Multiphase behavior of carbon dioxide with solid aromatics

White, Gary L.; Lira, Carl T.

doi:10.1016/0378-3812(92)87041-k

Cited by 14 publications

(1 citation statement)

References 37 publications

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“…%) of modifiers are added. As SF CO2 possesses low polarizability, the addition of modifiers improves this property and the same was stated in the papers [49,50].…”

Section: Supercritical Fluids Oxidationsupporting

confidence: 66%

Recovery of Noble Metals from Spent Catalysts: A Review

Padamata

Yasinskiy

Polyakov

et al. 2020

Metall Mater Trans B

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During several past decades, plenty of technologies for platinum group metals (PGM) and rhenium (Re) recovery from electronic wastes and spent catalysts have been developed and published. The reasons for the rising interest in this area are: □ The abundance of these elements in the earth's crust is less than 10 -3 ppm (~6.6 10 4 t all over the world); □ global demand for PGMs is over 590 t; □ electronics and catalysts industry consumes over 90% of precious metals (about 65% of Pd, 45% of Pt and 84% of Rh are consumed in catalytic converters); □ properties of PGMs and Re (resistance towards corrosion and oxidation, high melting temperatures, electrical conductivity, and catalytic activity) are of great commercial interest.Even though several comprehensive reviews on the recovery of precious metals from spent catalysts have been recently published, several developments were out of the attention of the scientific community. The reviews divide the technologies into hydro-and pyrometallurgical ones. However, the variety of different approaches requires a more detailed classification. This article is an overview of the recently reported works and the comparison of different technologies in terms of extraction efficiency, environmental friendliness, and capital and operational expenditures. The new electrochemical method, which is now under development, is also presented.

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“…%) of modifiers are added. As SF CO2 possesses low polarizability, the addition of modifiers improves this property and the same was stated in the papers [49,50].…”

Section: Supercritical Fluids Oxidationsupporting

confidence: 66%