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
收藏
页码：111 / 115
页数：5
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