Selective NOx reduction during the H2+NO+O2 reaction under oxygen-rich conditions over Pd/V2O5/Al2O3:: evidence for in situ ammonia generation

被引：28

作者：

Macleod, N ^{[1
]}

Lambert, RM ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

CATALYSIS LETTERS | 2003年 / 90卷 / 3-4期

关键词：

NO; palladium; H-2; N2O; lean burn; Al2O3; V2O5; FTIR; DRIFTS;

D O I：

10.1023/B:CATL.0000004113.89067.1d

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：

Under oxygen-rich conditions in H-2 + NO + O-2 mixtures, Pd/V2O5/Al2O3 catalysts are active and highly selective (similar to80%) for NOx reduction to N-2. In situ DRIFT spectroscopy and reactor data show that the system operates via formation of NHx species on the highly dispersed V2O5 component. Both NH3 and NH4+ are formed, with the latter dominant. The role of the palladium component is also discussed.

引用

页码：111 / 115

页数：5

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