Właściwości i zastosowanie gruzińskiego naturalnego filipsytu

Vladimer Tsitsishvili; Nanuli Dolaberidze; Nato Mirdzveli; Manana Nijaradze; Zurab Amiridze; Bela Khutsishvili

doi:10.29227/IM-2024-01-55

Vladimer Tsitsishvili Georgian National Academy of Sciences, 52, Rustaveli Ave., 0108, Tbilisi, Georgia https://orcid.org/0000-0003-2592-0973
Nanuli Dolaberidze Petre Melikishvili Institute of Physical and Organic Chemistry, I.Javakhishvili Tbilisi State University, 31 A.Politkovskaia Str., 1086 Tbilisi, Georgia https://orcid.org/0000-0003-2592-0973
Nato Mirdzveli Petre Melikishvili Institute of Physical and Organic Chemistry, I.Javakhishvili Tbilisi State University, 31 A.Politkovskaia Str., 1086 Tbilisi, Georgia https://orcid.org/0000-0002-1755-5024
Manana Nijaradze Petre Melikishvili Institute of Physical and Organic Chemistry, I.Javakhishvili Tbilisi State University, 31 A.Politkovskaia Str., 1086 Tbilisi, Georgia https://orcid.org/0000-0003-0882-500X
Zurab Amiridze Petre Melikishvili Institute of Physical and Organic Chemistry, I.Javakhishvili Tbilisi State University, 31 A.Politkovskaia Str., 1086 Tbilisi, Georgia https://orcid.org/0000-0002-6875-2773
Bela Khutsishvili Petre Melikishvili Institute of Physical and Organic Chemistry, I.Javakhishvili Tbilisi State University, 31 A.Politkovskaia Str., 1086 Tbilisi, Georgia https://orcid.org/0000-0003-3685-9506

DOI: https://doi.org/10.29227/IM-2024-01-55

Słowa kluczowe: Właściwości, Zastosowanie, Naturalny filipsyt, Gruzja

Abstrakt

Oceanic and terrestrial sedimentary phillipsites make up very large reserves, but the use of this natural zeolite is not so wide comparing to clinoptilolite, and purpose of our study was to characterize the phillipsites of the Georgian deposits and highlight their possible application. It is shown that natural phillipsite can be used as a raw material for the synthesis of phase-pure zeolite NaX with Si/Al~1.5-1.7 in the form of octahedral crystallites with uniform micrometric (2-7 μm) dimensions, characterized by high specific surface area (590-770 m2/g) and volume of pores (0.58 cm3/g) including uniform zeolitic micropores and channels with an average diameter of 55 nm, which opens up the prospect of its use in catalysis. It has been established that natural phillipsite is a suitable carrier of bioactive metals: silver-, copper-, and zinc-containing micro-mesoporous materials have been prepared using ion-exchange reactions between zeolite and a salt of a transition metal; the products contain up to 235 mg/g of silver, 85 mg/g of copper, and 87 mg/g of zinc, and in the Kirby-Bauer disk-diffusion test show strong bacteriostatic activity against such microorganisms as gram-negative bacterium Escherichia coli, gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, fungal pathogenic yeast Candida albicans and a fungus Aspergilus niger. The use of bactericidal materials obtained on the basis of natural phillipsite is possible both for water purification and disinfection, and as fillers in the production of polymeric materials, paper and cardboard.