NO storage and reduction properties of model manganese-based lean NO trap catalysts
نویسندگان
چکیده
منابع مشابه
NO(x) decomposition, storage and reduction over novel mixed oxide catalysts derived from hydrotalcite-like compounds.
Effective control and removal of nitrogen oxides (NO(x)) emission from vehicles exhausts under lean-burn condition is one of the most important targets in scientific research of environmental protection. A comprehensive introduction of NO(x) storage and reduction (NSR), the most promising lean-NO(x) control technology, is given including the sum-up of NSR materials, catalytic activity and relat...
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 کاملMicrokinetic Modelling of NO Reduction on Pt Catalysts
Abstract—The major harmful automobile exhausts are nitric oxide (NO) and unburned hydrocarbon (HC). Reduction of NO using unburned fuel HC as a reductant is the technique used in hydrocarbon-selective catalytic reduction (HC-SCR). In this work, we study the microkinetic modelling of NO reduction using propene as a reductant on Pt catalysts. The selectivity of NO reduction to N2O is detected in ...
متن کاملReduction of NOx by H2 over Pt-K/Al2O3 Lean NOx Trap catalysts
Introduction Lean NOx Trap (LNT) catalysts are viable catalysts for the abatement of NOx emissions from lean–burn engines [1]. These systems work under periodic cyclic conditions, alternating lean (NOx storage) and rich conditions during which the stored NOx are reduced by a reductant. Although PtBa/Al2O3 is a typical model catalyst for this application, systems containing K have also been prop...
متن کاملModeling and Simulation of NOx Abatement with Storage/Reduction Catalysts for Lean Burn and Diesel Engines
The removal of nitrogen oxides emitted by diesel and lean burn engines is one of the most important targets in catalytic exhaust aftertreatment research. Besides the selective catalytic reduction (SCR) reaction with ammonia the most promising approach is the NOx Storage and Reduction Catalyst (NSR) which utilizes the nitrogen oxides storage on barium sites to form nitrates during the lean phase...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Catalysis B: Environmental
سال: 2015
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2014.10.001