RHEOLOGICAL CHARACTERISTICS OF TEMPLATE SYNTHESIS’S PROCESS OF NANOZEOLITE NAA IN THE THERMO REVERSIBLE GELS OF METHYLCELLULOSE

Background. Recently, the special attention is given to nanoscale zeolite NaA, especially synthesized by hydrothermal synthesis. Nanozeolites appear to be quite effective in the purification of biogas from impurities. Adjusting the size of nanozeolites A possible to conduct the synthesis in a medium thermoreversible gels, particularly methylcellulose. Formation of nano-sized particles, ie, zeolite NaA crystal growth can be controlled by the viscosity of the reaction in medium rheology techniques. Purpose: to identify the rheological characteristics of the formation of nano-sized zeolite NaA conducting the hydrothermal synthesis in the medium thermo-reversible methylcellulose gels. Methodology. The rheological characteristics of nanosized zeolites NaA synthesis were investigated in the medium by rheometer Paar Physica MCR301 and control the formation of nanoparticles was supplied by the Peltier module. The viscosity of the reaction medium is determined at different equilibrium temperature, which was varied from 293 to 363 K in steps of 1 K/min. Originality. The process of hydrothermal synthesis nanozeolite NaA was carried out controlling in the medium methylcellulose gel by rheology method. It is shown that the high efficiency of this approach of obtaining nanotzeolite NaA with defined dimensions in accelerating the reaction process at different temperatures. Findings. Rheological investigation of the process of hydrothermal synthesis in the presence of nanozeolite NaA methylcellulose from 2 to 8% showed that gelation begins at 40°C and intensive growth of nanosized crystal samples observed at > 60°C. It determined that the nanoparticles are characterized by having a narrow size range 90 - 350 nm due to the synthesis reaction in the pores of the methylcellulose.- rheological approach to the synthesis and control particles of nanozeolites NaA applied; - samples of nanozeolites NaA are obtained with dimensions of 80 - 350 nm for biogas purification.