TITLE

A thermodynamic approach to calculate the yttria-stabilized zirconia pH sensor potential

AUTHOR(S)
Zhang, W.; Charles, E. A.
PUB. DATE
November 2003
SOURCE
Journal of Applied Electrochemistry;Nov2003, Vol. 33 Issue 11, p1025
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Published thermodynamic approaches to calculate the yttria-stabilized zirconia (YSZ) ceramic pH sensor potential are reviewed. A thermodynamic approach related to the Gibbs free energies of reactants and products is proposed to calculate the YSZ pH sensor potential, identify the YSZ pH sensors as primary pH sensors and to determine solution pH at high temperatures. YSZ thimbles have been used with a silver powder internal element prepared in the presence of dry air to generate a redox system, Ag|O2, sensitive to pH. YSZ (Ag|O2) pH sensors have been tested over a temperature range of 100 to 300 °C in lithiated boric acid solutions which are related to pressurized water reactor coolant chemistry. The test results have good agreement with the thermodynamic calculation from 100 to 300 °C. The thermodynamic calculation can be applied to a variety of YSZ pH sensor internal elements including Cu|Cu2O, Hg|HgO, Ag|Ag2O, Ag|O2, whereas earlier published calculations are not generally applicable.
ACCESSION #
16781837

 

Related Articles

  • A novel equation for predicting stability constants of aqueous metal complexes and actinide binding to protein. Xu, Huifang; Wang, Yifeng // AIP Conference Proceedings;2000, Vol. 532 Issue 1, p402 

    Metal complexation with various inorganic or organic ligands in aqueous solutions directly controls the solubility, sorption, and toxicity of toxic metals including radionuclides in natural environments. The quantitative calculations of metal complexation thus have been routinely used in...

  • A Note on the Concept of ’Effective‘ Bulk Exchange Coefficients for Determination of Surface Flux Densities. Ronda, R. J.; De Bruin, H. A. R. // Boundary-Layer Meteorology;Oct1999, Vol. 93 Issue 1, p155 

    Since most land surfaces are non-uniform on meteorological model scales, usually applied flux-profile relationships to obtain surface flux densities cannot be used. Therefore, some modellers assume that these relations are scale-invariant if the local bulk transfer parameters are replaced by...

  • Localized and delocalized perfluorosemibullvalenes. Hai-Shun Wu; Jianfeng Jia; Haijun Jiao // Journal of Molecular Modeling;Jan2007, Vol. 13 Issue 1, p133 

    AbstractOn the basis of the experimental Gibbs free-energy barrier of the degenerate Cope arrangement in semibullvalene, B3P86 shows the best agreement, while B3LYP and MP2 underestimate and CCSD(T) overestimates the barrier. The substituent effect proposal by Hoffmann has been verified. In...

  • Band structure and thermodynamic potentials. Kuznetsov, A.; Karpenko, B.; Dyakin, V. // Russian Physics Journal;Apr2012, Vol. 54 Issue 11, p1208 

    The behavior of different thermodynamic functions of a system of delocalized electrons in a crystal is considered in the single-band strong coupling approximation depending on the degree of energy band filling and temperature. The chemical potential, grand thermodynamic potential, internal...

  • The Role of the Entropy Factor in Chemical Fibre Technology. Serkov, A. T. // Fibre Chemistry;Nov/Dec2002, Vol. 34 Issue 6, p389 

    Examples of manufacturing processes involving use of the entropy factor are examined. A thermodynamic concept of entropy as the energy or orbital motion of molecules is formulated.

  • Application of a free volume model in correlating thermodynamic properties of β-lactam, tetracycline, fluoroquinolone and chloramphenicol antibiotic groups in associating fluids. Pazuki, G. R.; Taghikhani, V.; Vossoughi, M.; Alemzadeh, I. // Chemical Engineering Research & Design: Transactions of the Inst;Mar2009, Vol. 87 Issue 3, p335 

    In this work, an expression for the free volume Gibbs energy model based on the local composition concept (LCC) has been proposed in correlating the solubility, the partitioning and the surface tension of β-lactam, tetracycline, fluoroquinolone and chloramphenicol antibiotic groups in water,...

  • Trap elimination and reduction of size dispersion due to aging in CdS x Se1− x quantum dots. Abhishek Verma; Swati Nagpal; Praveen Pandey; P. Bhatnagar; P. Mathur // Journal of Nanoparticle Research;Dec2007, Vol. 9 Issue 6, p1125 

    Abstract  Quantum Dots of CdS x Se1−x embedded in borosilicate glass matrix have been grown using Double-Step annealing method. Optical characterization of the quantum dots has been done through the combinative analysis of optical absorption and photoluminescence...

  • Interactive comment on "Climatological mean distribution of specific entropy in the oceans".  // Ocean Science Discussions;2007 Supplement, Vol. 4, p1 

    The authors reflect on the arguments directed towards their study concerning the distribution of specific entropy in the oceans using the Gibbs thermodynamic potential function of seawater. They contend that the criticism suggesting that the study is false because oceanographers assume that a...

  • The Minimum Free Energy For Isothermal Dielectrics With Memory. Berti, Valeria; Gentili, Giorgio // Journal of Non-Equilibrium Thermodynamics;1999, Vol. 24 Issue 2, p154 

    The minimum free energy for a rigid dielectric with linear memory is found under isothermal conditions. The resulting expression is given in the frequency domain, i.e., in terms of the Fourier transform of the variables. By means of such a thermodynamic potential and of the Clausius-Duhem...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics