Adsorption of nitrogen on aluminum, Al2O3, and AlN powders at 78 K |
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| Authors: | A. V. Ryabina V. I. Kononenko A. S. Seleznev L. A. Petrov |
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| Affiliation: | 1. Institute of Solid State Chemistry, Russian Academy of Sciences, Ural Branch, Yekaterinburg, 620219, Russia
2. Postovskii Institute of Organic Synthesis, Russian Academy of Sciences, Ural Branch, Yekaterinburg, 620041, Russia
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| Abstract: | The adsorption of nitrogen on aluminum powders of ASD-4 and UDA grades, aluminum oxide (α-Al2O3), and aluminum nitride is studied at 78 K in the adsorbate relative pressure range (P a /P 0) of 0 to 1. It is shown that the nature of the chemical bonds and the structure and state of the adsorbent determine the share of the adsorption isotherms and their attribution to a particular type of isotherms. With an increase in the fraction of metal bonds in an adsorbent, the isotherms become more convex, indicating enhancement of the effect of lateral interactions. The specific surfaces of samples are calculated. |
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