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DAMBRAUSKAS, T. DAVIDOVICIENE, D. BALTAKYS, K. EISINAS, A. JASKUNAS, A. ŠILER, P. RUDELIS, V. ŠVEDAITĖ, E.
Original Title
Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate
Type
journal article in Web of Science
Language
English
Original Abstract
This work aims to determine the influence of adsorbed Cu2+, Co2+, and Cr3+ ions on the porosity of synthetic calcium silicate hydrate by analyzing nitrogen adsorption and desorption isotherms. The calcium silicate hydrate sample was synthesized under saturated steam pressure at a 175 degrees C temperature when the duration of isothermal curing was 16 h. The intercalation of Cu2+, Co2+, or Cr3+ ions was based on the adsorption experiment at 25 degrees C temperature. It was obtained that after adsorption 100 mg of metal ions were intercalated in 1 g of the sample. The analysis of nitrogen adsorption-desorption isotherms showed, that the nature of intercalated metal ions strongly affects the specific surface area and porosity of adsorbent. It was calculated that the specific surfaces area of the adsorbent increases during adsorption of Cu2+ and Co2+ ions and decreases during adsorption of Cr3+ ions. During calcination, adsorbent and adsorbent with intercalated Co2+ ions became non-porous materials, while samples with intercalated Cr3+ and Cu2+ ions showed a different tendency. The classification of hysteresis loops and calculations by using the corrected Kelvin equation and Orr et al. scheme revealed that the shape of pores depends on the nature of adsorbate. The obtained results were confirmed by analysis of nitrogen adsorption-desorption isotherms as well as SEM and TEM analysis.
Keywords
Calcium silicate hydrate; Adsorption-desorption isotherms; BET analysis; Specific surface area; Transitions metal ions
Authors
DAMBRAUSKAS, T.; DAVIDOVICIENE, D.; BALTAKYS, K.; EISINAS, A.; JASKUNAS, A.; ŠILER, P.; RUDELIS, V.; ŠVEDAITĖ, E.
Released
29. 7. 2022
Publisher
ELSEVIER
Location
AMSTERDAM
ISBN
2468-0230
Periodical
SURFACES AND INTERFACES
Year of study
33
Number
OCT 2022
State
Kingdom of the Netherlands
Pages count
11
URL
https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516
BibTex
@article{BUT181452, author="Tadas {Dambrauskas} and Domante {Davidoviciene} and Kestukis {Baltakys} and Anatolijus {Eisinas} and Andrius {Jaskunas} and Pavel {Šiler} and Valdas {Rudelis} and Evelina {Švedaitė}", title="Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate", journal="SURFACES AND INTERFACES", year="2022", volume="33", number="OCT 2022", pages="11", doi="10.1016/j.surfin.2022.102243", issn="2468-0230", url="https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516" }