Vanadium oxide complexes in room-temperature chloroaluminate molten salts

R. C. Bell; A. W. Castleman; D. L. Thorn

doi:10.1021/ic990693o

Vanadium oxide complexes in room-temperature chloroaluminate molten salts

R. C. Bell, A. W. Castleman, D. L. Thorn

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The dissolution of vanadium(V) oxide (V₂O₅) in various ionic liquids has been studied to determine the complexes formed with respect to melt composition and V₂O₅ concentration. Vanadium oxide did not dissolve in either 1-n-butyl-3-methylimidazolium tetrafluoroborate or 1-n-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquids. V₂O₅ was found to dissolve at temperatures greater than 70 °C in 1-ethyl- and 1-n-butyl-3-methylimidazolium tetrachloroaluminate ionic liquids. Analyses of vanadium-containing melts by ⁵¹V, ¹H, and ¹³C NMR and infrared spectroscopy indicate the emergence of different species as a function of melt acidity. In basic and neutral melts, VO₂Cl₂^- and a metavanadate species of the form [(VO₃)_n]^n- are observed. The species VO₂Cl₂^- is the prominent product in basic melts, but as the melt becomes neutral or as the concentration of V₂O₅ is increased, the concentration of the metavanadate species is found to increase. However, V₂O₅ has been found to react in acidic melts to form volatile VOCl₃.

Original language	English (US)
Pages (from-to)	5709-5715
Number of pages	7
Journal	Inorganic chemistry
Volume	38
Issue number	25
DOIs	https://doi.org/10.1021/ic990693o
State	Published - Jan 1 1999

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry

Access to Document

10.1021/ic990693o

Cite this

@article{c54d3d804c304bc3b6f112367252a25b,

title = "Vanadium oxide complexes in room-temperature chloroaluminate molten salts",

abstract = "The dissolution of vanadium(V) oxide (V2O5) in various ionic liquids has been studied to determine the complexes formed with respect to melt composition and V2O5 concentration. Vanadium oxide did not dissolve in either 1-n-butyl-3-methylimidazolium tetrafluoroborate or 1-n-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquids. V2O5 was found to dissolve at temperatures greater than 70 °C in 1-ethyl- and 1-n-butyl-3-methylimidazolium tetrachloroaluminate ionic liquids. Analyses of vanadium-containing melts by 51V, 1H, and 13C NMR and infrared spectroscopy indicate the emergence of different species as a function of melt acidity. In basic and neutral melts, VO2Cl2- and a metavanadate species of the form [(VO3)n]n- are observed. The species VO2Cl2- is the prominent product in basic melts, but as the melt becomes neutral or as the concentration of V2O5 is increased, the concentration of the metavanadate species is found to increase. However, V2O5 has been found to react in acidic melts to form volatile VOCl3.",

author = "Bell, {R. C.} and Castleman, {A. W.} and Thorn, {D. L.}",

year = "1999",

month = jan,

day = "1",

doi = "10.1021/ic990693o",

language = "English (US)",

volume = "38",

pages = "5709--5715",

journal = "Inorganic chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "25",

}

TY - JOUR

T1 - Vanadium oxide complexes in room-temperature chloroaluminate molten salts

AU - Bell, R. C.

AU - Castleman, A. W.

AU - Thorn, D. L.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The dissolution of vanadium(V) oxide (V2O5) in various ionic liquids has been studied to determine the complexes formed with respect to melt composition and V2O5 concentration. Vanadium oxide did not dissolve in either 1-n-butyl-3-methylimidazolium tetrafluoroborate or 1-n-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquids. V2O5 was found to dissolve at temperatures greater than 70 °C in 1-ethyl- and 1-n-butyl-3-methylimidazolium tetrachloroaluminate ionic liquids. Analyses of vanadium-containing melts by 51V, 1H, and 13C NMR and infrared spectroscopy indicate the emergence of different species as a function of melt acidity. In basic and neutral melts, VO2Cl2- and a metavanadate species of the form [(VO3)n]n- are observed. The species VO2Cl2- is the prominent product in basic melts, but as the melt becomes neutral or as the concentration of V2O5 is increased, the concentration of the metavanadate species is found to increase. However, V2O5 has been found to react in acidic melts to form volatile VOCl3.

AB - The dissolution of vanadium(V) oxide (V2O5) in various ionic liquids has been studied to determine the complexes formed with respect to melt composition and V2O5 concentration. Vanadium oxide did not dissolve in either 1-n-butyl-3-methylimidazolium tetrafluoroborate or 1-n-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquids. V2O5 was found to dissolve at temperatures greater than 70 °C in 1-ethyl- and 1-n-butyl-3-methylimidazolium tetrachloroaluminate ionic liquids. Analyses of vanadium-containing melts by 51V, 1H, and 13C NMR and infrared spectroscopy indicate the emergence of different species as a function of melt acidity. In basic and neutral melts, VO2Cl2- and a metavanadate species of the form [(VO3)n]n- are observed. The species VO2Cl2- is the prominent product in basic melts, but as the melt becomes neutral or as the concentration of V2O5 is increased, the concentration of the metavanadate species is found to increase. However, V2O5 has been found to react in acidic melts to form volatile VOCl3.

UR - http://www.scopus.com/inward/record.url?scp=0000849435&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000849435&partnerID=8YFLogxK

U2 - 10.1021/ic990693o

DO - 10.1021/ic990693o

M3 - Article

AN - SCOPUS:0000849435

SN - 0020-1669

VL - 38

SP - 5709

EP - 5715

JO - Inorganic chemistry

JF - Inorganic chemistry

IS - 25

ER -

Vanadium oxide complexes in room-temperature chloroaluminate molten salts

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this