Journal
RSC ADVANCES
Volume 3, Issue 23, Pages 8811-8819Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra41400k
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Funding
- National Natural Science Foundation of China [51108258]
- Science and Technology Commission of Shanghai Municipality [10540500100, 11 nm0502200]
- Dongguan Science and Technology Project [2012108102038]
- Doctoral Fund of Ministry of Education of China [20123108120018]
- Key Subject of Shanghai Municipal Education Commission [J50102]
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The nanocomposites of highly-dispersed MnOx and CeOx on carbon nanotubes (CNTs) with a uniform structure are obtained via a novel in situ deposition strategy through a pyridine-thermal method and used for selective catalytic reduction (SCR) of NO with NH3 at low temperature. The influence of calcination temperature and the promotion effect of CeOx on the structural features of the MnOx-CeOx/CNTs are investigated. It is found that the appropriate calcination temperature could provide perfect crystallization and good dispersion of MnOx and CeOx components. The suitable CeOx loadings in the MnOx-CeOx/CNTs will lead to enhanced reducing ability, suggesting stronger interaction between CeOx, MnOx and CNTs. Compared with the MnOx-CeOx/CNTs prepared by an impregnation method, the MnOx-CeOx/CNTs obtained from the pyridine-thermal route presents better NH3-SCR activity within the working temperature range, excellent SO2 resistance as well as favourable stability. The MnOx-CeOx/CNT nanocomposites prepared by the pyridine-thermal route are good candidate catalysts for the NH3-SCR of NO.
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