Tracking the rearrangement of atomic configurations during the conversion of FAU zeolite to CHA zeolite.

ABSTRACT: In order to realize designed synthesis, understanding the formation mechanism of zeolites at an atomic level has long been aspired, but remains challenging due to the fact that the knowledge of atomic configurations of the species formed during the process is limited. We focus on a synthesis system that crystallizes CHA zeolite from FAU zeolite as the sole source of tetrahedral atoms of Si and Al, so that end-to-end characterization can be conducted. Solid-state ²⁹Si MAS NMR is followed by high-throughput computational modeling to understand how atomic configurations changed during the interzeolite conversion. This reveals that the structural motif commonly found in FAU and CHA is not preserved during the conversion; rather, there is a specific rearra

SUBMITTER: Muraoka K 

PROVIDER: S-EPMC6853086 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature