Uniform particles with a large surface area formed by hydrolysis of Fe-2(SO4)(3) with urea

Authors
Subrt, J Bohacek, J Stengl, V Grygar, T Bezdicka, P
Citation
J. Subrt et al., Uniform particles with a large surface area formed by hydrolysis of Fe-2(SO4)(3) with urea, MATER RES B, 34(6), 1999, pp. 905-914
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
34
Issue
6
Year of publication
1999
Pages
905 - 914
Database
ISI
SICI code
0025-5408(199904)34:6<905:UPWALS>2.0.ZU;2-A
Abstract
Synthesis of poorly crystalline iron(III) hydrous oxides and basic salts (f errihydrite, schwertmannite, and jarosite) consisting of uniform spherical particles of characteristic shape with a diameter of similar to 10 mu m is described. The preparation procedure is based on homogeneous precipitation of aqueous solutions of Fe-2(SO4)(3) with urea in the temperature range 60- 100 degrees C. Thermal dehydration of iron(III) hydroxide leads to an amorp hous ferric oxide with a high surface area (similar to 200 m(2)/g) that is stable up to about 500 degrees C. (C) 1999 Elsevier Science Ltd.