Atomic-Scale Insights into the Cu Ion Distribution in Zeolites Used for Ammonia Selective Catalytic Reduction During Early Hydrothermal Degradation

Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D5CC06274H, Communication Masahiko Shimizu, Katsuaki Nakazawa, Hisashi Shima, Hajime Matsumoto, Takahiko Takewaki, Kazutaka Mitsuishi, Ayako Hashimoto Early hydrothermal degradation of Cu-SSZ-13 and Cu-SSZ-39 zeolites with similar Cu content was investigated. Electron ptychography revealed the Cu occupancy at the eight-membered ring sites of Cu-SSZ-39 is lower than...