Progress and future challenges in passive NO adsorption over Pd/zeolite catalysts
Future emission standards are becoming increasingly stringent. Around 50% of targeted
tailpipe emissions are emitted during the cold-start period, mainly due to the ineffectiveness …
tailpipe emissions are emitted during the cold-start period, mainly due to the ineffectiveness …
Cold-Start NOx Mitigation by Passive Adsorption Using Pd-Exchanged Zeolites: From Material Design to Mechanism Understanding and System Integration
It remains a major challenge to abate efficiently the harmful nitrogen oxides (NO x) in low-
temperature diesel exhausts emitted during the cold-start period of engine operation …
temperature diesel exhausts emitted during the cold-start period of engine operation …
Condition-dependent Pd speciation and NO adsorption in Pd/zeolites
Metal ions exchanged on zeolites represent a unique bridge between heterogeneous solid
materials and homogeneous inorganic chemistry. The complexing of exchanged metal ions …
materials and homogeneous inorganic chemistry. The complexing of exchanged metal ions …
Structural interconversion between agglomerated palladium domains and mononuclear Pd (II) cations in chabazite zeolites
Palladium-exchanged zeolites are candidate materials for passive NO x adsorption in
automotive exhaust aftertreatment, where mononuclear Pd cations behave as precursors to …
automotive exhaust aftertreatment, where mononuclear Pd cations behave as precursors to …
NOx uptake and release on Pd/SSZ-13: Impact Of Feed composition and temperature
Abstract The Passive NOx Adsorber (PNA) is an emerging technology to abate cold-start
NOx emissions from lean combustion vehicles. Binding sites on Pd-exchanged zeolites …
NOx emissions from lean combustion vehicles. Binding sites on Pd-exchanged zeolites …
Stabilization of Super Electrophilic Pd+2 Cations in Small-Pore SSZ-13 Zeolite
We provide the first observation and characterization of super electrophilic metal cations on
a solid support. For Pd/SSZ-13, the results of our combined experimental (Fourier transform …
a solid support. For Pd/SSZ-13, the results of our combined experimental (Fourier transform …
Unravelling Phosphorus-Induced Deactivation of Pd-SSZ-13 for Passive NOx Adsorption and CO Oxidation
Phosphorus (P) originating from lubricant oil additives or biofuels is an emerging chemical
poison in catalytic systems for automotive exhaust after-treatment. Here, we demonstrate …
poison in catalytic systems for automotive exhaust after-treatment. Here, we demonstrate …
Investigation of an irreversible NOx storage degradation Mode on a Pd/BEA passive NOx adsorber
Abstract Passive NOx adsorbers (PNAs) are a proposed solution for cold start NOx
emissions, via low temperature NOx trapping and subsequent release at a temperature …
emissions, via low temperature NOx trapping and subsequent release at a temperature …
Investigation of crystal size effect on the NOx storage performance of Pd/SSZ-13 passive NOx adsorbers
Z Chen, M Wang, J Wang, C Wang, J Wang… - Applied Catalysis B …, 2021 - Elsevier
The crystal size effect on the NOx adsorption and desorption over Pd/SSZ-13 passive NOx
adsorbers (PNA) was investigated. SSZ-13 zeolites with various crystal size (0.4, 0.8, and …
adsorbers (PNA) was investigated. SSZ-13 zeolites with various crystal size (0.4, 0.8, and …
Palladium/Ferrierite versus Palladium/SSZ‐13 Passive NOx Adsorbers: Adsorbate‐Controlled Location of Atomically Dispersed Palladium (II) in Ferrierite Determines …
Pd‐loaded FER and SSZ‐13 zeolites as low‐temperature passive NOx adsorbers (PNA) are
compared under practical conditions. Vehicle cold start exposes the material to CO under a …
compared under practical conditions. Vehicle cold start exposes the material to CO under a …