Porous ceramic materials, including those with the addition of ?-Al2O3 of the order of 10 %, were obtained on the basis of yttrium oxide, which is inert to sintering and has cubic syngony. The characteristics of the porous structure and filtration properties of synthesized ceramics are revealed. The materials have also been tested under aggressive media (aqueous solutions of H2SO4 acid (20 wt. %) and KOH alkali (10 wt. %) and thermal cycling loads. The results of the studies have shown that the obtained materials are not subject to deformation and destruction in aggressive media. Thermal cycling tests have not revealed any degradation of the physical and mechanical characteristics of the samples. Experimental studies of the separation of solid and liquid components of suspensions on porous ceramic membranes have established the efficiency of rejection of model SiC particles with a size of D50 = 500 nm to be more than 99.9 %. The achieved performance characteristics in combination with the developed pore space of the synthesized materials allow their effective use for micro- and ultrafiltration of liquids, and catalysis processes under aggressive environments and high thermal loads.
Roman D. Kapustin – PhD(Tech.), senior researcher, Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia
Andrey O. Kirillov – PhD(Tech.), junior researcher, Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia
Alexey S. Fedotov – PhD(Chem.), leading researcher, A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
Danil Yu. Grachev – PhD(Chem.), junior researcher, A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
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