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Magnetic supported ozone catalyst and preparation method and use method thereof

A catalyst and ozone technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as unfavorable recycling and reuse, easy clogging of pores, long reaction time, etc. , achieve the effects of shortening the reaction residence time, high loading rate and low stirring energy consumption

Pending Publication Date: 2022-08-05
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a magnetically supported ozone catalyst and its preparation method and use method, so as to solve the problem that the existing catalyst has a long reaction time, easy clogging and hardening of pores, and is not conducive to recycling and reuse, etc. technical problem

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  • Magnetic supported ozone catalyst and preparation method and use method thereof
  • Magnetic supported ozone catalyst and preparation method and use method thereof
  • Magnetic supported ozone catalyst and preparation method and use method thereof

Examples

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preparation example Construction

[0053] The preparation method of the magnetically supported ozone catalyst provided by the present application comprises the following steps:

[0054] Step S100: Dissolve the trivalent iron salt and the divalent iron salt in water according to a certain molar ratio, isolate the air and stir until fully dissolved. Wherein, the ferric salt is any one in ferric chloride, ferric sulfate or ferric nitrate; the ferric salt is any one in ferrous chloride, ferrous sulfate or ferrous nitrate; the ferric salt added The molar ratio of the salt to the ferrous salt is 2:0.5-1.0.

[0055] Step S200: Add the metal salt M into the solution prepared in step S100, isolate the air and stir until fully dissolved. Wherein, the metal salt M is at least two types of salts in manganese salt, copper salt, zinc salt, cobalt salt, nickel salt, cerium salt and molybdenum salt; specifically, it can be manganese sulfate, manganese chloride, manganese nitrate, copper sulfate, Copper chloride, copper nitra...

Embodiment 1

[0061] The present embodiment provides a method for preparing a magnetically supported ozone catalyst, comprising the following steps:

[0062] Step S100: put 100 mL of water in a 500 mL plastic beaker A, add 0.1 mol of ferric sulfate and 0.045 mol of ferrous sulfate, seal the beaker A with plastic wrap, isolate the air, and use magnetic stirring until fully dissolved, and the stirring time is about 5 minutes.

[0063] Step S200: Weigh 0.0025mol of manganese sulfate and 0.0025mol of copper sulfate, add them into the solution prepared in step S100, seal the plastic wrap to isolate the air, stir magnetically until fully dissolved and uniform, and the stirring time is about 5min.

[0064] Step S300: Weigh 4 mol of powdered activated carbon, add it into the solution prepared in step S200, seal the plastic wrap to isolate the air, stir magnetically until it is fully mixed to form a black suspension, and the stirring time is about 10min; The immersion time is about 12h. Among them,...

Embodiment 2

[0070] The present embodiment provides a method for preparing a magnetically supported ozone catalyst, comprising the following steps:

[0071] Step S100: put 100 mL of water in a 500 mL plastic beaker A, add 0.1 mol of ferric sulfate and 0.025 mol of ferrous sulfate, seal the beaker A with plastic wrap, isolate the air, and use magnetic stirring until fully dissolved, and the stirring time is about 5 minutes.

[0072] Step S200: Weigh 0.00625 mol of manganese sulfate, 0.00625 mol of copper sulfate, 0.00625 mol of cerium sulfate and 0.00625 mol of cobalt acetate, and add them to the solution prepared in step S100. About 5min.

[0073] Step S300: Weigh 4mol of powdered activated carbon, add it into the solution prepared in step S200, seal the plastic wrap to isolate the air, stir magnetically until it is fully mixed to form a black suspension, and the stirring time is 10 minutes; The immersion time is about 8h. Among them, the powdered activated carbon is a 200-mesh, analytic...

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Abstract

The invention provides a magnetic loaded ozone catalyst and a preparation method and a use method thereof, and the preparation method comprises the following steps: dissolving a trivalent iron salt and a divalent iron salt in water, and stirring and dissolving in the absence of air; adding a metal salt M, and stirring and dissolving while isolating air; adding powdered activated carbon, uniformly stirring to form a black suspension, and standing and impregnating for 6-24 hours in an air-isolated manner; dropwise adding the soaked turbid liquid into a container filled with a 1-10mol / L alkaline solution, and stirring for 20-60 minutes while isolating air to form a black turbid liquid; filtering the turbid liquid, and drying the solid at 60-100 DEG C for 2-4 hours; and under the protection of N2, calcining at 200-500 DEG C for 1-3 hours to obtain the magnetic loaded ozone catalyst which can be used for catalytic ozonation treatment of industrial wastewater and the like. The magnetic loaded ozone catalyst is micron-sized particles, is large in specific surface area, has catalytic active sites distributed on the outer surface, is easy to contact with pollutants and an oxidizing agent for catalysis, is high in reaction speed, does not have the problems of pore blockage and hardening, and is high in catalytic activity; and the material has magnetism and is convenient to recycle.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a magnetically supported ozone catalyst and a preparation method and use method thereof. Background technique [0002] The composition of industrial wastewater is complex, the water quality and quantity are complex and changeable, the treatment is difficult and expensive, especially the refractory industrial wastewater containing phenols, polycyclic aromatic hydrocarbons and heterocyclic compounds, which is highly toxic and easy to accumulate in organisms, causing serious harm Human health and ecological security have always been the "big problem" in the water treatment industry. However, it is difficult to effectively improve the quality and efficiency of the water treatment process with the traditional combination of physical, chemical and biological methods, and comprehensive prevention and control measures must be adopted to make the sewage discharge up to the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J35/02B01J35/10B01J37/02B01J37/03B01J37/08C02F1/78C02F101/38C02F101/36
CPCB01J23/8892B01J23/002B01J37/0213B01J37/035B01J37/082C02F1/78C02F1/725B01J2523/00C02F2101/40C02F2101/38C02F2101/36B01J35/40B01J35/617B01J35/615B01J2523/17B01J2523/72B01J2523/842B01J2523/3712B01J2523/845B01J2523/847B01J2523/27Y02W10/37
Inventor 张鹤清于金旗孙磊吴振军
Owner SCIMEE TECH & SCI CO LTD
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