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Physicochemical Properties of Mesoporous Silicas Modified with Hydrazide and Amide Functional Groups

  • Inorganic Synthesis and Industrial Inorganic Chemistry
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Abstract

Physicochemical properties of mesoporous silicas modified with hydrazide and amide functional groups were studied. It was found that the main properties of the sorbents under study, characterized by pKa1, are weakly pronounced. The replacement of the counter ion with a hydroxide occurs in a less alkaline medium, compared with monomer analogs. The sorbent modified with N', N'-dimethylhydrazide groups by the impregnation method has pKa2 = 11.78, which is indicative of a sufficient strength of bonding between the counter ion and the silica matrix. The temperature limits, heat effects, and decomposition stages of the sorbents were determined.

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Batueva, T.D., Kondrashina, N.B., Kuz’micheva, N.D. et al. Physicochemical Properties of Mesoporous Silicas Modified with Hydrazide and Amide Functional Groups. Russ J Appl Chem 90, 1746–1752 (2017). https://doi.org/10.1134/S1070427217110039

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  • DOI: https://doi.org/10.1134/S1070427217110039

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