Method for preparing camellia-flower-shaped nickel-based catalyst used for treating alkaline dyeing and finishing wastewater

A nickel-based catalyst, dyeing and finishing wastewater technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems that have not been seen yet, and achieve low impact , short time-consuming, low cost of raw materials

Inactive Publication Date: 2019-03-29
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The camellia-shaped 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 the camellia-shaped nickel-based catalyst in the field of water treatment technology and environmental functional materials in the open literature

Method used

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  • Method for preparing camellia-flower-shaped nickel-based catalyst used for treating alkaline dyeing and finishing wastewater
  • Method for preparing camellia-flower-shaped nickel-based catalyst used for treating alkaline dyeing and finishing wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a camellia-shaped nickel-based catalyst for treating alkaline dyeing and finishing wastewater, comprising the steps of:

[0024] S1, camellia-like β-Ni(OH) 2 Precursor preparation:

[0025] 0.208g nickel acetate [Ni(CH 3 COO) 2 4H 2 O] was dissolved in 23mL neutral deionized water to obtain a solution with a nickel acetate concentration of 0.836mmol / L, which was dissolved at room temperature and fully stirred to form a solution containing Ni(CH 3 COO) 2 mixed aqueous solution;

[0026] To Ni(CH 3 COO) 2 Add 1.0mL glycerol to the mixed aqueous solution, so that the volume ratio of deionized water to glycerol is 23:1, after stirring at room temperature for 10min, place the mixed system on a stainless steel React in a reaction kettle for 3.5 hours at 200°C;

[0027] After the obtained suspension was cooled to room temperature, it was centrifuged in a refrigerated centrifuge at a speed of 6000r / min for 10 minutes, then washed with distilled w...

Embodiment 2

[0031] A method for preparing a camellia-shaped nickel-based catalyst for treating alkaline dyeing and finishing wastewater, comprising the steps of:

[0032] S1, camellia-like β-Ni(OH) 2 Precursor preparation:

[0033] 0.208g nickel acetate [Ni(CH 3 COO) 2 4H 2 O] was dissolved in 23mL neutral deionized water to obtain a solution with a nickel acetate concentration of 0.836mmol / L, which was dissolved at room temperature and fully stirred to form a solution containing Ni(CH 3 COO) 2 mixed aqueous solution;

[0034] To Ni(CH 3 COO) 2 Add 1.0mL glycerol to the mixed aqueous solution, so that the volume ratio of deionized water to glycerol is 23:1, after stirring at room temperature for 10min, place the mixed system on a stainless steel React in a reaction kettle for 3.5 hours at 200°C;

[0035] After the obtained suspension was cooled to room temperature, it was centrifuged in a refrigerated centrifuge at a speed of 6000r / min for 10 minutes, then washed with distilled w...

Embodiment 3

[0039] A method for preparing a camellia-shaped nickel-based catalyst for treating alkaline dyeing and finishing wastewater, comprising the steps of:

[0040] S1, camellia-like β-Ni(OH) 2 Precursor preparation:

[0041] 0.208g nickel acetate [Ni(CH 3 COO) 2 4H 2 O] was dissolved in 23mL neutral deionized water to obtain a solution with a nickel acetate concentration of 0.836mmol / L, which was dissolved at room temperature and fully stirred to form a solution containing Ni(CH 3 COO) 2 mixed aqueous solution;

[0042] To Ni(CH 3 COO)2 Add 1.0mL glycerol to the mixed aqueous solution, so that the volume ratio of deionized water to glycerol is 23:1, after stirring at room temperature for 10min, place the mixed system on a stainless steel React in a reaction kettle for 3.5 hours at 200°C;

[0043] After the obtained suspension was cooled to room temperature, it was centrifuged in a refrigerated centrifuge at a speed of 6000r / min for 10 minutes, then washed with distilled wat...

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Abstract

The invention belongs to the fields of water treatment technology and environmental functional materials, and particularly relates to a method for preparing high-activity camellia-flower-shaped nickeloxide catalyst by a hydrothermal process and a calcination process. Reagents used in the method are nickel acetate [Ni(CH3COO)2] and glycerol (C3H8O3). The catalyst is prepared by preparing a camellia-flower-shaped beta-Ni(OH)2 precursor through the hydrothermal process and calcinating the precursor at different temperatures and under gas protection. The activation efficiency of S2O8<2-> is improved by utilizing the efficient stable camellia-flower-shaped nickel-based catalyst prepared by the method, thus further improving the reaction speed of advanced oxidation technology in alkaline organic wastewater treatment and reducing energy consumption.

Description

technical field [0001] The invention belongs to the field of water treatment technology and environmental functional materials, in particular to a method for preparing a camellia-shaped nickel-based catalyst for treating alkaline dyeing and finishing wastewater. 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 dyeing and finishing wastewater has the characteristics of strong alkalinity (pH=8.0-11.0), high concentration of biodegradable organic pollutants,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/02C02F1/72C02F101/30
CPCB01J23/755B01J35/02C02F1/725C02F2101/308
Inventor 刘琳东王莹刘倩
Owner SOUTHWEST UNIVERSITY
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