Comparative study of catalytic oxidation of ethanol to acetaldehyde using Fe(III) dispersed on Sb2O5 grafted on SiO2 and on untreated SiO2 surfaces

被引：11

作者：

Benvenutti, EV

Gushikem, Y

机构：

[1] UFRGS, Inst Quim, LSS, BR-91501970 Porto Alegre, RS, Brazil

[2] UNICAMP, Inst Quim, BR-13081970 Campinas, SP, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 1998年 / 9卷 / 05期

关键词：

modified silica; silica supported iron antimony; phase ethanol oxidation;

D O I：

10.1590/S0103-50531998000500011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe(III) was supported on Sb(V) oxide grafted on the silica gel surface and directly on the silica gel surface using ion-exchange and impregnation processes producing Fe/Sb/SiO2 and Fe/SiO2, respectively. The catalytic conversion of ethanol to acetaldehyde was much more efficient using Fe/Sb/SiO2 than Fe/SiO2 as catalyst. This higher efficiency of the former catalyst takes into account two aspects: a) the new phase FeSbO4 formed when Fe/Sb/SiO2 is heat treated and, b) it is higher dispersion on the matrix.

引用

页码：469 / 472

页数：4

共 20 条

[1] Evidence for formation of the FeSbO4 phase at the surface of poreless silica [J].