scholarly journals Recovery of platinum-group metals (PGMS) from spent automotive catalysts: Part II: Automotive catalysts: Structures and principle of operation

2015 ◽  
Vol 8 (1) ◽  
pp. 1-11
Author(s):  
Mile Dimitrijevic ◽  
Snezana Milic ◽  
Sladjana Alagic ◽  
Ana Radojevic
Keyword(s):  
Platinum Group Metals ◽  
Automotive Catalysts ◽  
Platinum Group

scholarly journals Effective Recycling of Spent Auto Catalytic Converters by Using Electrochlorination Method

2018 ◽  
Vol 207 ◽  
pp. 03024 ◽  
Author(s):  
Nikolay Samotaev ◽  
Andrey Antonov ◽  
Grigory Tsarev ◽  
Andreas Tietz
Keyword(s):  
Platinum Group Metals ◽  
Catalytic Converters ◽  
Industrial Practice ◽  
Automotive Catalysts ◽  
Modern Methods ◽  
Recycling Technology ◽  
Platinum Group

Modern methods of recycling spent automotive catalysts and their main disadvantages in industrial practice are considered. The electrochlorination method is proposed as the basis of the platinum-group metals (PGM) recycling technology. As the test of proposed technology a few tons of spent automotive catalysts were processed. The results of the work on the extraction of platinum, palladium, rhodium are analyzed. The extraction rates during experiments were reached for Pt - 97%, Pd - 97% and Rh - 80%.

Leaching of platinum group metals from spent automotive catalysts using organic acids

2020 ◽  
Vol 159 ◽  
pp. 106634
Author(s):  
Jessica de Oliveira Demarco ◽  
Jéssica Stefanello Cadore ◽  
Hugo Marcelo Veit ◽  
Heloísa Bremm Madalosso ◽  
Eduardo Hiromitsu Tanabe ◽  
...  
Keyword(s):  
Organic Acids ◽  
Platinum Group Metals ◽  
Automotive Catalysts ◽  
Platinum Group

scholarly journals Solvometallurgical Recovery of Platinum Group Metals from Spent Automotive Catalysts

2020 ◽  
Author(s):  
Viet Tu Nguyen ◽  
Sofía Riaño ◽  
Emir Aktan ◽  
Clio Deferm ◽  
Jan Fransaer ◽  
...  
Keyword(s):  
Platinum Group Metals ◽  
Automotive Catalysts ◽  
Platinum Group

scholarly journals Recovery of Platinum Group Metals from Spent Automotive Catalysts Using Lithium Salts and Hydrochloric Acid

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6843
Author(s):  
Shunsuke Kuzuhara ◽  
Mina Ota ◽  
Ryo Kasuya
Keyword(s):  
Precious Metals ◽  
Lithium Ion ◽  
Platinum Group Metals ◽  
Leaching Rate ◽  
Electrolytic Solution ◽  
Matrix Component ◽  
Aqua Regia ◽  
Automotive Catalysts ◽  
Chlorine Gas ◽  
Platinum Group

The recovery of platinum group metals (PGMs) from waste materials involves dissolving the waste in an aqueous solution. However, since PGMs are precious metals, their dissolution requires strong oxidizing agents such as chlorine gas and aqua regia. In this study, we aimed to recover PGMs via the calcination of spent automotive catalysts (autocatalysts) with Li salts based on the concept of “spent autocatalyst + waste lithium-ion batteries” and leaching with only HCl. The results suggest that, when Li2CO3 was used, the Pt content was fully leached, while 94.9% and 97.5% of Rh and Pd, respectively, were leached using HCl addition. Even when LiF, which is a decomposition product of the electrolytic solution (LiPF6), was used as the Li salt model, the PGM leaching rate did not significantly change. In addition, we studied the immobilization of fluorine on cordierite (2MgO·2Al2O3·5SiO2), which is a matrix component of autocatalysts. Through the calcination of LiF in the presence of cordierite, we found that cordierite thermally decomposed, and fluorine was immobilized as MgF2.

Sign in / Sign up

Export Citation Format

Share Document