Modified sorbents based on walnut shell for sorption of toxic gases

Z. A. Mansurov, P. Lodewyckx, L. F. Velasco, S. Azat, A. R. Kerimkulova

Onderzoeksoutput: Bijdrage aan een tijdschriftCongresartikelpeer review

Samenvatting

In this article, low-cost carbon-based nanoporous materials were synthesized and impregnated in order to offer a sufficient protection for a wide range of toxic chemicals. The microstructure analysis of the samples reveals that the activation promotes the formation of a higher number of small pores and the development of a spongy texture of the sorbents leading thus to an increase in carbon content. The activated samples have apparent micro-mesoporosity confirmed by the corresponding isotherms of low-temperature adsorption of nitrogen. Furthermore, it has been shown that the activation procedure leads to samples with different acidity and this surface property has a marked influence on the performance of the materials. The results of a breakthrough time study for vapors of inorganic and organic substances indicate that the impregnations with Cu and Co are the most suitable for obtaining a universal sorbent. In this regard, an activated carbon impregnated with cobalt that can outperform commercial reference materials intended for this specific application has been developed in this work.

Originele taal-2Engels
Pagina's (van-tot)2521-2526
Aantal pagina's6
TijdschriftMaterials Today: Proceedings
Volume49
DOI's
StatusGepubliceerd - 2021
Evenement8th International Conference on Nanomaterials and Advanced Energy Storage Systems, INESS 2020 - Uttar Pradesh, India
Duur: 6 aug. 20206 aug. 2020

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