Influence of OH/metal ratio on the stability of AlFe-PILC catalyst for wet peroxide oxidation of phenol

被引：6

作者：

Kiss, EE

Vulic, TJ

Boskovic, GC

Reitzmann, AFK

Lázár, K

机构：

[1] Univ Novi Sad, Fac Technol, Novi Sad 21000, Serbia Monteneg

[2] Univ Karlsruhe, Inst Chem Proc Engn, Karlsruhe, Germany

[3] Hungarian Acad Sci, Dept Catalysis & Tracer, Inst Isotopes, H-1525 Budapest, Hungary

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2005年 / 85卷 / 01期

关键词：

AlFe-pillared montmorillonite; OH/metal ratio; phenol decomposition;

D O I：

10.1007/s11144-005-0237-y

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：

AlFe-pillared clay catalyst with OH/metal = 4; 5 mmol metal/g clay and Al : Fe = 5 : 5 swells intensively in phenol-water solution and has no measurable catalytic activity in phenol removal from water solutions, in contrast to the similar catalyst with OH/metal = 2. The different behavior of two samples can be explained first of all by differences in iron ion distribution in the catalysts as a consequence of applied pillaring solutions prepared at different OH/metal ratios. In the sample with OH/metal = 2 iron ions are uniformly distributed on the AlFe-pillars, while in the sample with OH/metal = 4 iron ions appear not only on the pillars but also as a bulk FeO center dot Fe(2)O3 center dot form. The results obtained by FTIR, SEM, TPR and Mossbauer spectroscopy reveal the differences in acid-base properties, morphology and iron ion distribution in the samples.

引用

页码：11 / 19

页数：9