Design of practical Ce/CoMnAl-LDO catalyst for low-temperature NH3-SCR
نویسندگان
چکیده
منابع مشابه
COMBINED MERCURY REMOVAL AND LOW TEMPERATURE NH3-SCR OF NO WITH MnOx/TiO2 SORBENTS/CATALYSTS
MnOx/TiO2 catalysts/sorbents were investigated for flue gas purification via the simultaneous low-temperature NH3-SCR of NO and elemental Hg capture, in the temperature range 25-300 °C. In particular, the effects of the Mn precursor salt (acetate vs. nitrate) and of the TiO2 textural properties (nanotubes vs. random mesopores) on both deNOx and Hg capture efficiencies were addressed. The cataly...
متن کاملLow-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts
We have reported previously the excellent performance of Fe-exchanged ZSM-5 for selective catalytic reduction (SCR) of NO with ammonia at high temperatures (300–400 C). In this work, we found that the reaction temperature could be decreased to 200– 300 C when a small amount of noble metal (Pt, Rh, or Pd) was added to the Fe-ZSM-5. The SCR activity follows the order Pt/FeZSM-5 > Rh/Fe-ZSM-5 > Pd...
متن کاملLow-temperature SCR of NO with NH3 over USY-supported manganese oxide-based catalysts
A series of catalysts of manganese oxide, manganese–cerium and iron–manganese oxide supported on USY (ultra-stable Y zeolite) were studied for the low-temperature selective catalytic reduction (SCR) of NO with ammonia in the presence of excess oxygen. It was found that MnOx/USY have high activity and high selectivity to N2 in the temperature range 80–180 8C. The addition of iron and cerium oxid...
متن کاملImproved low temperature NH3-SCR performance of FeMnTiO(x) mixed oxide with CTAB-assisted synthesis.
FeMnTiOx mixed oxide is prepared by the CTAB-assisted co-precipitation method, and the transformation of anatase into rutile is inhibited by CTAB to some extent. The catalyst obtained in the present work shows nearly 100% NO conversion at 100-350 °C, more than 80% N2 selectivity at 75-200 °C, and excellent H2O durability for the selective catalytic reduction of NO by NH3 with a space velocity o...
متن کاملRadio-Frequency-Controlled Urea Dosing for NH3-SCR Catalysts: NH3 Storage Influence to Catalyst Performance under Transient Conditions
Current developments in exhaust gas aftertreatment led to a huge mistrust in diesel driven passenger cars due to their NOx emissions being too high. The selective catalytic reduction (SCR) with ammonia (NH₃) as reducing agent is the only approach today with the capability to meet upcoming emission limits. Therefore, the radio-frequency-based (RF) catalyst state determination to monitor the NH₃ ...
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ژورنال
عنوان ژورنال: Catalysis Communications
سال: 2020
ISSN: 1566-7367
DOI: 10.1016/j.catcom.2020.106037