Total oxidation of toluene over gold supported on mesoporous ferrisilicates materials

被引：4
|
作者：
Benais-Hamidi, Faiha [1 ]
Cherif-Aouali, Leila [1 ]
Siffert, Stephane [2 ]
Cousin, Renaud [2 ]
Bengueddach, Abdelkader [3 ]
机构：
[1] Univ Tlemcen, Lab Catalyse & Synthese Chim Organ, BP 119, Tilimsen, Algeria
[2] ULCO, UCEIV EA 4492, F-59140 Dunkerque, France
[3] Univ Oran, Lab Chim Mat, Es Senia, Algeria
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION | 2015年 / 58卷 / 03期
关键词：
mesoporous ferrisilicates; gold; total oxidation; toluene; VOLATILE ORGANIC-COMPOUNDS; STRONGLY ACIDIC MEDIA; OXIDE CATALYSTS; IRON; TITANOSILICATES; PRECURSORS; SILICA;
D O I：
10.1504/IJEP.2015.077177
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Mesoporous ferrisilicates MFS-n (n = Si /Fe) with different Si/Fe molar ratio (Si/Fe = 20, 135) were synthesised by the assembly of Fe MFI nanoclusters with triblock copolymers in strongly acidic media. Au/MFS-n catalysts were prepared by deposition-precipitation with urea (DPU) with a loading of gold of 1 wt%. They were characterised by various techniques including XRD, BET, FT-IR spectroscopy; diffuse reflectance UV-vis (DRUV-vis), TPR. Total oxidation of toluene was investigated on MFS-n and Au/MFS-n. The catalytic activity of MFS-n materials for total toluene oxidation is considerably enhanced as the iron content increases. The presence of gold improves the catalytic activity of MFS-n towards the combustion of toluene, the extent of this effect depending on the Si/Fe molar ratio. The catalysts are totally selective for CO2 and H2O.
引用
收藏
页码：187 / 196
页数：10
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