Publications by authors named "Running Kang"
Improving Copper Active Site Speciation on Cu-Ce/SSZ-13 for Ammonia Oxidation via Si/Al Ratio Modulation.
ACS Appl Mater Interfaces
May 2024
Catalytic oxidation is a promising purification technique for ammonia (NH) emission. However, high ignition temperatures and NO peroxide generation limit its effectiveness due to a lack of active sites. Herein, the effects of Si/Al ratio (SAR) modulation on the speciation of copper active sites and the reaction mechanism at different acidic sites were investigated by loading CuO-CeO onto SSZ-13 with different SARs (Cu-Ce/SAR15, 20, and 30).
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- Efficiently reducing harmful nitrogen oxides (NO) in low-temperature diesel exhausts during cold starts poses a significant challenge, with passive NO adsorbers (PNA) showing potential to capture and release NO at varying temperatures.
- This review highlights advancements in material design and system integration for palladium-exchanged zeolites, focusing on the synthesis process, aging effects, and performance of these materials.
- It also explores the mechanistic understanding of NO storage and release, interactions with exhaust components, and discusses practical applications and challenges in implementing Pd-zeolite-based PNA for cold-start NO emissions reduction.