scholarly journals Dissolution behavior of precious metals and selective palladium leaching from spent automotive catalysts by trihalide ionic liquids

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10110-10120
Author(s):  
Arne Van den Bossche ◽  
Nerea Rodriguez Rodriguez ◽  
Sofía Riaño ◽  
Wim Dehaen ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquids ◽  
Precious Metals ◽  
Dissolution Behavior ◽  
Automotive Catalysts ◽  
Automotive Catalyst ◽  
Ceramic Support

Trichloride ionic liquids were used to increase the leaching selectivity of palladium from spent automotive catalyst with a ceramic support.

scholarly journals Model of Infiltration of Spent Automotive Catalysts by Molten Metal in Process of Platinum Metals Recovery

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Agnieszka Fornalczyk ◽  
Slawomir Golak ◽  
Mariola Saternus
Keyword(s):  
Electromagnetic Field ◽  
Molten Metal ◽  
Metal Flow ◽  
Precious Metals ◽  
Automotive Catalysts ◽  
Catalyst Carrier ◽  
Metals Recovery ◽  
Spent Catalysts ◽  
Hydrodynamic Field ◽  
The Impact

This paper presents the model for the washing-out process of precious metals from spent catalysts by the use of molten lead in which the metal flow is caused by the rotating electromagnetic field and the Lorentz force. The model includes the coupling of the electromagnetic field with the hydrodynamic field, the flow of metal through anisotropic and porous structure of the catalyst, and the movement of the phase boundary (air-metal) during infiltration of the catalyst carrier by the molten metal. The developed model enabled analysis of the impact of spacing between the catalysts and the supply current on the degree of catalyst infiltration by the molten metal. The results of calculations carried out on the basis of the model were verified experimentally.

Ionic liquids as media for biomass processing: opportunities and restrictions

Holzforschung ◽  
2011 ◽  
Vol 65 (4) ◽  
Author(s):  
Michael Schrems ◽  
Agnieszka Brandt ◽  
Tom Welton ◽  
Falk Liebner ◽  
Thomas Rosenau ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Gas Chromatography Mass Spectrometry ◽  
Dissolution Behavior ◽  
Dissolution Profile ◽  
Renewable Materials ◽  
Pyrolysis Gas ◽  
Selective Precipitation ◽  
Eucalyptus Kraft Pulp ◽  
Rye Straw

Abstract The present study provides insight into the dissolution behavior of renewable materials in ionic liquids. Beech, spruce and rye straw were dissolved in 1-ethyl-3-methylimidazolium acetate as the ionic liquid of choice, which is currently one of the most frequently used cation-anion combinations among ionic liquids for biomaterial processing. The dissolution was followed by selective precipitation of cellulose, hemicelluloses, and lignin. The obtained lignin was analyzed with Curie-point pyrolysis gas chromatography/mass spectrometry (Cu-Py-GC/MS) and the separated cellulose/hemicellulose fractions with gel permeation chromatography (GPC). Time dependence of the dissolution process was studied on rye straw, eucalyptus kraft pulp and beech sulfite pulp. The results show a changing dissolution profile over time, which is due to progressing degradation of the cellulose in the ionic liquid.

scholarly journals Separation of precious metals by split-anion extraction using water-saturated ionic liquids

2020 ◽  
Vol 22 (23) ◽  
pp. 8375-8388
Author(s):  
Viet Tu Nguyen ◽  
Sofía Riaño ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquids ◽  
Precious Metals ◽  
Water Saturated ◽  
Selective Process

Split-anion extraction with water-saturated ionic liquids is a benign, efficient and selective process for recovery of precious metals from chloride media.

Dissolution Behavior of Chitin in Ionic Liquids

2010 ◽  
Vol 49 (3) ◽  
pp. 528-541 ◽  
Author(s):  
Wen-Tao Wang ◽  
Jiang Zhu ◽  
Xiu-Li Wang ◽  
Yan Huang ◽  
Yu-Zhong Wang
Keyword(s):  
Ionic Liquids ◽  
Dissolution Behavior

Dissolution Behavior of Hydrated Tungsten Chlorides in Chloroaluminate Ionic Liquids and It's Application in Aluminum–Tungsten Alloy Electrodeposition

2021 ◽  
Vol MA2021-02 (58) ◽  
pp. 1718-1718
Author(s):  
Yoshikazu Takeuchi ◽  
Shota Higashino ◽  
Masao Miyake ◽  
Takumi Ikenoue ◽  
Tetsuji Hirato
Keyword(s):  
Ionic Liquids ◽  
Tungsten Alloy ◽  
Dissolution Behavior ◽  
Alloy Electrodeposition

A novel electrobiotechnology for the recovery of precious metals from spent automotive catalysts

2003 ◽  
Vol 24 (3) ◽  
pp. 289-297 ◽  
Author(s):  
P. Yong ◽  
N. A. Rowson ◽  
J. P. G. Farr ◽  
L. R. Harris ◽  
L. E. Macaskie
Keyword(s):  
Precious Metals ◽  
Automotive Catalysts

scholarly journals Toward a Better Understanding of Different Dissolution Behavior of Starches in Aqueous Ionic Liquids at Room Temperature

ACS Omega ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 11312-11319 ◽  
Author(s):  
Jinwei Wang ◽  
Fei Ren ◽  
Jinglin Yu ◽  
Les Copeland ◽  
Shuo Wang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Dissolution Behavior

scholarly journals A Combined Deep Eutectic Solvent–Ionic Liquid Process for the Extraction and Separation of Platinum Group Metals (Pt, Pd, Rh)

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7204
Author(s):  
Olga Lanaridi ◽  
Sonja Platzer ◽  
Winfried Nischkauer ◽  
Andreas Limbeck ◽  
Michael Schnürch ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Mixed Model ◽  
Deep Eutectic Solvent ◽  
Precious Metals ◽  
Platinum Group Metals ◽  
Environmentally Benign ◽  
Extraction Capacity ◽  
Acidic Solutions ◽  
Extraction And Separation ◽  
Platinum Group

Recovery of platinum group metals from spent materials is becoming increasingly relevant due to the high value of these metals and their progressive depletion. In recent years, there is an increased interest in developing alternative and more environmentally benign processes for the recovery of platinum group metals, in line with the increased focus on a sustainable future. To this end, ionic liquids are increasingly investigated as promising candidates that can replace state-of-the-art approaches. Specifically, phosphonium-based ionic liquids have been extensively investigated for the extraction and separation of platinum group metals. In this paper, we present the extraction capacity of several phosphonium-based ionic liquids for platinum group metals from model deep eutectic solvent-based acidic solutions. The most promising candidates, P66614Cl and P66614B2EHP, which exhibited the ability to extract Pt, Pd, and Rh quantitively from a mixed model solution, were additionally evaluated for their capacity to recover these metals from a spent car catalyst previously leached into a choline-based deep eutectic solvent. Specifically, P66614Cl afforded extraction of the three target precious metals from the leachate, while their partial separation from the interfering Al was also achieved since a significant amount (approx. 80%) remained in the leachate.

Sign in / Sign up

Export Citation Format

Share Document