Intergrown New Zeolite Beta Polymorphs with Interconnected 12-Ring Channels Solved by Combining Electron Crystallography and Single-Crystal X-ray Diffraction
2012 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 24, no 19, 3701-3706 p.Article in journal (Refereed) Published
Two new polymorphs of zeolite beta, denoted as SU-78A and SU-78B, were synthesized by employing dicyclohexylammonium hydroxides as organic structuredirecting 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.
Place, publisher, year, edition, pages
2012. Vol. 24, no 19, 3701-3706 p.
porous material, zeolite, zeolite beta, intergrowth, polymorph, crystal structure determination, transmission electron microscopy, electron crystallography
Inorganic Chemistry Organic Chemistry
Research subject Structural Chemistry
IdentifiersURN: urn:nbn:se:su:diva-80854DOI: 10.1021/cm301654dISI: 000309505100005OAI: oai:DiVA.org:su-80854DiVA: diva2:557859
FunderSwedish Research Council