Controllable positions of Cu<sup>2+</sup> to enhance low-temperature SCR activity on novel Cu-Ce-La-SSZ-13 by a simple one-pot method
Zhiqiang Chen, Lei Guo, Hongxia Qu, Li Liu, Huifang Xie, Qin Zhong
Abstract
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.
Topics & Concepts
CatalysisSelective catalytic reductionIonChemistryMetalCombinatorial chemistryMetal ions in aqueous solutionNuclear chemistryInorganic chemistryMaterials scienceOrganic chemistryCatalytic Processes in Materials ScienceZeolite Catalysis and SynthesisMetal-Organic Frameworks: Synthesis and Applications