Fired products of Cr-smectite clays in nitrogen



Document title: Fired products of Cr-smectite clays in nitrogen
Journal: Brazilian journal of chemical engineering
Database: PERIÓDICA
System number: 000308916
ISSN: 0104-6632
Authors: 1
Institutions: 1Universidad Nacional de La Plata, Centro de Tecnología de Recursos Minerales y Cerámica, La Plata, Buenos Aires. Argentina
Year:
Season: Dic
Volumen: 21
Number: 4
Pages: 593-599
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The products of Cr-smectite clays heated to 1350 ° C in nitrogen were evaluated by X-ray diffraction and chemical analysis. Cr-smectite clays were prepared at room temperature by contact between smectite clays and Cr species contained in OH-Cr solutions. The Cr species were prepared using chromium nitrate solution by addition of NaOH solution with OH/Cr = 2. Products of firing in nitrogen at the high temperature were different (magnesia chromite, donathite, iron chromium oxide and picrochromite) depending on the type of isomorphous substitution of the smectite structure and the amount of retained chromium
Disciplines: Ingeniería
Keyword: Ingeniería de materiales,
Arcillas de esmectita,
Cromo,
Productos cocidos,
Difracción de rayos X,
Análisis químico
Keyword: Engineering,
Materials engineering,
Smectite clays,
Chromium,
Fired products,
X-ray diffraction,
Chemical analysis
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