Ozone catalyst preparation method

A catalyst and ozone technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of affecting catalytic performance and service life, low ozone utilization rate, catalytic Solve problems such as component dissolution, achieve good catalytic performance, ensure effective utilization, and achieve the effect of large specific surface area and pore volume

Active Publication Date: 2015-07-08
SUZHOU QINGRAN ENVIRONMENTAL PROTECTION TECH
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  • Description
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AI Technical Summary

Problems solved by technology

However, the traditional ozone oxidation technology has certain shortcomings: the utilization rate of ozone is low, and the oxidation is not complete
[0007] The preparation method of the above-mentioned catalyst is relatively simple, and the catalyst activity is high, but because the metal salt solution is used, there is a problem of waste of

Method used

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Example Embodiment

[0022] In order to achieve the above-mentioned object of the invention, the present invention provides a method for preparing an ozone catalyst, which includes the following steps: mixing amorphous alumina powder, catalyst powder, and pore former to form a catalytic mixture; Put into the ball machine, spray the adhesive to form alumina cue ball; put the alumina cue ball and the catalytic mixture into the ball machine, spray the adhesive to form the catalyst shaped sphere; shape the prepared catalyst into the sphere The ozone catalyst is obtained by drying and calcining. The two steps of preparing the catalytic mixture and forming the alumina cue ball are in no particular order, and can also be carried out simultaneously.

[0023] The weight ratios of the amorphous alumina powder, the catalyst powder and the pore former in the catalytic mixture are respectively: 89.5%-97.5%, 2%-8% and 0.5%-2.5%. The content of amorphous alumina powder in the catalytic mixture is relatively high, ...

Example Embodiment

[0031] Example 1

[0032] Take amorphous alumina powder to prepare alumina cue ball.

[0033] In addition, amorphous aluminum oxide powder, iron oxide powder, cerium oxide powder, polyethylene glycol are mixed uniformly in a mass ratio of 94%: 3%: 1.5%: 1.5% to form a catalytic mixture, which is used to form a catalytic mixture Based on the preparation of catalyst shaped spheres. Among them, the particle size of the ferric oxide powder and the cerium oxide powder is 0.1mm~0.5mm.

[0034] Put the amorphous alumina powder into the ball forming machine, spray into the binder formed by boric acid and water at a mass ratio of 1:2, and roll into balls. The amount of binder added is the quality of the amorphous alumina powder 8%, prepared into alumina cue balls with a particle size of 2.5mm~3mm.

[0035] Put the catalytic mixture and the prepared alumina mother ball into the ball forming machine according to the mass ratio of 2.5:1, and spray the binder formed by boric acid and water with ...

Example Embodiment

[0042] Example 2

[0043] Take amorphous alumina powder to prepare alumina cue ball.

[0044] In addition, amorphous aluminum oxide powder, copper oxide powder, titanium dioxide powder, and polyvinyl alcohol are mixed uniformly in a mass ratio of 93%: 2.5%: 2.5%: 2% as a catalytic mixture for preparation on the basis of alumina cue balls Catalyst shaped spheres. Among them, the particle size of copper oxide powder and titanium dioxide powder is 0.2mm~0.5mm.

[0045] Put the shaped alumina powder into the ball forming machine, spray the binder formed by boric acid and water with a mass ratio of 1:3, and roll into balls. The amount of binder added is 8% of the mass of the shaped alumina powder , Prepared into alumina cue balls with a particle size of 2mm~2.5mm.

[0046] Put the catalytic mixture and the prepared alumina mother ball into the ball forming machine according to the mass ratio of 3.375:1, and spray the adhesive formed by boric acid and water with a mass ratio of 1:3. The a...

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Abstract

The invention provides an ozone catalyst preparation method which includes following steps: (1) mixing amorphous aluminum oxide powder, a catalyst powder and a pore-forming agent to form a catalytic mixture; (2) starting a pelletizer, feeding the amorphous aluminum oxide powder thereinto and spraying-in a binding agent to form aluminum oxide mother pellets; (3) feeding the aluminum oxide mother pellets and the catalytic mixture into the pelletizer and spraying-in a binding agent to form a catalyst formed pellet body; and (4) drying and roasting the catalyst formed pellet body to obtain the ozone catalyst. According to the method, the catalyst mixture is formed by mixing the amorphous aluminum oxide powder, the catalyst powder and the pore-forming agent. When the catalyst mixture is sintered onto the outer layer of the aluminum oxide mother pellets, a higher adhesive strength of the catalyst mixture is achieved since the components of the catalyst mixture and the aluminum oxide mother pellets are similar, thereby preventing loss of active components. Meanwhile, the ozone catalyst is ensured that the active components therein are effectively utilized, thereby reducing the production cost of the catalyst.

Description

technical field [0001] The invention relates to a method for preparing an ozone catalyst, in particular to a method for preparing an ozone catalyst with the characteristics of simple process, strong operation controllability, and no pollution. Background technique [0002] Ozone has strong oxidation properties, and the green and environmentally friendly ozone oxidation technology has been applied in many fields such as water treatment, such as sterilization and disinfection of urban water supply, and treatment of refractory organic matter in slightly polluted water. At present, this technology has also been more and more widely used in the treatment of organic wastewater, especially refractory organic wastewater. However, the traditional ozone oxidation technology has certain shortcomings: the utilization rate of ozone is low, and the oxidation is not complete. The reason is mainly due to the strong selectivity of the reaction between ozone molecules and organic matter, and...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/72B01J23/889B01J23/34C02F1/78
Inventor 金沉
Owner SUZHOU QINGRAN ENVIRONMENTAL PROTECTION TECH
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