Skip to content
1887
Volume 32, Issue 1
  • ISSN: 0032-1400

Abstract

During the manufacture of nitric acid, rhodium-platinum gauzes are used to catalyse the oxidation of ammonia, an operation that results in a major reconstruction of the alloy surface. In this study, the effect of pretreatments, similar to those employed to prepare the catalysts for commercial use, have been examined to determine both the chemical and the physical effects on the surface. A successful pretreatment is shown to produce a generally clean, chemically receptive surface containing reactive crystal orientation sites. Additionally, the nature of the surface during catalyst operation has been investigated using a rapid quench facility in a miniature reactor. It has been established that, during catalyst operation, the surface of the catalyst is metallic, and not covered by an oxide layer as previously thought.

Loading

Article metrics loading...

/content/journals/10.1595/003214088X3211118
1988-01-01
2024-02-22
Loading full text...

Full text loading...

/deliver/fulltext/pmr/32/1/pmr0032-0011.html?itemId=/content/journals/10.1595/003214088X3211118&mimeType=html&fmt=ahah

References

  1. Pielaszek J. Platinum Metals Rev., 1984, 28,(3), 109 [Google Scholar]
  2. Heywood A. E. Platinum Metals Rev., 1982, 26,(1), 28 [Google Scholar]
  3. Pszonicka M. Pol. J. Chem., 1981, 54, 429 [Google Scholar]
  4. Busby J. A., Knapton A. G., and Budd A. E. R. Proc. Fert. Soc., 1978, 169 [Google Scholar]
  5. McCabe R. W., Pignet T., and Schmidt L. D. J. Catal., 1974, 32, 114 [Google Scholar]
  6. McCabe A. R., Smith G. D. W., and Pratt A. S. Platinum Metals Rev., 1986, 30,(2), 54 [Google Scholar]
  7. Gough K. G., and Wibberley B. L. Platinum Metals Rev., 1986, 30,(4), 168 [Google Scholar]
  8. McCabe A. R., and Smith G. D. W. Platinum Metals Rev., 1983, 27,(1), 19; [Google Scholar]
  9. Smith G. D. W. Metals Handbook”, Vol. 10, 9th Ed., Am. Soc. Metals, 1986, pp. 584602 [Google Scholar]
  10. McCabe A. R., and Smith G. D. W. Berlin, Verlag-Chemie, 1984, Vol. 4, p. 73
  11. McCabe A. R., and Smith G. D.W. 1987, p. 607
http://instance.metastore.ingenta.com/content/journals/10.1595/003214088X3211118
Loading
/content/journals/10.1595/003214088X3211118
Loading

Data & Media loading...

  • Article Type: Research Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error