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Digitale Medien

Sulfur in chromia (1993)

Lobnig, R. E. ; Grabke, H. J. ; Schmidt, H. P. ; [weitere]

Springer

Oxidation of metals 39 (1993), S. 353-370

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Details

ISSN: 1573-4889

Schlagwort(e): Sulfur ; chromia ; tracer ; sulfur solubility ; adsorption ; pores

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The solubility of sulfur in chromia has been studied in H2-H2O-H2S tagged with35S at 973 and 1173 K at low oxygen and sulfur partial pressures typical for coal gasification-systems. For monocrystalline samples, it has been shown that sulfur-containing species are only present adsorbed on the surface of the specimens and can be removed by ultrasonic cleaning in acetone. The surface coverage after 4 weeks of exposure to H2-H2O-H2S was between 2.8 and 19.3% of a monolayer. In polycrystalline chromia, sulfur was located only in pores and cracks of the sample. In dense, compact areas of the specimens the solubility of sulfur was below the detection limit of autoradiography, which was estimated to be better than 0.17 ppm.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00664661

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