Effect of Fe and Ce on Al-pillared bentonite and their performance in catalytic oxidation reactions

被引：98

作者：

Carriazo, J. G.

Centeno, M. A.

Odriozola, J. A.

Moreno, S.

Molina, R.

机构：

[1] Univ Nacl Colombia, Estado Solido & Catalisis Ambiental, Dept Quim, Bogota, Colombia

[2] Univ Seville, Ctr Mixto, CSIC, Inst Ciencia Mat Sevilla, Seville 41092, Spain

来源：

APPLIED CATALYSIS A-GENERAL | 2007年 / 317卷 / 01期

关键词：

pillared clay; CWPO reaction; CO oxidation; VOCs oxidation; environmental catalysis;

D O I：

10.1016/j.apcata.2006.10.009

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 Colombian bentonite was modified by intercalation with polyhydroxocationic solutions of Al3+ containing Fe3+ and Ce3+. Addition of these solutions led to the formation of pillared clays with important catalytic properties in three environmental impact reactions: phenol oxidation in diluted aqueous medium, oxidation of CO and 2-propanol oxidation in gas phase. The catalytic tests revealed the activity of the introduced iron species and the promoter effect of the cerium on the catalytic activity of these species. X-ray diffraction and the transmission electron microscopy results indicated, respectively, the formation of oxide nanoparticles inside and outside of the interlayer spaces of the clay mineral structure. Mossbauer spectroscopy analysis revealed the presence of iron oxides with oxidation state +3 and hematite structure on the solids. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：120 / 128

页数：9

共 47 条

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