MODIFICATION OF PHYSICO-CHEMICAL PROPERTIES COMMERCIAL ZEOLITE Y WITH POST-SYNTHETIC TREATMENT
A comparative study of the process of dealumination of citric acid aqueous solutions of cation-decationated form of zeolite Y with the ratio SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 5.1 before and after thermo-couple stabilization has been carried out. It was found that the acid dealumination of the sample, not subjected to thermocouple treatment, leads to its decathionization, dealumination and amor-phization of the crystal lattice. With acidic dealumination of the sample after thermocouple stabilization, the accompanying centers and the volume of mesopores increase, with no destruction of the crystal lattice.