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Type: Artigo de periódico
Title: Characterization Of The Colloidal Products Of Pentacarbonyliron Oxidation
Author: Jafelicci Jr. M.
Conforto E.
Galembeck F.
Abstract: Pentacarbonyliron was oxidized with H2O2, in organic solvents, to give colloidal sols. The aqueous-ethanolic sol is highly stable and undergoes thermally-reversible coagulation. Its solid phase was found to be a non-crystalline Fe (III) hydroxoacetate which is transformed to α-Fe2O3 when heated to 300°C. Iron-bound acetate groups are assumed to have a major role in the sol stability, by preserving the amorphous solid phase. Dry hydroxoacetate particles were heated under vacuum; scanning electron microscopy revealed that these particles coalesce and grow, as in a sintering process but at low temperatures (100-250°). © 1987.
Rights: fechado
Identifier DOI: 10.1016/0166-6622(87)80250-0
Date Issue: 1987
Appears in Collections:Unicamp - Artigos e Outros Documentos

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