Process for preparing TiO2 (titanium dioxide) film on aluminum-oxide foamed ceramic

A foamed ceramic, alumina technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of photocatalytic efficiency catalyst immobilization and other problems, achieve good acid and alkali corrosion resistance, good resistance High temperature and oxidation resistance, the effect of increasing the effective area
CN102744049AInactive Publication Date: 2012-10-24CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2012-10-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a process for preparing a TiO2 (titanium dioxide) film on aluminum-oxide foamed ceramic. The process adopts a concrete implementation scheme that coating aluminum oxide slurry is coated on a foam rib by dipping and extruding, then foam is burned up, and finally, the aluminum-oxide foamed ceramic with high porosity is obtained in a high-temperature sintering manner; Ti collosol is uniformly coated on a pore wall of an aluminum-oxide foamed ceramic carrier by negative-pressure infiltration; and the TiO2 film which is uniformly and continuously distributed on the pore wall of the aluminum-oxide foamed ceramic is prepared by drying and thermal treatment. According to materials disclosed by the invention, the porous aluminum-oxide foamed ceramic serves as a base body; meanwhile, the base body has good resistance to acid and alkali corrosion due to the stable chemical properties of the Al2O3 (aluminum oxide) ceramic; in addition, the carrier material has good high-temperature resistance and oxidation resistance by virtue of a high-melting point of the Al2O3 ceramic. These properties of the materials well meet the requirements on properties of catalysts and the carrier which are used for purifying industrial wastewater, domestic sewage and toxic waste gas in extremely serious corrosive environments.
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Description

technical field

[0001] The invention belongs to the technical field of ceramic coating, and relates to a method for preparing TiO on ceramics. 2 Thin film technology, especially a uniformly distributed, photocatalytic and nano-scale TiO on the alumina foam ceramic substrate 2 Film preparation process. Background technique

[0002] With the continuous advancement of my country's industrialization and urbanization, the impact on the environment is getting deeper and deeper. The problem of environmental pollution has also become more and more prominent, and has gradually become a stumbling block restricting the rapid development of my country's economy. At the same time, the improvement of people's living standards also requires a good living environment. For this reason, the purification treatment of industrial wastewater, domestic sewage, and toxic waste gas has become an urgent problem to be solved. Most of the substances such as industrial wastewater and domestic sewage...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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