Promoting Ag/Al2O3 Performance in Low-Temperature H2-C3H6-SCR by Thermal Pretreatment of γ-Alumina in Water

被引：11
作者：
Chaieb, Tesnim [1 ]
Delannoy, Laurent [1 ]
Louis, Catherine [1 ]
Thomas, Cyril [1 ]
机构：
[1] Sorbonne Univ, UPMC Univ Paris 06, UMR CNRS 7197, Lab Reactivite Surface, 4 Pl Jussieu,Tour 43-53,3eme Etage,Case 178, F-75252 Paris, France
来源：
CATALYSIS LETTERS | 2016年 / 146卷 / 12期
关键词：
Selective catalytic reduction; NOx-TPD; UV-vis; SELECTIVE CATALYTIC-REDUCTION; MECHANOCHEMICAL PREPARATION; NOX; SCR; AG; SURFACE; HYDROGEN; ADSORPTION; METHANOL; AL2O3;
D O I：
10.1007/s10562-016-1864-9
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：
The present work highlights for the first time that a thermal treatment of gamma-Al2O3 in water at 80 A degrees C for 24 h prior to Ag deposition (Ag/Al2O3-OH) leads to a drastic enhancement of H-2-C3H6-SCR performance at low temperature. This enhancement is attributed to the higher NO (x) coverage on Ag/Al2O3-OH compared with that of Ag/Al2O3. The higher NO (x) adsorption capacity of the sample prepared from the gamma-Al2O3 thermally-treated in water is proposed to result from the preferential interaction of Ag with newly-created Al2O3 anchoring sites (Al(OH)(3) bayerite domains), which were not available on the untreated pristine support. [GRAPHICS] .
引用
收藏
页码：2622 / 2629
页数：8
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