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A kind of nickel base water treatment catalyst and its preparation method and application

A catalyst and water treatment technology, applied in physical/chemical process catalysts, chemical instruments and methods, reduced water/sewage treatment, etc., to achieve strong application and promotion value, enhance anti-poisoning performance, and promote adsorption and activation effects

Active Publication Date: 2022-04-29
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is aimed at the current situation and the existing problems in the field of water pollution treatment, and proposes a pH adaptable and p-methyl orange, p-nitrophenol , methylene blue and other dyes have a novel catalyst with high-efficiency degradation effect, another object of the present invention is to provide a preparation method for the above-mentioned catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of catalyst carrier

[0033] Take by weighing 26.155g of aluminum trichloride, and add 784.650g of deionized water to mix evenly, and ultrasonically stir for 1h to obtain an aluminum chloride solution, then weigh 26.155g of polyvinyl alcohol and add it to the aluminum chloride solution, and Stir at 80°C for 6h until the polyvinyl alcohol particles are completely dissolved; then weigh 80.000g of titanium dioxide and add it to the mixed solution, stir at 80°C for 2h; then put the mixed slurry in an oven at 100°C Dry for 4 hours, then place in a muffle furnace for calcination at 500°C for 2 hours to obtain catalyst carrier particles, in which the mass ratio of alumina to titanium oxide is 1:4;

[0034] (2) Co-catalyst precursor solution preparation

[0035] Weigh 2.522g of cerium nitrate hexahydrate, 2.058g of manganese nitrate solution, 1.265g of ferric nitrate nonahydrate and 5.845g of polyvinyl alcohol, add 58.450g of deionized water and stir for 6h at ...

Embodiment 2

[0046] (1) Preparation of catalyst carrier

[0047] Weigh 26.155g of aluminum trichloride, add 784.650g of deionized water to mix evenly, stir ultrasonically for 1 hour to obtain an aluminum trichloride solution, then weigh 26.155g of polyvinyl alcohol and add it to the aluminum trichloride solution, and at a temperature of Stir at 80 °C for 6 hours until the polyvinyl alcohol particles are completely dissolved; then weigh 80.000 g of titanium trioxide into the mixed solution, and stir for 2 hours at a temperature of 80 °C; then place the mixed slurry in an oven at 100 °C Dry for 4 hours, and then place it in a muffle furnace for calcination at 500 °C for 4 hours to obtain catalyst carrier particles, wherein the mass ratio of alumina and titania is 1:4;

[0048] (2) Preparation of cocatalyst precursor solution

[0049] Weigh 8.071g of cerium nitrate hexahydrate, 1.646g of manganese nitrate solution, 1.012g of ferric nitrate nonahydrate and 10.729g of polyvinyl alcohol, add 10...

Embodiment 3

[0060] (1) Preparation of catalyst carrier

[0061] Weigh 26.155g of aluminum trichloride, add 784.650g of deionized water to mix evenly, stir ultrasonically for 1 hour to obtain an aluminum trichloride solution, then weigh 26.155g of polyvinyl alcohol and add it to the aluminum trichloride solution, and at a temperature of Stir at 80 °C for 6 hours until the polyvinyl alcohol particles are completely dissolved; then weigh 80.000 g of titanium trioxide into the mixed solution, and stir for 2 hours at a temperature of 80 °C; then place the mixed slurry in an oven at 100 °C Dry for 4 hours, and then place it in a muffle furnace for calcination at 500 °C for 4 hours to obtain catalyst carrier particles, wherein the mass ratio of alumina and titania is 1:4;

[0062] (2) Preparation of cocatalyst precursor solution

[0063] Weigh 8.071g of cerium nitrate hexahydrate, 1.646g of manganese nitrate solution, 1.012g of ferric nitrate nonahydrate and 10.729g of polyvinyl alcohol, add 10...

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PUM

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Abstract

The invention discloses a nickel-based water treatment catalyst and its preparation method and application. The catalyst uses a mixture of alumina and titanium oxide as a carrier, nickel nanoparticles as a catalytic active component, and cerium-manganese-iron composite oxide as a catalyst. co-catalyst. Stir the co-catalyst precursor solution and the catalyst carrier evenly, stale, extrude, dry and roast, absorb the active component precursor, and then reduce it with sodium borohydride to prepare the catalyst. The catalyst is environmentally friendly, has low cost, and can efficiently catalyze and reduce water pollutants such as p-nitrophenol, methyl orange, and methylene blue.

Description

technical field [0001] The invention relates to a nickel-based water treatment catalyst and its preparation method and application, belonging to the fields of environmental protection catalytic materials and water pollution control. Background technique [0002] p-nitrophenol, methyl orange, methylene blue, etc. are commonly used dyes, 10% to 20% of which are discharged into the water environment during their use, and the waste water containing p-nitrophenol, methyl orange, methylene blue, etc. is toxic High, containing carcinogenic, mutagenic, and teratogenic substances; high chroma, inhibiting plant photosynthesis in aquatic systems: high COD value will lead to eutrophication of water bodies. Based on the above hazards, wastewater containing dyes such as p-nitrophenol, methyl orange, and methylene blue is an urgent problem in water treatment technology. The commonly used treatment methods include adsorption method, membrane separation method, ordinary oxidation method, bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C02F1/70C02F101/30C02F101/34C02F101/38
CPCB01J23/8892B01J23/002C02F1/70B01J2523/00C02F2101/308C02F2101/345C02F2101/38B01J35/23B01J2523/31B01J2523/3712B01J2523/47B01J2523/72B01J2523/842
Inventor 徐海涛金奇杰计雯钰李明波宋静徐梦
Owner NANJING TECH UNIV
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