DEVELOPMENT OF A BINDING-FREE METHOD FOR THE SYNTHESIS OF ALUMINOSILICATES NaA

Makhamov Bakhrom Azimjonovich; Fayzullaev Normurot Ibodullaevich; Rakhmatov Doniyor Khudayorovich; Rahmatov Xudoyor Boboniyozovich, Ismoilova Nozima Farxod qizi, Omonqulov Sarvarjon Toshtemir o‘g‘li

doi:10.5281/zenodo.10363393

DEVELOPMENT OF A BINDING-FREE METHOD FOR THE SYNTHESIS OF ALUMINOSILICATES NaA

12.12.2023 International Scientific Journal "Science and Innovation". Series A. Volume 2 Issue 12

Makhamov Bakhrom Azimjonovich, Fayzullaev Normurot Ibodullaevich, Rakhmatov Doniyor Khudayorovich, Rahmatov Xudoyor Boboniyozovich, Ismoilova Nozima Farxod qizi, Omonqulov Sarvarjon Toshtemir o‘g‘li

Abstract. The work shows that only at least 30% of the initial grains (granules) can be included, and after crystallization of the artificially obtained highly dispersed NaA aluminosilicate, a product with a degree of crystallinity close to 100% can be obtained, and in the absence of additives, a hydrosodalite phase can be obtained. A "sol-gel" method for the synthesis of mesoporous aluminosilicate has been developed. The gel for the two-stage synthesis of mesoporous aluminosilicate was prepared according to the following method: 50.0 ml of tetraethyl orthosilicate, kaolin, sodium hydroxide, ethyl alcohol, hexamethylenediamine and citric acid and 50.0 ml of ethanol solution were added to 50.0 ml of H2O solution. 12.0 ml of 0.1 M NaOH and 50.0 ml of hexamethylenediamine were added in a thin stream and the mixture was left with intensive stirring for 10 minutes. To increase the binding-free crystallinity of the artificially obtained mesoporous aluminosilicate NaA to ~100%, a method of loosening additives to a highly dispersed mesoporous artificially obtained aluminosilicate of the same structural type synthesized from highly active methacaolin has been developed. it is mixed with kaolin from the mine in a ratio of 30-70 /70-30%, respectively. The aim of the work is to develop a method for the synthesis of NaA aluminosilicate without binders.

Keywords: NaA aluminosilicate, kaolin, metakaolin, sodium metasilicate, mesoporous

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