The NOx Reduction Mechanism by H2 under near Isothermal Conditions over Pt-K/Al2O3 Lean NOx Trap Systems

被引：4

作者：

Castoldi, L. ^{[1
]}

Lietti, L. ^{[1
]}

Matarrese, R. ^{[1
]}

Forzatti, P. ^{[1
]}

机构：

[1] Politecn Milan, Ctr Excellence NEMAS, Dipartimento Energia, Lab Catalysis & Catalyt Proc, I-20133 Milan, Italy

来源：

TOPICS IN CATALYSIS | 2009年 / 52卷 / 13-20期

关键词：

Lean NOx Trap; Pt-K/Al2O3; catalysts; Reduction mechanisms; NOx storage-reduction; STORAGE-REDUCTION; FT-IR; CATALYSTS; ADSORPTION;

D O I：

10.1007/s11244-009-9331-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The reduction of NOx stored over a Pt-K/Al2O3 Lean NOx Trap is analyzed when H-2 is used as reductant. An in series 2-steps process is herein proposed, involving at first the formation of NH3 upon reaction of nitrates with H-2 (step 1), followed by the reaction of NH3 with residual nitrates to give N-2 (step 2).

引用

页码：1713 / 1718

页数：6

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