Catalytic wet peroxide oxidation of phenol over mixed [Al-Cu]-pillared clays

被引:11
作者
Abdellaoui, M
Barrault, J
Bouchoule, C
Srasra, NF
Bergaya, F
机构
[1] ESIP, UMR 6503 CNRS, Catalyse Chim Organ Lab, F-86022 Poitiers, France
[2] CNRS, Ctr Rech Mat Divisee, F-45071 Orleans 2, France
关键词
phenol; oxidation; Wet Peroxide Oxidation (WPO); pillared clays;
D O I
10.1051/jcp:1999148
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Various processes can be used for the treatment of wastewater, but the one we feel to be important and more promising is the wet peroxide oxidation (WPO), in the presence of a solid catalyst, at atmospheric pressure and at room temperature. Different types of materials can be used as catalysts for such reactions, but as shown in previous studies dealing with phenol oxidation clays-based catalysts seem to be attractive. It is well known that natural clays are inactive in the phenol oxidation, but the intercalation of polymeric species changes their properties. When the clay is pillared with pure aluminum oxyhydroxides species, the d(001) spacing and the surface area increase, but the activity is very low. When the clay is pillared with mixed [Al-Cu] there is a strong increase of the phenol conversion. Nevertheless W (Wyoming) based solids are more active than H (Haidoudi) or L (Laponite) based catalysts. The stability, the activity and the percentage of copper depend on the preparation method.
引用
收藏
页码:419 / 429
页数:11
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