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metadata.dc.type: | Artigo de Periódico |
Title: | The effect of the starting material on the thermal decomposition of iron oxyhydroxides |
Other Titles: | Journal of Thermal Analysis and Calorimetry |
Authors: | Marchetti, Sérgio G. Varela, Maria do Carmo Rangel Santos Oliveira, Alcineia Conceição |
metadata.dc.creator: | Marchetti, Sérgio G. Varela, Maria do Carmo Rangel Santos Oliveira, Alcineia Conceição |
Abstract: | The effect of the iron precursor on the thermal decomposition of iron oxyhydroxides was studied by DSC, DTA and TG in this work. Samples were prepared from iron nitrate, iron sulfate and iron chloride and the thermal curves obtained were analyzed by specific area measurements, X-ray diffraction and Mössbauer spectroscopy. It was found that the iron oxyhydroxide precursors affect the temperatures of the hematite formation as well as the textural properties of the final hematite producing particles with different diameters as following: iron sulfate (3.3 nm)<<iron nitrate (15 nm)<iron chloride (24 nm). |
Keywords: | Fe(III)hydrite hematite iron chloride iron nitrate iron oxide iron sulfate |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/4871 |
Issue Date: | 2003 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
Files in This Item:
File | Description | Size | Format | |
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03 fulltext.pdf | 374,74 kB | Adobe PDF | View/Open |
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