To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels

The paper proposes a model that describes the acid-base properties of amino groups grafted onto the surface, taking into account their interaction with silanol groups. For this, aminopropyl silica was chosen as an object with well-studied methods of preparation, structure and properties. The isother...

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Autores principales:	O. V. Filisteev, A. V. Sharov
Formato:	article
Lenguaje:	EN RU
Publicado:	Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina 2020
Materias:	functionalized sorbents aminopropyl silica protolytic properties curves of potentiometric titration of sorbents Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/8f6571228513476795e19a93f5d5e33a
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spelling	oai:doaj.org-article:8f6571228513476795e19a93f5d5e33a2021-12-01T05:53:11ZTo the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels2411-141410.15826/chimtech.2020.7.4.15https://doaj.org/article/8f6571228513476795e19a93f5d5e33a2020-12-01T00:00:00Zhttps://journals.urfu.ru/index.php/chimtech/article/view/4739https://doaj.org/toc/2411-1414The paper proposes a model that describes the acid-base properties of amino groups grafted onto the surface, taking into account their interaction with silanol groups. For this, aminopropyl silica was chosen as an object with well-studied methods of preparation, structure and properties. The isotherms of sorption of hydrogen ions on aminopropyl silica were obtained by potentiometric method. The experimental points were analyzed numerically, taking into account the presence of an electric double layer, the presence of surface processes competing with the sorption of hydrogen ions, and the peculiarities of the behavior of silanol groups when the degree of surface filling with hydrogen ions changes. The resulting model makes it possible to carry out a preliminary calculation of the sorption of hydrogen ions on the surface of aminopropyl silica.O. V. FilisteevA. V. SharovUralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina articlefunctionalized sorbentsaminopropyl silicaprotolytic propertiescurves of potentiometric titration of sorbentsChemistryQD1-999ENRUChimica Techno Acta, Vol 7, Iss 4, Pp 222-228 (2020)
institution	DOAJ
collection	DOAJ
language	EN RU
topic	functionalized sorbents aminopropyl silica protolytic properties curves of potentiometric titration of sorbents Chemistry QD1-999
spellingShingle	functionalized sorbents aminopropyl silica protolytic properties curves of potentiometric titration of sorbents Chemistry QD1-999 O. V. Filisteev A. V. Sharov To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
description	The paper proposes a model that describes the acid-base properties of amino groups grafted onto the surface, taking into account their interaction with silanol groups. For this, aminopropyl silica was chosen as an object with well-studied methods of preparation, structure and properties. The isotherms of sorption of hydrogen ions on aminopropyl silica were obtained by potentiometric method. The experimental points were analyzed numerically, taking into account the presence of an electric double layer, the presence of surface processes competing with the sorption of hydrogen ions, and the peculiarities of the behavior of silanol groups when the degree of surface filling with hydrogen ions changes. The resulting model makes it possible to carry out a preliminary calculation of the sorption of hydrogen ions on the surface of aminopropyl silica.
format	article
author	O. V. Filisteev A. V. Sharov
author_facet	O. V. Filisteev A. V. Sharov
author_sort	O. V. Filisteev
title	To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
title_short	To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
title_full	To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
title_fullStr	To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
title_full_unstemmed	To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
title_sort	to the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
publisher	Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina
publishDate	2020
url	https://doaj.org/article/8f6571228513476795e19a93f5d5e33a
work_keys_str_mv	AT ovfilisteev tothequestionoftheinfluenceofasilanolcoverontheprotolyticpropertiesofaminopropylsilicagels AT avsharov tothequestionoftheinfluenceofasilanolcoverontheprotolyticpropertiesofaminopropylsilicagels
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To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels

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