R. Kurniawan, M.S. Nuroni, A.A. Fibriyanti, J. Utomo, A. Fuad, N. Mufti, E. Latifah
A standard recovery of platinum (Pt) in a spent removing catalyst of Pt/Al2O3 was performed by acid leaching of aqua regia. The time-dependent extraction of Pt from Pt/Al2O3 showed that the percentage of the Pt in Pt/Al2O3 decreased by increasing the extraction time, which indicated an increase of the Pt in the leachate. Furthermore, a time-dependent ultrasonic-assisted extraction of Pt from Pt/Al2O3 was also performed. A small number of Pt content in the Pt/Al2O3 obtaining ultrasonic method revealed that the ultrasonic effectively enhanced the Pt extraction compared with standard extraction due to the agitation of high-frequency pressure (sound) waves. The further morphological analysis was also performed to study the morphological modification of Pt/Al2O3. Our results provide a good understanding of the recovery of Pt from spent removing catalyst of Pt/Al2O3 and give an alternative method to increase the Pt extraction. © Published under licence by IOP Publishing Ltd.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java, 65145, Indonesia; Central Laboratory of Mineral and Advanced Materials, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java, 65145, Indonesia
