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Phosphinic acids, particularly dialkylphosphinic acids like
Cyanex 272, are premier, highly selective extractants for separating Cobalt () from Nickel (
) in hydrometallurgy. They offer superior selectivity, allowing for cleaner separation at lower pH levels (optimal ~5.6) compared to phosphoric or phosphonic acids.
Key Phosphinic Acid Extractants for Co/Ni:
- Cyanex 272 (Bis(2,4,4-trimethylpentyl)phosphinic acid): The industry standard, known for superior Co/Ni selectivity and efficiency.
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Dialkyl phosphinic acids: Synthesis and applications as ...
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
by Z ZHANG2010Cited by 15 — Dialkyl phosphinic acids: Synthesis and applications as extractant for nickel and cobalt separation ... Comparison of phosphoric, phosphonic and phosphonic acid ...Read more
High-Performance Extractant For Nickel-Cobalt Separation Bis(2,4,4 ...
blitchem.com
https://www.blitchem.com › News
blitchem.com
https://www.blitchem.com › News
C 272 (Bis(2,4,4-trimethylpentyl)phosphinic acid) is an acidic organic phosphorus extractant with the molecular formula C16H35O2P. It features high ...
trimethylpentyl)phosphinic acid (USTB-1) for cobalt and ...
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
by J Wang2020Cited by 22 — It possesses more efficient Co/Ni separation performance than Cyanex 272. It is highly suited to recovering cobalt and nickel from spent ternary cathode ...Read more
Cobalt separation from nickel in sulfate aqueous solution ...
Harvard University
https://ui.adsabs.harvard.edu › abs › abstract
Harvard University
https://ui.adsabs.harvard.edu › abs › abstract
by P Xing2012Cited by 30 — The ability of the recently-synthesised phosphinic acid di-decylphosphinic acid (DDPA) to separate Co(II) from Ni(II) in Ni-Co sulfate aqueous solution ...
phosphinic Acid for Nickel cobalt extractant
Anhui Fitech Material Co.,Ltd
https://www.fitechem.com › tag › phosphinic-acid-for-...
Anhui Fitech Material Co.,Ltd
https://www.fitechem.com › tag › phosphinic-acid-for-...
Our phosphinic Acid for Nickel cobalt extractant are highly valued across diverse international markets, capable of fulfilling a wide array of custom ...
Solvent Extraction and Ion Exchange: Vol 17, No 2
Taylor & Francis Online
https://www.tandfonline.com › ... › Volume 17, Issue 2
Taylor & Francis Online
https://www.tandfonline.com › ... › Volume 17, Issue 2
by R Singh1999Cited by 73 — Solvent extraction of cobalt and nickel by organophosphorus acids I. Comparison of phosphoric, phosphonic and phosphonic acid systems. Source ...Read more
Cobalt-nickel separation:the extraction of cobaalt(II) and ...
ResearchGate
https://www.researchgate.net › ... › Chemistry › Nickel
ResearchGate
https://www.researchgate.net › ... › Chemistry › Nickel
Aug 9, 2025 — ... Di-(2-ethylhexyl)phosphinic acid (P227, PIA-8 or PIA-226) was reported to have larger extraction capacity compared to Cyanex 272 ...Read more
Dialkyl phosphinic acids: Synthesis and applications as ...
中国有色金属学报
http://www.ysxbcn.com › down › paperDown
中国有色金属学报
http://www.ysxbcn.com › down › paperDown
PDF
Cobalt tends to take four-coordination with dialkyl phosphinic acid, whereas nickel tends to take six-coordination with dialkyl phosphinic acid. As a result,.Read more
Solvent Extraction of Ni and Co from the Phosphoric Acid ...
MDPI
https://www.mdpi.com › ...
MDPI
https://www.mdpi.com › ...
by M Rao2020Cited by 45 — An alternative process of pre-roasting, phosphoric acid leaching followed by solvent extraction of a limonitic laterite ore was described in this work.Read more
Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid ...
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC5752428
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC5752428
by J Wang2017Cited by 11 — Dialkyl phosphinic acids: Synthesis and applications as extractant for nickel and cobalt separation. Trans Nonferrous Met Soc China. 2010;20 ...Read more