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Action of gaseous atmospheres and temperature on the properties of aluminosilicate refractories saturated with nickel catalyst

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Conclusions

Kaolin and kyanite-sillimanite refractories during heating in hydrogen up to 1500°C sinter intensely, as a result of which there is a sharp reduction in the porosity, and an alteration in other properties.

All the tested aluminosilicate refractories containing 42–62% alumina when heated up to 1500°C in hydrogen rapidly lose their weight as a result of the reduction of the SiO2, changing the structure of the surface layer, which is an active part of the catalyst carrier. These refractories cannot be recommended as carriers operating at high temperatures.

The high-alumina refractories containing 79 and 90% Al2O3 have a much lower loss in weight, and during heating slightly change their porosity and other properties; they can be used as carriers for nickel catalysts.

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Authors
  1. N. V. Pitak
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  2. T. A. Ansimova
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  3. L. I. Karyakin
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Additional information

Translated from Ogneupory, No. 8, pp. 30–36, August, 1971.

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Pitak, N.V., Ansimova, T.A. & Karyakin, L.I. Action of gaseous atmospheres and temperature on the properties of aluminosilicate refractories saturated with nickel catalyst. Refractories 12, 507–512 (1971). https://doi.org/10.1007/BF01283077

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  • DOI: https://doi.org/10.1007/BF01283077

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