Effect of Ce substituted hydrotalcite-derived mixed oxides on total catalytic oxidation of air pollutant.

被引：19
作者：
Genty, E. [1 ]
Brunet, J. [1 ]
Pequeux, R. [1 ]
Capelle, S. [1 ]
Siffert, S. [1 ]
Cousin, R. [1 ]
机构：
[1] ULCO, UCEIV EA 4492, F-59140 Dunkerque, France
来源：
MATERIALS TODAY-PROCEEDINGS | 2016年 / 3卷 / 02期
关键词：
Mixed oxides; Hydrotalcite; Cerium; Cobalt; Toluene; Catalytic oxidation; LAYERED DOUBLE HYDROXIDES; VOC OXIDATION; CO; TOLUENE; CERIUM;
D O I：
10.1016/j.matpr.2016.01.069
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Co6Al2-yCeyHT hydrotalcite like compounds were synthesized by co-precipitation method. Hydrotalcite structure as well as the mixed oxides obtained after calcination were studied by several physic-chemical techniques: N-2-Sorption, XRD, H-2-TPR. The mixed oxides were also tested for the toluene total oxidation. The physico-chemical studies revealed modifications in the structural characteristics (surface area, morphology) as well as in reducibility properties of the formed mixed oxides. The solid containing the higher cerium content was the most active in this reaction. Furthermore, relation between the reducibility and T-50 for the toluene oxidation was demonstrated, suggesting a Mars Van Krevelen mechanism for the toluene total oxidation with Co-Al mixed oxide. The key factor of these solids is the dispersion of the ceria in the solid. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：277 / 281
页数：5
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