A Comparative Analysis of the Adsorption Properties and Porous Structure of an ASD-4 Powder Impregnated with Copper Formate in Different Concentrations

A. V. Ryabina; Рябина А. В.; V. G. Shevchenko; Шевченко В. Г.; V. N. Krasil’nikov; Красильников В. Н.

doi:10.31857/S0044185622050217

A Comparative Analysis of the Adsorption Properties and Porous Structure of an ASD-4 Powder Impregnated with Copper Formate in Different Concentrations

Autores: Ryabina A.V.¹, Shevchenko V.G.¹, Krasil’nikov V.N.¹
Afiliações:
1. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, 620219, Yekaterinburg, Russia
Edição: Volume 59, Nº 1 (2023)
Páginas: 22-27
Seção: ФИЗИКО-ХИМИЧЕСКИЕ ПРОЦЕССЫ НА МЕЖФАЗНЫХ ГРАНИЦАХ
URL: https://rjmseer.com/0044-1856/article/view/663809
DOI: https://doi.org/10.31857/S0044185622050217
EDN: https://elibrary.ru/BVAJQN
ID: 663809

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Resumo

The adsorption properties of an ASD-4 aluminum powder and the powder modified with copper formate in different concentrations of 1, 2, 3, and 5 wt % were studied using the low-temperature adsorption of nitrogen at 78 K. The structural properties as morphology and phase composition of the interaction products were studied; the specific surface area and porosity were evaluated. It was shown that the adsorption characteristics of the powders modified with 1 and 2 wt % copper formate remained almost unchanged, which is of interest for creating a protective layer on the surface of the aluminum particles without significantly changing its structure-forming properties. The introduction of the modifier at a concentration of 3 and 5 wt % significantly affected the adsorption characteristics of the interaction products. For example, the specific surface of the ASD-4 + 3% Cu powder amounted to 12 m2/g, while that of the ASD-4 + 5% Cu achieved 19 m2/g, whereas the specific surface of the initial ASD-4 powder was only 0.7728 m2/g.

Palavras-chave

specific surface, porosity, hysteresis

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