Direct Imaging and Location of Pb²⁺ and K⁺ in EMT Framework-Type Zeolite.

ABSTRACT: The understanding of the structural framework and metal locations within zeolites are two critical aspects to tune and further exploit their properties as heterogeneous catalysts, advanced optical devices, or as water remediation materials. The development of electron microscopy has made it possible to observe directly the zeolitic framework and the distribution of extra framework cations within the pores at the atomic level. Here, we have studied the EMT framework providing data with an unprecedented spatial resolution, which have allowed the analysis of the FAU domains present in the framework. Additionally, potassium and lead (introduced by aqueous ion exchange), which were nonperiodically distributed in the pores have been located. An alternative image mode, annular brigh

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC8482759 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature