In-situ FTIR study of ethyl xanthate adsorption on sulfide minerals under conditions of controlled potential

Jaakko Leppinen, C. Basilio, R.-H. Yoon

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

A spectroelectrochemical ATR cell has been constructed for in-situ FTIR measurements of ethyl xanthate adsorption on chalcocite, chalcopyrite, pyrite and galena at pH 9.2. It allows potential control while conditioning the mineral bed electrode and subsequently recording the spectra.
The results obtained with chalcocite identify three different potential regions of xanthate adsorption, including chemisorption, copper ethyl xanthate formation on the surface and multilayer formation. On chalcopyrite, xanthate initially forms dixanthogen, followed by copper ethyl xanthate at higher potentials.
Dixanthogen is the only surface species identified on the surface of pyrite. Lead ethyl xanthate-like species are formed on the surface of galena at potentials where the voltammogram shows a pre-wave for chemisorption.
Original languageEnglish
Pages (from-to)259-274
JournalInternational Journal of Mineral Processing
Volume26
Issue number3-4
DOIs
Publication statusPublished - 1989
MoE publication typeA1 Journal article-refereed

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Sulfide minerals
sulfide
adsorption
Adsorption
Pyrites
mineral
Chemisorption
galena
chalcopyrite
Copper
pyrite
copper
conditioning
Minerals
Multilayers
electrode
Lead
Electrodes
in situ
chemisorption

Cite this

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title = "In-situ FTIR study of ethyl xanthate adsorption on sulfide minerals under conditions of controlled potential",
abstract = "A spectroelectrochemical ATR cell has been constructed for in-situ FTIR measurements of ethyl xanthate adsorption on chalcocite, chalcopyrite, pyrite and galena at pH 9.2. It allows potential control while conditioning the mineral bed electrode and subsequently recording the spectra. The results obtained with chalcocite identify three different potential regions of xanthate adsorption, including chemisorption, copper ethyl xanthate formation on the surface and multilayer formation. On chalcopyrite, xanthate initially forms dixanthogen, followed by copper ethyl xanthate at higher potentials. Dixanthogen is the only surface species identified on the surface of pyrite. Lead ethyl xanthate-like species are formed on the surface of galena at potentials where the voltammogram shows a pre-wave for chemisorption.",
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In-situ FTIR study of ethyl xanthate adsorption on sulfide minerals under conditions of controlled potential. / Leppinen, Jaakko; Basilio, C.; Yoon, R.-H.

In: International Journal of Mineral Processing, Vol. 26, No. 3-4, 1989, p. 259-274.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - In-situ FTIR study of ethyl xanthate adsorption on sulfide minerals under conditions of controlled potential

AU - Leppinen, Jaakko

AU - Basilio, C.

AU - Yoon, R.-H.

PY - 1989

Y1 - 1989

N2 - A spectroelectrochemical ATR cell has been constructed for in-situ FTIR measurements of ethyl xanthate adsorption on chalcocite, chalcopyrite, pyrite and galena at pH 9.2. It allows potential control while conditioning the mineral bed electrode and subsequently recording the spectra. The results obtained with chalcocite identify three different potential regions of xanthate adsorption, including chemisorption, copper ethyl xanthate formation on the surface and multilayer formation. On chalcopyrite, xanthate initially forms dixanthogen, followed by copper ethyl xanthate at higher potentials. Dixanthogen is the only surface species identified on the surface of pyrite. Lead ethyl xanthate-like species are formed on the surface of galena at potentials where the voltammogram shows a pre-wave for chemisorption.

AB - A spectroelectrochemical ATR cell has been constructed for in-situ FTIR measurements of ethyl xanthate adsorption on chalcocite, chalcopyrite, pyrite and galena at pH 9.2. It allows potential control while conditioning the mineral bed electrode and subsequently recording the spectra. The results obtained with chalcocite identify three different potential regions of xanthate adsorption, including chemisorption, copper ethyl xanthate formation on the surface and multilayer formation. On chalcopyrite, xanthate initially forms dixanthogen, followed by copper ethyl xanthate at higher potentials. Dixanthogen is the only surface species identified on the surface of pyrite. Lead ethyl xanthate-like species are formed on the surface of galena at potentials where the voltammogram shows a pre-wave for chemisorption.

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DO - 10.1016/0301-7516(89)90032-X

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