Intergrown New Zeolite Beta Polymorphs with Interconnected 12-Ring Channels Solved by Combining Electron Crystallography and Single-Crystal X-ray Diffraction
Source abstract
Abstract
Two new polymorphs of zeolite beta, denoted as SU-78A and SU-78B, were synthesized by employing dicyclohexylammonium hydroxides as organic structure-directing agents. The structure was solved by combining transmission electron microscopy and single-crystal X-ray diffraction. SU-78 is an intergrowth of SU-78A and SU-78B and contains interconnected 12-ring channels in three directions. The two polymorphs are built from the same building layer, similar to that for the zeolite beta family. The layer stacking in SU-78, however, is different from those in zeolite beta polymorph A, B, and C, showing new zeolite framework topologies. SU-78 is thermally stable up to 600 °C.
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Research context
OpenAlex topics: Zeolite Catalysis and Synthesis · Chemical Synthesis and Characterization · Mesoporous Materials and Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm SE−106 91, Sweden
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
Advanced Membranes and Porous Materials Center & Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal 21534, Saudi Arabia
Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE−106 91, Sweden
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