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Composite-type nano attapulgite ceramsite ozone catalyst and preparation method and application thereof

A nano-attapulgite and attapulgite technology, which is applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve low current efficiency, poor wastewater applicability, Problems such as poor catalytic activity, to achieve the effect of increasing reaction speed, efficient treatment, and low manufacturing cost

Active Publication Date: 2019-01-18
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies existing in the prior art, the present invention solves the problems of poor wastewater applicability, poor catalytic activity, and low current efficiency in the three-dimensional particle electrode, and provides a catalyst with strong catalytic oxidation ability, high current efficiency, low energy consumption, and stability. Preparation method of nanometer ozone catalyst with good advantages

Method used

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  • Composite-type nano attapulgite ceramsite ozone catalyst and preparation method and application thereof
  • Composite-type nano attapulgite ceramsite ozone catalyst and preparation method and application thereof
  • Composite-type nano attapulgite ceramsite ozone catalyst and preparation method and application thereof

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Embodiment 1

[0029] A preparation method of composite nano-attapulgite ozone catalyst, comprising the following steps:

[0030] The first step, grinding and forming: select 50g of attapulgite ceramsite with a Mohs strength of 2.5 and a specific gravity of 2.20 as the raw material of attapulgite ceramsite; for auxiliary materials, kaolin is selected as aggregate additive, fly ash is selected as pore-forming agent, and binder Sodium silicate is selected, and the mass dosage ratio is attapulgite: kaolin: fly ash: sodium silicate = 10: 1.2: 0.5: 0.6; the active catalytic component A is a mixture of iron nitrate and iron nitrate nanoparticles, and the mass input The ratio is ferric nitrate: ferric nitrate nanoparticles: attapulgite = 0.02:1.2:100; mix the above materials and grind them into powder; add 12.5mL deionized water according to the dosage of 25mL / 100g, mix evenly into a slurry The mixture is made into spherical particles with a particle diameter of 4mm;

[0031] The second step, dryi...

Embodiment 2

[0050] A preparation method of composite nano-attapulgite ozone catalyst, comprising the following steps:

[0051]The first step, grinding and forming: select 60g of attapulgite ceramsite with a Mohs strength of 2.7 and a specific gravity of 2.25 as the attapulgite ceramsite raw material; for auxiliary materials, montmorillonite is selected as the aggregate additive, sodium bicarbonate is selected as the pore-forming agent, and viscose The binder is sodium cellulose, and the mass dosage ratio is attapulgite: montmorillonite: sodium bicarbonate: sodium cellulose = 10: 1.0: 1.0: 2.0; the active catalytic component A is titanium tetrachloride and tetrachloride The mixture of titanium nanoparticles, the mass dosage ratio is titanium tetrachloride: titanium tetrachloride nanoparticles: attapulgite = 0.05:1.5:100; the above materials are mixed and ground to powder; the dosage is 25mL / 100g Add 15.0mL deionized water, mix evenly to form a slurry mixture, and then make spherical partic...

Embodiment 3

[0058] A preparation method of composite nano-attapulgite ozone catalyst, comprising the following steps:

[0059] The first step, grinding and forming: select attapulgite ceramsite 40g with a Mohs strength of 3.0 and a specific gravity of 2.20 as the raw material of attapulgite ceramsite; for auxiliary materials, choose illite as the aggregate additive, and ammonium carbonate as the pore-forming agent. Calcium phosphate is selected as the agent, and the mass dosage ratio is attapulgite: illite: ammonium carbonate: calcium phosphate=10:1.2:0.8:1.0; the active catalytic component A is a mixture of nickel nitrate and nickel nitrate nanoparticles, and the mass input The addition ratio is nickel nitrate: nickel nitrate nanoparticles: attapulgite = 0.5:2.0:100; mix the above materials and grind them into powder; add 8.0mL deionized water according to the dosage of 20mL / 100g, and mix evenly to form a slurry The mixture is made into spherical particles with a particle size of 3.5mm; ...

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Abstract

The invention discloses a composite-type nano attapulgite ceramsite ozone catalyst and a preparation method and application thereof. The catalyst is formed by particulate attapulgite ceramsite and a Sb-doped TiO2 solid-solution composite catalyst loaded on the surface of the particulate attapulgite ceramsite. The preparation method thereof comprises the following steps: (1) grinding and forming; (2) drying and sintering; (3) dipping and nanocrystallizing hydrothermally: enabling the sintered attapulgite ceramsite to be placed in mixed sol solution in a certain Ti and Sb mole ratio, and performing vibrating and dipping in a certain temperature condition, after operating, filtering impregnation liquid, and drying; (4) roasting and activating; and (5) repeated treatment: repeatedly performingthe third step and the fourth step, to obtain the composite-type nano attapulgite ceramsite ozone catalyst. The prepared catalyst is applied in a three-dimensional electrode reactor and can be efficiently used for treating chloramphenicol wastewater, and complete in degradation effect.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a composite nano-attapulgite ceramsite ozone catalyst and a preparation method and application thereof. Background technique [0002] Antibiotics are widely used in the prevention and treatment of human and animal infectious diseases and as growth promoters in animals. With the increasing use of antibiotics worldwide, while antibiotics have made great contributions to the development of human and animal health, they have also brought about increasingly serious environmental problems. Since most of these substances are difficult to be completely absorbed by animals, the remainder is excreted in the form of parent compounds, etc., and then enters the environment. These antibiotics remaining in the environment can enter the food chain through drinking water, livestock and poultry products, etc., and trace amounts of antibiotics may cause microbial resistance, which will pose a...

Claims

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Application Information

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IPC IPC(8): B01J23/835B01J23/14C02F1/461C02F1/78C02F101/34C02F101/36C02F101/38
CPCC02F1/4672B01J23/002B01J23/14B01J23/835C02F2101/34C02F2101/36C02F2101/38B01J35/399B01J35/393B01J35/33
Inventor 孙文全孙永军陈雷周俊
Owner NANJING UNIV OF TECH
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