Ceramic filter with catalytic coating

Vera Serga, Ruta Švinka, Visvaldis Švinka, Andris Cimmers

Description of the Technology

Technology of development of ceramic filter with catalytic coating occurs in two separate steps: 1. obtaining of porous ceramic matrix; 2. Obtaining of the catalytic coating on the matrix. 1.Concentrated suspension of micrometers sized oxides was used for the obtaining of porous ceramic matrix. Through going pore structure of sintered ceramic was provided in the result of elimination of hydrogen during chemical reaction. Sintering process was carried out after solidification and drying green product. 2.Inorganic salts of transition metal and organic acid  were used as raw materials for the obtaining of coated ceramic by extraction-pyrolisis methode.  Nanosized particles of transition metal oxides were formed on the material surface and walls of pores.

Applications

Technology of composite material can be used for the simultaneous filtration of with organic substances polluted water and decomposition of organic substances.

Advantages

Main advantages:

• Simultaneous filtration and decomposition of organic pollutants;
• Possible purification of hot liquiods;
• Possibility partially or fully replase noble metals with transition metal oxide nanoparticles in the catalytic heterogeneous processes.

Keywords

porous ceramic,filtering,heating,nanoparticles,oxides of transition metals