Abstract
Ushbu tadqiqotda NaAlO₂ va Na₂SiO₃ asosida gidrotermal usulda yuqori kristallik darajaga ega Na-A tipidagi seolit sintez qilindi. Hosil bo‘lgan Na-A seolit LiCl eritmasi yordamida bosqichma-bosqich ion almashinuvi orqali Li-A seolitga aylantirildi. Uch bosqichli almashinish jarayonida Na⁺ ionlari Li⁺ ionlariga samarali almashib, seolit karkasining kristallik barqarorligi saqlanib qoldi. Olingan mahsulotlar XRD va IR spektroskopik tahlillari yordamida chuqur o‘rganildi. XRD natijalari Li-A seolitning yuqori kristallik darajaga ega ekanligini va asosiy faza sifatida litiy alumosilikat shakllanganini ko‘rsatdi. IR tahlili esa Si–O–Al va Si–O–Si tebranishlaridagi siljishlarni qayd etib, Li⁺ ionlarining karkas bo‘shliqlariga joylashishini tasdiqladi. Yakuniy Li-A seolit yuqori ion almashinuvi qobiliyati, barqaror morfologiya va selektiv adsorbsion xususiyatlari bilan ajralib turib, gaz ajratish, kataliz va elektrokimyoviy jarayonlarda istiqbolli material sifatida baholandi.
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