Recent advances in platinum and palladium solvent extraction from real leaching solutions of spent catalysts

AP Paiva - Catalysts, 2023 - mdpi.com
The strategic importance of platinum and palladium, two platinum-group metals (PGMs), is
particularly supported by their technological applications, one of the most relevant being the …

Thiacalixarenes: emergent supramolecules in crystal engineering and molecular recognition

M Yamada, M Rajiv Gandhi, UMR Kunda… - Journal of Inclusion …, 2016 - Springer
A consolidated review on the emergent supramolecules of thiacalixarenes in crystal
engineering and molecular recognition contributed from our group is presented. Our simple …

Selective extraction of Au (III) and Pd (II) using p-tert-butyl-thiacalix [4] arene tetrathioamide as extractant

S Ning, R Xie, L Zeng, K Tang - Process Safety and Environmental …, 2023 - Elsevier
The recovery of precious metals in e-waste has become an urgent problem to be solved due
to its serious waste of resources and environmental pollution. Herein, a p-tert-butyl-thiacalix …

Rapid and selective recovery of palladium from platinum group metals and base metals using a thioamide-modified calix [4] arene extractant in environmentally …

M Yamada, M Rajiv Gandhi, A Shibayama - Scientific Reports, 2018 - nature.com
A novel macrocyclic calix [4] arene extractant having a long alkyl chain thioamide, 25, 26,
27, 28-tetrakis (Nn-octylthiocarbamoyl) methoxy-5, 11, 17, 23-tetra-tert-butylcalix [4] arene …

Synthesis of pincer-type extractants for selective extraction of palladium from PGMs: An improved liquid-liquid extraction approach to current refining processes

M Rajiv Gandhi, M Yamada, K Haga, A Shibayama - Scientific reports, 2017 - nature.com
SCS pincer ligands 1–4 were synthesised, and their ability to extract Pd (II) from HCl and
HNO3 media was studied. The Pd (II) extraction properties of 1–4 were compared with those …

Adsorption of palladium (II) from hydrochloric acid solutions using polymeric resins impregnated with novel N-substituted 2-(diphenylthiophosphoryl) acetamides

AN Turanov, VК Karandashev, OI Artyushin… - Separation and …, 2017 - Elsevier
Abstract Novel N-substituted 2-(diphenylthiophosphoryl) acetamides ligands containing
pyridine and quinoline fragments, were synthesized and studied as extractants for Pd (II) …

p-Sulfonatothiacalix [6] arene-impregnated resins for the sorption of platinum group metals and effective separation of palladium from automotive catalyst residue

MR Gandhi, M Yamada, Y Kondo, A Shibayama… - Journal of Industrial and …, 2015 - Elsevier
Abstract p-Sulfonatothiacalix [6] arene was impregnated onto commercial polymeric resins.
The platinum group metals sorption experiments were carried and maximum PGM sorption …

Reactive extraction of europium (III) and neodymium (III) by carboxylic acid modified calixarene derivatives: Equilibrium, thermodynamics and kinetics

X Lu, D Zhang, S He, J Feng, AT Reda, C Liu… - Separation and …, 2017 - Elsevier
In this paper, extraction behaviors of different carboxylic acid modified calixarenes towards
Eu (III) and Nd (III) were performed. These extractants were extensively evaluated for the …

New heterocyclic dithioether ligands for highly selective separation and recovery of Pd (II) from acidic leach liquors of spent automobile catalyst

K Senthil, U Akiba, K Fujiwara, F Hamada… - Industrial & …, 2017 - ACS Publications
The solvent extraction behavior of Pd (II) from a hydrochloric acid solution with heterocyclic
dithioether ligands, namely, 1, 2-bis ((5-methyl-1, 3, 4-thiadiazol-2-yl) thio) ethane (BMDTE) …

Upper-rim-modified thioether thiacalix [4] arene used for liquid–liquid extraction of Au (Ⅲ) and Pd (Ⅱ) in hydrochloric acid medium

S Wan, R Xie, J Fan, K Tang - Chinese Journal of Chemical Engineering, 2024 - Elsevier
ABSTRACT Gold (Au) and palladium (Pd) play an increasing role in the production and
human life; Therefore, it is of great significance to study their recovery. A 5, 11, 17, 23-tetra …