Intergrown new zeolite beta polymorphs with interconnected 12-ring channels solved by combining electron crystallography and single-crystal X-ray diffraction

Zhengbao Yu, Yu Han, Lan Zhao, Shiliang Huang, Qiyu Zheng, Shuangzheng Lin, Armando C. Cõrdova, Xiaodong Zou, Junliang Sun

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

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. © 2012 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)3701-3706
Number of pages6
JournalChemistry of Materials
Volume24
Issue number19
DOIs
StatePublished - Sep 27 2012

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

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