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Catalyst for catalytic oxidation of ozone, and preparation method and application thereof

An ozone catalytic oxidation and catalyst technology, applied in the field of water treatment, can solve the problems of poor stability, complex catalyst process, low treatment efficiency, etc., and achieve the effects of stable catalytic performance, easy large-scale industrial production, and stable catalytic activity.

Inactive Publication Date: 2017-07-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalysts currently developed have disadvantages such as complex process, poor stability, and low processing efficiency, which limit the development of this technology

Method used

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  • Catalyst for catalytic oxidation of ozone, and preparation method and application thereof
  • Catalyst for catalytic oxidation of ozone, and preparation method and application thereof
  • Catalyst for catalytic oxidation of ozone, and preparation method and application thereof

Examples

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preparation example Construction

[0028] The invention discloses a preparation method of an ozone catalytic oxidation catalyst, comprising the following steps:

[0029] a. γ-Al with a diameter of dmm 2 o 3 Wash with deionized water, dry in an oven at 105°C for 1 hour, and then 1 ℃ in a muffle furnace for 5 hours, take it out and cool to room temperature to obtain pretreated γ-Al 2 o 3 ;

[0030] b. Pretreat γ-Al 2 o 3 Immerse in 1mol / L NaOH aqueous solution for 4 hours, take it out by filtration, wash with distilled water until the pH does not change, dry in an oven at 105°C, and then immerse in a mixed solution of ferric nitrate and copper nitrate. The amount ratio of substances is n 1 , the concentration of the mixed solution of ferric nitrate and copper nitrate is C 1 mol / L, pretreatment γ-Al 2 o 3 The ratio to the mixed solution is n 2 , the immersion time is T, and the catalyst precursor is obtained;

[0031] c. After drying the catalyst precursor in an oven at 105°C for 1 hour, at t 2 Roast ...

Embodiment 1-5

[0033] According to the preparation method of the above-mentioned ozone catalytic oxidation catalyst, each step process parameter of embodiment 1-5 is as shown in table 1 below:

[0034] Table 1 process parameter list

[0035]

[0036]

[0037] In Comparative Examples 1-14, the effects of carrier type, mixed solution type and concentration, and calcination temperature were studied. The process parameter values ​​of various variables are shown in Table 2-4 below. The preparation method and other process parameters are the same as in Example 3.

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Abstract

The invention discloses a preparation method for a catalyst used for catalytic oxidation of ozone. The preparation method comprises the following steps: a, cleaning gamma-Al2O3 with a diameter of 3 to 5 mm by using deionized water and then carrying out drying and high-temperature roasting so as to obtain pretreated gamma-Al2O3; b, soaking the pretreated gamma-Al2O3 in a NaOH solution for 3 to 6 h, carrying out filtering, then taking the soaked gamma-Al2O3 out, washing the soaked gamma-Al2O3 with distilled water until the pH value of the soaked gamma-Al2O3 does not change, then carrying out drying in a drying oven with a temperature of 100 to 120 DEG C, and then soaking the dried gamma-Al2O3 in a mixed solution of ferric nitrate and copper nitrate so as to obtain a catalyst precursor, wherein the concentration of the mixed solution of ferric nitrate and copper nitrate is 0.75 to 1.25 mol / L; and c, drying the catalyst precursor and carrying out high-temperature roasting so as to obtain the catalyst used for catalytic oxidation of ozone. The preparation method is simple in process, low in cost and easy for realization of large-scale industrial production. The catalyst for catalytic oxidation of ozone prepared by using the preparation method is applicable to treatment of antibiotic production wastewater.

Description

technical field [0001] The invention belongs to the field of water treatment, and specifically relates to a preparation method of an ozone catalytic oxidation catalyst, and simultaneously the invention also relates to a catalyst obtained by using the preparation method and the application of the catalyst in treating antibiotic industrial wastewater. Background technique [0002] At present, the discharge of industrial wastewater is increasing day by day, and its composition is complex, which has caused great harm to the environment and human beings. Antibiotic wastewater is one of the recognized sources of pollution. The concentration of organic matter such as ammonia nitrogen and sulfate in antibiotic production wastewater is high, and it contains biological substances such as antibiotics. Inhibitory substances, complex wastewater components, poor biodegradability, high salinity, high toxicity, high COD (chemical oxygen demand), deep color, large fluctuations in pH value of ...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J37/02B01J37/08C02F1/78C02F103/34
CPCB01J23/745B01J23/002B01J37/0205B01J37/0207B01J37/088B01J2523/00C02F1/725C02F1/78C02F2103/343B01J2523/17B01J2523/31B01J2523/842
Inventor 杨文玲郜子兴吴赳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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