚忠平夏琦兴王建康李东琦
Owner 黑龙江省工研院资产经营管理有限公司