Synthesis of microporous eskolaite from Cr(VI) using activated carbon as a reductant and template

被引：14

作者：

Cruz-Espinoza, A. ^{[2
]}

Ibarra-Galvan, V. ^{[2
]}

Lopez-Valdivieso, A. ^{[1
]}

Gonzalez-Gonzalez, J. ^{[2
]}

机构：

[1] Univ Autonoma San Luis Potosi, Inst Met, San Luis Potosi 78210, Mexico

[2] Univ Colima, Fac Ciencias Quim, Coquimatlan 28400, Colima, Mexico

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 374卷

关键词：

Chromium oxide; Eskolaite; Activated carbon; Synthesis; Adsorption; Dichromate; CHROMIUM-OXIDE CATALYSTS; CR2O3; NANOPARTICLES; DEPOSITION;

D O I：

10.1016/j.jcis.2012.01.059

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel technique has been devised for the synthesis of microporous alpha-Cr2O3 (eskolaite). The technique was based on the formation of amorphous-Cr2O3 onto microporous activated carbon through adsorption-reduction of dichromate ions (Cr2O72-) at the activated carbon/aqueous solution interface. Then, the Cr2O3-loaded carbon was thermally processed under oxidizing conditions to remove the carbon and ;recover the chromium oxide as alpha-Cr2O3. Both the Cr2O3-loaded carbon and the synthetic product were characterized by XRD. SEM, surface area and pore volume measurements. The synthetic eskolaite assayed 97.3% Cr2O3 and its specific surface area was 15.48 m(2)/g and pore size of 16.1 angstrom. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：321 / 324

页数：4

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