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The current work demonstrates that the standard adsorption analysis has a limited applicability for characterization of chemically modified porous silicas. Since low-pressure nitrogen adsorption isotherms are sensitive to the surface changes caused by chemical modification of silicas, these isotherms were successfully used to evaluate their surface heterogeneity during different stages of modification...
A new method for the determination of the adsorption energy distribution of water molecules on disperse silica and alumina surfaces is presented. This method takes into account interactions between the surface and hydrated uranyl (UO 2+2 ) groups, which are luminescent probes. Changes in the spectroscopic characteristics of uranyl ions, measured under selective laser excitation, have...
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