An overview of lean exhaust denox aftertreatment technologies and nox emission regulations in the european union

T Selleri, AD Melas, A Joshi, D Manara, A Perujo… - Catalysts, 2021 - mdpi.com
This paper reviews the recent advances in the management of nitrogen oxide (NOx)
emissions from the internal combustion engine of light-duty and heavy-duty vehicles …

SO2-tolerant NOx reduction over SO42--coordinated Cu-SAPO-34 catalysts via protecting the reduction and re-oxidation of Cu sites

J He, S Impeng, J Zhang, J Zhang, P Wang… - Chemical Engineering …, 2022 - Elsevier
Selective catalytic reduction of NO x from mobile source over Cu-SAPO-34 catalysts always
suffer from sulfur poisoning in practical applications. The pore blockage and loss of active …

Optimizing acid promoters of Ce-based NH3-SCR catalysts for reducing NOx emissions

S Liu, P Yao, Q Lin, S Xu, M Pei, J Wang, H Xu, Y Chen - Catalysis Today, 2021 - Elsevier
WO 3 and MoO 3 are often used as acidic promoters to modify vanadium based and non-
vanadium based composite oxide catalysts, meanwhile, the NH 3-SCR performance of the …

Global kinetic modeling of NH3-SCR with two sites of NH3 storage on Cu-SSZ-13

Z Gao, J Pihl, T LaClair, B Fricke - Chemical Engineering Journal, 2021 - Elsevier
A comprehensive selective catalytic reduction (SCR) model is developed to detail the global
kinetic reactions in the catalyst which is involved in two type of sites for high-and low …

Numerical study on knock characteristics and mechanism of a heavy duty natural gas/diesel RCCI engine

W Zhou, H **, S Zhou, Z Zhang, M Shreka - International Journal of …, 2022 - Elsevier
In this paper, the knock phenomenon of reactivity controlled compression ignition (RCCI)
engine fueled with natural gas/diesel was numerically studied. The knock mechanism of the …

Performance evaluation of neural networks in modeling exhaust gas aftertreatment reactors

B Sarkar, SR Gundlapally, P Koutsivitis… - Chemical Engineering …, 2022 - Elsevier
A comprehensive evaluation of neural network (NN) methods to model exhaust gas
aftertreatment reactors is presented in this study. A combination of non-linear autoregressive …

Cation migration in siliceous CHA probed with DFT simulation and its catalytic implication

KS Shin, SH Park, SJ Cho - Catalysis Today, 2023 - Elsevier
The migration or diffusion of cations in siliceous CHA with an approximate Si/Al ratio of 11
has been investigated to explore the impact of their location on catalytic performance, using …

Mechanism-based kinetic modeling of N2O formation on SCR activity over Cu-SSZ-13 catalysts for diesel vehicle

D Yao, Y Li, B Liu, X Hu, F Wu - Applied Catalysis A: General, 2022 - Elsevier
A three-site SCR model including Z2Cu, ZCuOH and Brönsted acid sites has been
developed for accurately describing SCR reactions and N 2 O formation over Cu-SSZ-13 …

An explicit reduced-order model of Cu-Zeolite SCR catalyst for embedding in ECM

R Daya, SY Joshi, RK Dadi, Y Tang, D Trandal… - Chemical Engineering …, 2021 - Elsevier
A piecewise analytical solution is developed as part of an explicit reduced-order model for a
state-of-the-art Cu-SSZ-13 SCR catalyst in the degreened state (550° C-4 h). Simplifying the …

Origins of Bi-modal NO conversion behavior in NH3-SCR over Cu-chabazite revealed by mass transfer and surface kinetics analysis

SE Bozbağ, TB Sarı, GH Karadağ, D Şanlı… - Chemical Engineering …, 2022 - Elsevier
A multi-site kinetic model for the NH 3-SCR (Selective Catalytic Reduction) on a commercial
Cu-Chabazite washcoated monolith catalyst was developed and validated using synthetic …