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Preparation method of nickel-based catalyst for treating alkaline organic waste water

A technology of organic wastewater treatment and nickel-based catalysts, applied in the direction of physical/chemical process catalysts, water/sewage treatment, chemical instruments and methods, etc., can solve problems that have not yet been seen, and achieve low pH value, simple methods, and catalytic high efficiency effect

Inactive Publication Date: 2019-01-18
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The highly dispersed sheet-like nickel-based catalyst proposed in this patent can efficiently activate S 2 o 8 2- , and there is no report on the preparation method of this nickel-based catalyst in the field of water treatment technology and environmental functional materials in the open literature

Method used

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  • Preparation method of nickel-based catalyst for treating alkaline organic waste water

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Embodiment 1

[0024] A preparation method for a nickel-based catalyst for alkaline organic wastewater treatment, comprising the steps of:

[0025] Step 1), preparation of nickel-based catalyst precursor:

[0026] Nickel chloride hexahydrate (NiCl 2 ·6H 2 O) or nickel nitrate hexahydrate [Ni(NO 3 ) 2 ·6H 2 O] Dissolve in neutral deionized water at room temperature to prepare 0.1 mol / L nickel salt solution A, heat up to 90°C and keep the temperature stable; use a peristaltic pump to add ammonia water at a flow rate of 1.0mL / min to make the pH of solution A Stop after reaching 9.0, get solution B, continue to keep warm for 0.5 h;

[0027] Add sodium hydroxide solution to solution B through a peristaltic pump, stir well, the molar ratio of sodium hydroxide to nickel salt is 2.1:1, and the flow rate is 1.0 mL / min; after the addition of sodium hydroxide solution is completed, the system reacts 1.0 h;

[0028] After the reaction, the reaction system, that is, the resulting suspension, was c...

Embodiment 2

[0032] A preparation method for a nickel-based catalyst for alkaline organic wastewater treatment, comprising the steps of:

[0033] Step 1), preparation of nickel-based catalyst precursor:

[0034] Nickel chloride hexahydrate (NiCl 2 ·6H 2 O) or nickel nitrate hexahydrate [Ni(NO 3 ) 2 ·6H 2 O] Dissolve in neutral deionized water at room temperature to prepare 0.1 mol / L nickel salt solution A, heat up to 90°C and keep the temperature stable; use a peristaltic pump to add ammonia water at a flow rate of 1.0mL / min to make the pH of solution A Stop after reaching 10.0, get solution B, continue to keep warm for 0.5 h;

[0035] Add sodium hydroxide solution to step solution B through a peristaltic pump, stir well, the molar ratio of sodium hydroxide to nickel salt is 2.1:1, and the flow rate is 1.0 mL / min; after the addition of sodium hydroxide solution is completed, the system reacts again 1.0 h;

[0036] After the reaction, the reaction system, that is, the resulting suspe...

Embodiment 3

[0040] A preparation method for a nickel-based catalyst for alkaline organic wastewater treatment, comprising the steps of:

[0041] Step 1), preparation of nickel-based catalyst precursor:

[0042] Nickel chloride hexahydrate (NiCl 2 ·6H 2 O) or nickel nitrate hexahydrate [Ni(NO 3 ) 2 ·6H 2 O] Dissolve in neutral deionized water at room temperature to prepare 0.1 mol / L nickel salt solution A, heat up to 90°C and keep the temperature stable; use a peristaltic pump to add ammonia water at a flow rate of 1.0mL / min to make the pH of solution A Stop after reaching 10.0, get solution B, continue to keep warm for 0.5 h;

[0043] Add sodium hydroxide solution to solution B through a peristaltic pump, stir well, the molar ratio of sodium hydroxide to nickel salt is 2.1:1, and the flow rate is 1.0 mL / min; after the addition of sodium hydroxide solution is completed, the system reacts 1.0 h;

[0044] After the reaction, the reaction system, that is, the resulting suspension, was co...

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Abstract

The invention belongs to the field of water treatment technology and environmental function materials, and particularly relates to a preparation method of a nickel-based catalyst for treating alkalineorganic waste water. Reagents used in the preparation method are nickel salt, ammonia water and sodium hydroxide, a nickel-based catalyst precursor can be synthesized in one step by adjusting the synthetic temperature as well as the concentration of a nickel salt, ammonia water and sodium hydroxide solution, the operation is simple and safe, nontoxic, harmless and easy to control; and the nickel-based catalyst can be prepared by virtue of simple calcination. The invention provides a method for preparing a high-dispersity flaky nickel-based catalyst, and the nickel-based catalyst prepared in acalcining manner at 450 DEG C under the protection of nitrogen has optimum activity; and the activation efficiency of an oxidant S2O8<2-> can be improved by utilizing the prepared high-performance and stable nickel-based catalyst, so that the reaction rate of an advanced oxidation technology in the alkaline organic waste water treatment can be increased, and the energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical fields of water treatment technology and environmental functional materials, and in particular relates to a preparation method of a nickel-based catalyst used for alkaline organic wastewater treatment. Background technique [0002] Nickel oxide is a p-type semiconductor (hole-type semiconductor) material with a wide bandgap of about 3.6eV. The crystal structure belongs to the cubic crystal system, face-centered cubic structure. Nickel oxide (NiO) has been extensively studied due to its special properties and potential applications in the fields of environment and energy. At present, nickel oxide plays an important role in the fields of water treatment adsorbents, catalysts, electrochemical supercapacitors and lithium-ion batteries. [0003] Alkaline high-concentration organic wastewater has the characteristics of strong alkalinity (pH=8.0-11.0), high concentration of biodegradable organic pollutants, and complex...

Claims

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Application Information

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IPC IPC(8): B01J23/755C02F1/72C02F101/30
CPCB01J23/755C02F1/725C02F2101/30
Inventor 刘琳东
Owner SOUTHWEST UNIVERSITY
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