Influence of the Alumina Precursor on the Activity of Structured Fe-K/Al2O3 Catalysts Towards the Simultaneous Removal of Soot and NOx

被引：0
作者：
Ascaso, S. [1 ]
Galvez, M. E. [1 ,2 ,3 ]
Moliner, R. [1 ]
Lazaro, M. J. [1 ]
Da Costa, P. [2 ,3 ]
机构：
[1] CSIC, Inst Carboquim, Miguel Luesma Castan 4, Zaragoza 50018, Spain
[2] UPMC Sorbonne Univ, Univ Paris 06, Inst Jean Le Rond dAlembert, 2 Pl Gare Ceinture, F-78210 St Cyr Lecole, France
[3] Inst Jean Le Rond dAlembert, CNRS, UMR 7190, 2 Pl Gare Ceinture, F-78210 St Cyr Lecole, France
来源：
TOPICS IN CATALYSIS | 2017年 / 60卷 / 3-5期
关键词：
Exhaust gas cleaning; Soot; NOx; Washcoat; Structured catalysts; DIESEL SOOT; NITROGEN-OXIDES; COMBUSTION; STABILITY; CO;
D O I：
10.1007/s11244-016-0623-x
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Fe-K/Al2O3 catalysts supported on cordierite monoliths were prepared using four washcoating suspensions containing different dispersible boehmites. The influence of the inherent properties of these alumina precursors on the textural properties, morphology and mechanical integrity of the catalytic layer were studied together with the activity of the monolithic catalyst in the simultaneous removal of soot and NOx. The textural and structural properties of the washcoat strongly determine the mobility of potassium species and therefore the activity of the different catalyst prepared. Calcination at 650 A degrees C and complete removal of such mobile potassium nitrate species results in similar activity that no longer depends on the textural and morphological properties of the catalytic layer, determined by the type of alumina precursor used.
引用
收藏
页码：355 / 360
页数：6
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