Email this article Physicochemical Properties of Mesoporous Silicas Modified with Hydrazide and Amide Functional Groups
- Authors: Batueva T.D.1, Kondrashina N.B.1, Kuz’micheva N.D.1, Tiunova T.G.1, Shcherban’ M.G.2
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Affiliations:
- Institute of Technical Chemistry
- Perm State National Research University
- Issue: Vol 90, No 11 (2017)
- Pages: 1746-1752
- Section: Inorganic Synthesis and Industrial Inorganic Chemistry
- URL: https://journals.rcsi.science/1070-4272/article/view/215353
- DOI: https://doi.org/10.1134/S1070427217110039
- ID: 215353
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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.
About the authors
T. D. Batueva
Institute of Technical Chemistry
Author for correspondence.
Email: tdbatueva@mail.ru
Russian Federation, Perm
N. B. Kondrashina
Institute of Technical Chemistry
Email: tdbatueva@mail.ru
Russian Federation, Perm
N. D. Kuz’micheva
Institute of Technical Chemistry
Email: tdbatueva@mail.ru
Russian Federation, Perm
T. G. Tiunova
Institute of Technical Chemistry
Email: tdbatueva@mail.ru
Russian Federation, Perm
M. G. Shcherban’
Perm State National Research University
Email: tdbatueva@mail.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
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