Fired products of Cr-smectite clays in nitrogen

Fired products of Cr-smectite clays in nitrogen

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.

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Main Authors: Volzone,C., Cesio,A. M.
Format: Digital revista
Language:English
Published: Brazilian Society of Chemical Engineering 2004
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322004000400008
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spelling oai:scielo:S0104-663220040004000082004-10-01Fired products of Cr-smectite clays in nitrogenVolzone,C.Cesio,A. M. Cr-smectite clays in nitrogen fired products X-ray diffraction and chemical analysis 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.info:eu-repo/semantics/openAccessBrazilian Society of Chemical EngineeringBrazilian Journal of Chemical Engineering v.21 n.4 20042004-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322004000400008en10.1590/S0104-66322004000400008
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Volzone,C.
Cesio,A. M.
spellingShingle Volzone,C.
Cesio,A. M.
Fired products of Cr-smectite clays in nitrogen
author_facet Volzone,C.
Cesio,A. M.
author_sort Volzone,C.
title Fired products of Cr-smectite clays in nitrogen
title_short Fired products of Cr-smectite clays in nitrogen
title_full Fired products of Cr-smectite clays in nitrogen
title_fullStr Fired products of Cr-smectite clays in nitrogen
title_full_unstemmed Fired products of Cr-smectite clays in nitrogen
title_sort fired products of cr-smectite clays in nitrogen
description 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.
publisher Brazilian Society of Chemical Engineering
publishDate 2004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322004000400008
work_keys_str_mv AT volzonec firedproductsofcrsmectiteclaysinnitrogen
AT cesioam firedproductsofcrsmectiteclaysinnitrogen
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