AN IN-SITU INVESTIGATION OF THE SOLUBILITY OF MOLYBDENUM TRIOXIDE IN OXYGENATED WATER AT SUPERCRITICAL CONDITIONS
The 5th International Symposium on SuperCritical Water-cooled Reactors - 2011 March 13-16


Presented at:
The 5th International Symposium on SuperCritical Water-cooled Reactors
2011 March 13-16
Location:
Vancouver,Canada
Session Title:
Chemistry I (Corrosion Product Transport)

Authors:
Peter R. Meredith (St. Francis Xavier University)
Alan J. Anderson (St. Francis Xavier University)
Robert A. Mayanovic (Missouri State University)
  

Abstract

The solubility of MoO3 in a 1M H2O2 aqueous solution was investigated under supercritical conditions in a hydrothermal diamond anvil cell (HDAC).  Quantitative analyses of the aqueous solution in equilibrium with a crystal of MoO3 were obtained at 400, 450 and 500 ºC and pressures of 44, 75, and 113 MPa respectively using micro synchrotron x-ray fluorescence (μSXRF).  The μSXRF spectra were collected at the Pacific Northwest Consortium (PNC) x-ray microprobe facility at the Advanced Photon Source, Argonne National Laboratory.  It was found that the solubility of MoO3 in water above the critical point is higher than previously reported.

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