Improvement of loose contact diesel soot oxidation by synergic effects between metal oxides in K2O-V2O5/ZSM-5 catalysts

被引：10
作者：
Abdullah, A. Z. [1 ]
Abdullah, H. [1 ]
Bhatia, S. [1 ]
机构：
[1] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia
来源：
CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 06期
关键词：
diesel soot; oxidation; K2O-V2O5/ZSM-5; loose contact; synergic effect;
D O I：
10.1016/j.catcom.2007.11.003
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：
Diesel soot oxidation in loose contact with 15 wt.% CuO/, V2O5/, Fe2O3/ and K2O-V2O5/ZSM-5 catalysts at a ratio of 9:1 was studied. V2O5/ZSM-5 was the most active with a peak activity at 4.50 degrees C. Further improvement was achieved with the incorporation of 4.5 wt.% K2O, attributed to the mobility of potassium upon melting. Chemical interactions between the K2O and extra framework silicon resulted in potassium silicate formation. Sintering of oxides towards the end of the oxidation process resulted in a delay in the completion of soot oxidation. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1196 / 1200
页数：5
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