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Erschienen in: Journal of Sol-Gel Science and Technology 2/2019

26.04.2019 | Original Paper:Sol-gel and hybrid materials with surface modification for applications

Amine functionalized mesoporous hybrid materials: influence of KCl and xylene on the textural characteristics and CO2 sorption

verfasst von: Nina Velikova, Ivanka Spassova

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2019

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Abstract

Amine-functionalized mesoporous silica materials were prepared by sol–gel method in the system tetraethylortosilicate: bis[(3- trimethoxysilyl)propyl]amine (TEOS: BTPA). The hybrid amine functionalized silica materials were synthesized by co-condensation reaction between TEOS and BTPA precursors in acidic media. Soft template approach for pore formation was applied and as a structural directing agent was used surfactant Pluronic P123. For improving of pore ordering and textural characteristics xylene and KCl were used and their influence on the structural and morphological characteristics was investigated by FTIR, 13C CP MAS NMR, 29Si MAS NMR, BET, PSD and XRD techniques. CO2 adsorption properties of the synthesized amine functionalized hybrid materials were investigated. The simultaneous presence of xylene and KCl leads to improvement of the pore ordering, increasing of the textural characteristics values and formation of cylindrical pores. The determined heats of CO2 adsorption evidenced chemisorption process between CO2 and the amine groups of the hybrid materials.

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Metadaten
Titel
Amine functionalized mesoporous hybrid materials: influence of KCl and xylene on the textural characteristics and CO2 sorption
verfasst von
Nina Velikova
Ivanka Spassova
Publikationsdatum
26.04.2019
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 2/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-019-04998-1

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