Time-Dependent Ultrasonic Assisted Recovery of Platinum from Spent Removing Catalyst of Pt/Al2O3 by Acid Leaching

International Conference on Condensed Matters and Advanced Materials 2018

Kurniawan, R.^1 ; Nuroni, M.S.^1 ; Fibriyanti, A.A.^1 ; Utomo, J.^1 ; Fuad, A.^1^2 ; Mufti, N.^1^2 ; Latifah, E.^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java

65145, Indonesia^1

Central Laboratory of Mineral and Advanced Materials, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java

65145, Indonesia^2

关键词: Acid leaching;    Extraction time;    High frequency HF;    Morphological analysis;    Morphological modification;    Time dependent;    Ultrasonic methods;    Ultrasonic-assisted extractions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/515/1/012068/pdf
DOI  :  10.1088/1757-899X/515/1/012068

来源: IOP

【 摘 要 】

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.