Vapour Pressure Equations for the Platinum Group Elements: IMPROVED CALCULATIONS OF VAPOUR PRESSURE AND TEMPERATURE

By J. W. Arblaster

doi:10.1595/147106707X213830

ISSN: 0032-1400

oa Vapour Pressure Equations for the Platinum Group Elements

IMPROVED CALCULATIONS OF VAPOUR PRESSURE AND TEMPERATURE
By By J. W. Arblaster¹
View Affiliations Hide Affiliations

Affiliations: ¹ Coleshill Laboratories, Gorsey Lane, Coleshill, West Midlands B46 1JU, U.K.
Source: Platinum Metals Review, Volume 51, Issue 3, Jul 2007, p. 130 - 135
DOI: https://doi.org/10.1595/147106707X213830
- Published online: 01 Jul 2007

Abstract

While a knowledge of the vapour pressure curve of any material is of theoretical significance in understanding its basic physical properties, it can also be of practical importance in, for example, the use of the material in high-temperature vacuum applications. Therefore readily usable equations which accurately predict values of vapour pressure over a wide range of temperatures and pressures can have an important practical use. For the platinum group metals (pgms) the vapour pressures can be immediately assessed from about 10⁻¹⁶ bar to just above the boiling point by the use of Equation (i), fitted for the solid and liquid metals separately: ln(p, bar) = A + Bln(T) + C/T + DT + ET², where p is the vapour pressure, T is the temperature in kelvin and A, B, C, D and E are constants. Although containing five coefficients, this equation can easily be evaluated by computers and scientific calculators. Although it gives values of vapour pressure at fixed temperatures, by a simple and rapid use of iteration values of temperature at fixed vapour pressure, temperature-dependent values of vapour pressure can also be obtained.

Article metrics loading...

/content/journals/10.1595/147106707X213830

2007-07-01

2024-12-22

Full text loading...

/deliver/fulltext/pmr/51/3/PMR-51-3-Jul07-Arblaster.html?itemId=/content/journals/10.1595/147106707X213830&mimeType=html&fmt=ahah

References

J. W. Arblaster, Platinum Metals Rev., 2005, 49, (3), 141 [Google Scholar]
J. W. Arblaster, CALPHAD, 1995, 19, (3), 327 [Google Scholar]
J. W. Arblaster, CALPHAD, 1995, 19, (3), 339 [Google Scholar]
J. W. Arblaster, CALPHAD, 1995, 19, (3), 349 [Google Scholar]
J. W. Arblaster, CALPHAD, 1995, 19, (3), 357 [Google Scholar]
J. W. Arblaster, CALPHAD, 1995, 19, (3), 365 [Google Scholar]
R. E. Honig, D. A. Kramer, RCA Rev., 1969, 30, 285 [Google Scholar]
M. E. Wieser, Pure Appl. Chem., 2006, 78, (11), 2051 [Google Scholar]
A. I. Zaitsev, Yu. A. Priselkov, A. N. Nesmeyanov, Teplofiz. Vys. Temp., 1982, 20, (3), 589; Chem. Abstr., 1982, 97, 98769 [Google Scholar]
F. T. Ferguson, K. G. Gardner, J. A. Nuth III, J. Chem. Eng. Data, 2006, 51, (5), 1509 [Google Scholar]
E. R. Cohen, B. N. Taylor, ‘The 1986 Adjustment of the Fundamental Physical Constants (Report of the CODATA Task Group on Fundamental Constants)’, CODATA Bull., No. 63, November 1986 [Google Scholar]
P. J. Mohr, B. N. Taylor, D. B. Newell, J. Baker, M. Douma, S. Kotochigova, ‘The 2006 CODATA Recommended Values of the Fundamental Physical Constants’, (Web Version 5.0), April 2007 (database developed by http://physics.nist.gov/constants, National Institute of Standards and Technology, Gaithersburg, Maryland, U.S.A.
A. Joueizadeh, S. Johansson, International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas, National Institute of Standards and Technology, Gaithersburg, Maryland, U.S.A., 14th–17th September, 1992, NIST Special Publication 850, April, 1993, p. 131 [Google Scholar]
R. Engleman, U. Litzén, H. Lundberg, J.-F. Wyart, Phys. Scr., 1998, 57, (3), 345 [Google Scholar]
J. W. Arblaster, Platinum Metals Rev., 1996, 40, (2), 62 [Google Scholar]
H. M. Strong, F. P. Bundy, Phys. Rev., 1959, 115, (2), 278 [Google Scholar]
R. E. Bedford, G. Bonnier, H. Maas, F. Pavese, Metrologia, 1996, 33, (2), 133 [Google Scholar]

/content/journals/10.1595/147106707X213830

Vapour Pressure Equations for the Platinum Group Elements

Platinum Metals Review 51, 130 (2007); https://doi.org/10.1595/147106707X213830

/content/journals/10.1595/147106707X213830

Data & Media loading...

Article Type: Research Article

Most Cited Most Cited RSS feed

- Metal-Ligand Exchange Kinetics in Platinum and Ruthenium Complexes
  
  By By Jan Reedijk
- The Preparation of Palladium Nanoparticles
  
  By By James Cookson
- Diesel Engine Emissions and Their Control
  
  By By Tim Johnson
- Recycling the Platinum Group Metals: A European Perspective
  
  By By Christian Hagelüken
- Palladium-Based Alloy Membranes for Separation of High Purity Hydrogen from Hydrogen-Containing Gas Mixtures
  
  Authors: By Gennady S. Burkhanov, Nelli B. Gorina, Natalia B. Kolchugina, Nataliya R. Roshan, Dmitry I. Slovetsky and Evgeny M. Chistov
- A Healthy Future: Platinum in Medical Applications
  
  Authors: By Alison Cowley and and Brian Woodward*
- A Review of the Behaviour of Platinum Group Elements within Natural Magmatic Sulfide Ore Systems
  
  Authors: By D. A. Holwell and I. McDonald
- FINAL ANALYSIS
  
  By
- Asymmetric Transfer Hydrogenation in Water with Platinum Group Metal Catalysts
  
  Authors: By Xiaofeng Wu, Chao Wang and Jianliang Xiao
- Carbon Nanotubes as Supports for Palladium and Bimetallic Catalysts for Use in Hydrogenation Reactions
  
  Authors: R. S. Oosthuizen and V. O. Nyamori
More Less

oa Vapour Pressure Equations for the Platinum Group Elements

IMPROVED CALCULATIONS OF VAPOUR PRESSURE AND TEMPERATURE

Abstract

Most Read This Month

Most Cited Most Cited RSS feed