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Preparation method and application of iron alloy catalyst

A catalyst and ferroalloy technology, which is applied in the field of ferroalloy catalyst preparation, can solve the problems of difficult treatment of coal chemical wastewater, low efficiency of organic matter, high activation energy consumption, etc., and achieve the solution of secondary pollution of heavy metals, strong applicability, and low dissolution rate Effect

Pending Publication Date: 2021-08-03
清创人和生态工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the alkali activation process is easy to corrode the equipment; the ultraviolet light activation consumes a lot of energy and is difficult to treat coal chemical wastewater with high chroma; and the electro-activation process produces secondary pollution, and the organic matter in the high-salt wastewater is treated with low efficiency and Affected by a large number of inorganic ions in a high-salt environment during use

Method used

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  • Preparation method and application of iron alloy catalyst
  • Preparation method and application of iron alloy catalyst
  • Preparation method and application of iron alloy catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] This embodiment provides a method for preparing a Fe-Ni-Cu / C metal catalyst, comprising the following steps;

[0030] Step 1: Fe(NO 3 ) 3 9H 2 O, Ni(NO 3 ) 3 ·6H 2 O, Cu(NO 3 ) 3 ·6H 2 O is mixed and dissolved in 100mL distilled water with a molar ratio of Fe / Ni / Cu=8:1:1, and stirred to obtain a uniform metal salt solution; It is fully impregnated, and after impregnating for 24 hours, it is dried in an oven at 80°C for 8 hours to obtain the impregnated catalyst;

[0031] Step 2: Place the impregnated catalyst in a tube furnace under N 2 / H 2 =7 / 1 under the reducing atmosphere of high-temperature calcination, the calcination temperature is 650°C, and the calcination time is 4h, and the Fe-Ni-Cu / C metal catalyst is obtained.

[0032] Using the effluent of the secondary sedimentation tank of a coking plant as the target pollutant, the degradation degree of COD of the sewage represents the treatment efficiency of organic wastewater, and the Fe-Ni-Cu / C metal catal...

Embodiment 2

[0036] This embodiment provides a method for preparing a Fe-Co-Mn / C metal catalyst, comprising the following steps;

[0037] Step 1: Fe(NO 3 ) 3 9H 2 O, Co(NO 3 ) 3 ·6H 2 O, MnCl 2 ·6H 2 O was mixed and dissolved in 100mL of distilled water at a molar ratio of Fe / Ni / Cu=10:1:5, and stirred to obtain a uniform metal salt solution; 5g of cordierite was added to the above metal salt solution, and stirred continuously at 30°C to Fully impregnated, after 14 hours of immersion, dried in an oven at 60°C for 12 hours to obtain the impregnated catalyst;

[0038] Step 2: Place the impregnated catalyst in a tube furnace under N 2 / H 2 =10 / 1 under a reducing atmosphere for high-temperature calcination, the calcination temperature is 250°C, and the calcination time is 9h, to obtain the Fe-Co-Mn / C metal catalyst.

Embodiment 3

[0040] This embodiment provides a method for preparing a Fe-Ti-Sn / C metal catalyst, comprising the following steps;

[0041] Step 1: FeCl 3 ·6H 2 O, TiCl 4 and SnCl 2 Mix and dissolve in 100mL distilled water according to the molar ratio Fe / Ti / Sn=10:1:5, and stir to obtain a uniform metal salt solution; add 8g molecular sieve ZMS-5 to the above metal salt solution, and keep stirring at 80°C to make It is fully impregnated, and after the impregnation is completed for 0.5h, it is dried in an oven at 90°C for 6h to obtain the impregnated catalyst;

[0042]Step 2: Place the impregnated catalyst in a tube furnace under N 2 / H 2 =5 / 1 under a reducing atmosphere for high-temperature calcination, the calcination temperature is 850°C, and the calcination time is 2h, to obtain the Fe-Ti-Sn / C metal catalyst.

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Abstract

The invention provides a preparation method and application of an iron alloy catalyst. The iron alloy catalyst is prepared by taking a porous carrier as a matrix to load an active component through an impregnation-high-temperature calcination two-step method. The iron alloy catalyst is prepared by combining two steps, namely an impregnation process and high-temperature calcination, so the activation efficiency of persulfate is improved, and the degradation efficiency of organic matters is improved; and as the catalyst activates persulfate oxidation to degrade organic waste water, a reaction process is simple in operation process, wide in wastewater pH application range, capable of being carried out at normal temperature and normal pressure, free of secondary pollution and suitable for treatment of various organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of water pollution treatment, and in particular relates to a preparation method and application of an iron alloy catalyst. Background technique [0002] With the rapid rise of the chemical industry, the discharge of industrial wastewater has increased year by year, and the discharge of organic pollutants such as phenols, polycyclic aromatic hydrocarbons and heterocyclic compounds has always been at the forefront of water pollution. Industrial wastewater, especially coking industry wastewater, has the characteristics of high concentration and stable structure, which poses a serious threat to my country's precious water resources. Therefore, how to effectively remove these high-concentration refractory organic wastewater has become a hot issue in water treatment. [0003] The heterogeneous catalyzed persulfate technology uses solid material catalysts to activate persulfate to obtain sulfate radicals to mineral...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/835B01J23/889B01J35/08C02F1/72C02F101/30
CPCB01J23/755B01J23/8892B01J23/835B01J23/75C02F1/722C02F2101/30C02F2209/08B01J35/51Y02W10/37
Inventor 刘世斌原沁波白玉
Owner 清创人和生态工程技术有限公司
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