Synthesis of microporous eskolaite from Cr(VI) using activated carbon as a reductant and template.
J Colloid Interface Sci
; 374(1): 321-4, 2012 May 15.
Article
em En
| MEDLINE
| ID: mdl-22365637
A novel technique has been devised for the synthesis of microporous α-Cr(2)O(3) (eskolaite). The technique was based on the formation of amorphous-Cr(2)O(3) onto microporous activated carbon through adsorption-reduction of dichromate ions (Cr(2)O(7)(2-)) at the activated carbon/aqueous solution interface. Then, the Cr(2)O(3)-loaded carbon was thermally processed under oxidizing conditions to remove the carbon and recover the chromium oxide as α-Cr(2)O(3). Both the Cr(2)O(3)-loaded carbon and the synthetic product were characterized by XRD, SEM, surface area and pore volume measurements. The synthetic eskolaite assayed 97.3% Cr(2)O(3) and its specific surface area was 15.48 m(2)/g and pore size of 16.1 Å.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Colloid Interface Sci
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos