Adsorption properties of aluminium oxide modified with palladium, gold, and cerium oxide nanoparticles

Pleiades Publishing Ltd - Tập 90 - Trang 1427-1433 - 2016
S. N. Lanin1, A. A. Bannykh1, A. E. Vinogradov1, N. V. Kovaleva1, K. S. Lanina1, S. A. Nikolaev1
1Department of Chemistry, Moscow State University, Moscow, Russia

Tóm tắt

The adsorption properties of nanocomposites based on γ-Al2O3 modified with CeO x , Au/CeO x , and Pd/CeO x nanoparticles with contents of deposited metals ranging from 0.07 to 1.71 wt % are investigated by means of dynamic sorption method. n-Alkanes (C6–C8), acetonitrile, diethyl ether, tetrahydrofuran, and dioxane are used as test adsorbates. Adsorption isotherms are measured, and the isosteric heats of adsorption of a number of test adsorbates are calculated. Electron-donor and electron-acceptor characteristics of the surfaces of γ-Al2O3-based nanocomposites are estimated. It is shown that Au(0.1%)/CeO x (0.07%)/γ-Al2O3 nanocomposite, which has the lowest content of nanoparticles of the deposited metals, has the highest adsorption activity.

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Pleiades Publishing Ltd

Tập 90

1427-1433

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