Ключевые слова
Аннотация
Ishlatilgan G-58I katalizatoridan palladiyni HCl–NaClO tizimida ajratib olishda γ-Al₂O₃ tashuvchisining erib ketishini cheklash va uning qayta foydalanish imkoniyatini saqlash masalasi o‘rganildi. Jarayon harorati, davomiyligi, kislota va oksidlovchi konsentratsiyasi hamda suyuqlik: qattiq faza nisbatining palladiy ajralishi va alyuminiy oksidi tashuvchisining barqarorligiga ta’siri tahlil qilindi. 90 °C, 120 min, HCl 11,7%, NaClO 11,0% va S:Q=3:1 sharoitida palladiyning 96,14% ajralishi ta’minlandi. Optimal rejim palladiyning xlorokompleks shaklga o‘tishini tezlashtirishi, biroq γ-Al₂O₃ skeletining ortiqcha kislota ta’sirida yemirilishini cheklashi bilan asoslandi.
Библиографические ссылки
Barakat M.A., Mahmoud M.H.H. Recovery and separation of palladium from spent catalyst. Applied Catalysis A: General. 2006. Vol. 301. P. 182–186.
Barakat M.A. Hydrometallurgical recovery of nano-palladium from spent catalyst. The Open Mineral Processing Journal. 2009. Vol. 2. P. 31–36.
Ding Y., Zhang S., Liu B. et al. An efficient leaching of palladium from spent catalysts through oxidation with Fe(III). Materials. 2019. Vol. 12. Art. 1205.
Xu B., Yang Y., Li Q. et al. A review of recovery of palladium from spent catalysts. Metals. 2022. Vol. 12. Art. 533.
Ilyas S., Srivastava R.R., Kim H. Hydrometallurgical recycling of palladium and platinum from spent catalysts. Separation and Purification Technology. 2021. Vol. 254. Art. 117578.
Li Y., Lousada C.M., Korzhavyi P.A. The nature of hydrogen in γ-alumina. Journal of Applied Physics. 2014. Vol. 115. Art. 203514.
Tursunova F.J. Selective chloride leaching of palladium from γ-Al₂O₃-based catalysts: thermodynamic justification. 2026.
Tursunova F.J. et al. Ishlatilgan palladiyli katalizatorlarni qayta ishlash texnologiyalari. Kompozitsion materiallar. 2025. №1. B. 182–185.
Tursunova F.J. et al. Atsetilenni gidrogenlash katalizatorlaridan palladiyni ajratish. O‘zbekiston kimyo jurnali. 2025. №3. B. 31–38.