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Porosity of some iron(III), chromium(III), and zirconium(IV) hydroxide oxide xerogels

Authors
  • Pechenyuk, S. I.1
  • Ivanov, Yu. V.1
  • Semushina, Yu. P.1
  • 1 Russian Academy of Sciences, Tananaev Institute of Chemistry and Technology of Rare-Earth Technology and Mineral Resources, Kola Scientific Center, ul. Fersmana 14, Apatity, Russia , Apatity (Russia)
Type
Published Article
Journal
Russian Journal of Inorganic Chemistry
Publisher
Nauka/Interperiodica
Publication Date
Feb 01, 2006
Volume
51
Issue
2
Pages
189–193
Identifiers
DOI: 10.1134/S0036023606020057
Source
Springer Nature
Keywords
License
Yellow

Abstract

Porosity and density in water are studied for xerogels prepared by drying iron(III), chromium(III), and zirconium(IV) hydroxide oxide (HO) hydrogels. The hydrogels are either freshly precipitated at pH 7–11 or aged in sodium chloride or sodium sulfate solutions. The space distribution in the xerogels between the volume occupied by the constituent ions and the interstitial volume (spaces between metal-oxygen chains, mesopores, micropores, and macropores) is determined. The meso-and micropore volumes of the chromium(III) HO xerogels are two to four times the volumes of iron(III) and zirconium(IV) HO xerogels. We suggest that the microstructure of the chromium(III) HO hydrogels is almost fully inherited by their xerogels.

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