A new version of this entry is available:
Loading...
Article
2021
Synthesis of short-range ordered aluminosilicates at ambient conditions
Synthesis of short-range ordered aluminosilicates at ambient conditions
Abstract (English)
We report here on structure-related aggregation effects of short-range ordered aluminosilicates (SROAS) that have to be considered in the development of synthesis protocols and may be relevant for the properties of SROAS in the environment. We synthesized SROAS of variable composition by neutralizing aqueous aluminium chloride with sodium orthosilicate at ambient temperature and pressure. We determined elemental composition, visualized morphology by microscopic techniques, and resolved mineral structure by solid-state 29Si and 27Al nuclear magnetic resonance and Fourier-transform infrared spectroscopy. Nitrogen sorption revealed substantial surface loss of Al-rich SROAS that resembled proto-imogolite formed in soils and sediments due to aggregation upon freezing. The effect was less pronounced in Si-rich SROAS, indicating a structure-dependent effect on spatial arrangement of mass at the submicron scale. Cryomilling efficiently fractured aggregates but did not change the magnitude of specific surface area. Since accessibility of surface functional groups is a prerequisite for sequestration of substances, elucidating physical and chemical processes of aggregation as a function of composition and crystallinity may improve our understanding of the reactivity of SROAS in the environment.
File is subject to an embargo until
This is a correction to:
A correction to this entry is available:
This is a new version of:
Other version
Notes
Publication license
Publication series
Published in
Scientific reports, 11 (2021), 4207.
https://doi.org/10.1038/s41598-021-83643-w.
ISSN: 2045-2322
London : Nature Publishing Group UK
Other version
Faculty
Institute
Examination date
Supervisor
Cite this publication
Lenhardt, K. R., Breitzke, H., Buntkowsky, G., Reimhult, E., Willinger, M., & Rennert, T. (2021). Synthesis of short-range ordered aluminosilicates at ambient conditions. Scientific reports, 11. https://doi.org/10.1038/s41598-021-83643-w
Edition / version
Citation
DOI
ISSN
ISBN
Language
English
Publisher
Publisher place
Classification (DDC)
540 Chemistry
Collections
Original object
University bibliography
Free keywords
Standardized keywords (GND)
Sustainable Development Goals
BibTeX
@article{Lenhardt2021,
url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16457},
doi = {10.1038/s41598-021-83643-w},
author = {Lenhardt, Katharina R. and Breitzke, Hergen and Buntkowsky, Gerd et al.},
title = {Synthesis of short-range ordered aluminosilicates at ambient conditions},
year = {2021},
volume = {11},
}