Real life experimental determination of platinum group metals content in automotive catalytic converters

E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions

Yakoumis, I.^1 ; Moschovi, A.M.^1 ; Giannopoulou, I.^2 ; Panias, D.^2

Monolithos Catalysts and Recycling Ltd, Polygono, Athens

11476, Greece^1

Laboratory of Metallurgy, School of Mining and Metallurgical Engineering, National Technical University of Athens, Athens, Greece^2

关键词: Atomic adsorption spectroscopy;    Automobile catalysts;    Automotive catalytic converters;    Experimental determination;    Experimental protocols;    Inductive coupled plasma mass spectrometries;    Platinum group metals;    X ray fluorescence spectroscopy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/329/1/012009/pdf
DOI  :  10.1088/1757-899X/329/1/012009

来源: IOP

【 摘 要 】

The real life experimental protocol for the preparation of spent automobile catalyst samples for elemental analysis is thoroughly described in the following study. Collection, sorting and dismantling, homogenization and sample preparation for X-Ray fluorescence spectroscopy and Atomic Adsorption Spectroscopy combined with Inductive coupled plasma mass spectrometry are discussed in detail for both ceramic and metallic spent catalysts. The concentrations of Platinum Group Metals (PGMs) in spent catalytic converters are presented based on typical consignments of recycled converters (more than 45,000 pieces) from the Greek Market. The conclusions clearly denoted commercial metallic catalytic foil contains higher PGMs loading than ceramic honeycombs. On the other hand, the total PGMs loading in spent ceramic catalytic converters has been found higher than the corresponding value for the metallic ones.