Chen Zhiqiang, Guo Lei, Qu Hongxia, Liu Li, Xie Huifang, Zhong Qin
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Chem Commun (Camb). 2020 Feb 20;56(15):2360-2363. doi: 10.1039/c9cc09734a.
Adjusting the position of active components is critical to enhancing the activity of CHA structured small-pore zeolites for NO selective catalytic reduction. We herein synthesized a novel low-cost multi-metal Cu-Ce-La-SSZ-13 catalyst via a simple one-pot method and revealed the relationship between the position of active species and catalytic activity. The introduction of Ce4+ ions and La3+ ions can effectively regulate the Cu2+ cations to migrate from eight-membered rings to more active six-membered rings, which endows Cu-Ce-La-SSZ-13 with excellent low-temperature SCR activity.
