Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations
Abstract
Speciation of Mo(VI) in chloride media (0.5-11 M HCl) at elevated Mo concentrations (0.1-300 mM Mo) was investigated using UV spectroscopy. In addition to five major monomeric species, H2MoO4, H3MoO4+, H3MoO4Cl, MoO2Cl2, and MoO2Cl3-, chemometric analysis of UV spectra suggests the presence of three cationic dinuclear species that predominate in solutions of 1-4.5 M HCl at >20 mM Mo concentrations. Thermodynamic values and molar absorptivity spectra were calculated from UV spectrophotometric data using refined numerical methods. The stability constants determined for three Mo dimers are log beta = 3.53 +/- 0.05 (H2Mo2O52+), log beta = 3.60 +/- 0.04 (H3Mo2O53+), and log beta = 2.91 +/- 0.03 (H3Mo2O6Cl2+).
- Authors:
-
[3]
- School of Nuclear Science & Engineering, Oregon State University, 100 Radiation Center, Corvallis, Oregon 97330, United States, Chemical and Fuel Cycle Technologies Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
- School of Nuclear Science & Engineering, Oregon State University, 100 Radiation Center, Corvallis, Oregon 97330, United States
- Chemical and Fuel Cycle Technologies Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1659336
- Alternate Identifier(s):
- OSTI ID: 1663145; OSTI ID: 1756846
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Published Article
- Journal Name:
- ACS Omega
- Additional Journal Information:
- Journal Name: ACS Omega Journal Volume: 5 Journal Issue: 37; Journal ID: ISSN 2470-1343
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Anions; Reaction mechanisms; Absorption; Oligomers; Stability
Citation Formats
Bettinardi, David J., Paulenova, Alena, and Tkac, Peter. Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations. United States: N. p., 2020.
Web. doi:10.1021/acsomega.0c02858.
Bettinardi, David J., Paulenova, Alena, & Tkac, Peter. Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations. United States. https://doi.org/10.1021/acsomega.0c02858
Bettinardi, David J., Paulenova, Alena, and Tkac, Peter. Wed .
"Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations". United States. https://doi.org/10.1021/acsomega.0c02858.
@article{osti_1659336,
title = {Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations},
author = {Bettinardi, David J. and Paulenova, Alena and Tkac, Peter},
abstractNote = {Speciation of Mo(VI) in chloride media (0.5-11 M HCl) at elevated Mo concentrations (0.1-300 mM Mo) was investigated using UV spectroscopy. In addition to five major monomeric species, H2MoO4, H3MoO4+, H3MoO4Cl, MoO2Cl2, and MoO2Cl3-, chemometric analysis of UV spectra suggests the presence of three cationic dinuclear species that predominate in solutions of 1-4.5 M HCl at >20 mM Mo concentrations. Thermodynamic values and molar absorptivity spectra were calculated from UV spectrophotometric data using refined numerical methods. The stability constants determined for three Mo dimers are log beta = 3.53 +/- 0.05 (H2Mo2O52+), log beta = 3.60 +/- 0.04 (H3Mo2O53+), and log beta = 2.91 +/- 0.03 (H3Mo2O6Cl2+).},
doi = {10.1021/acsomega.0c02858},
journal = {ACS Omega},
number = 37,
volume = 5,
place = {United States},
year = {2020},
month = {9}
}
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