Synthesis of self-pillared zeolite nanosheets by repetitive branching

Xueyi Zhang, Dongxia Liu, Dandan Xu, Shunsuke Asahina, Katie A. Cychosz, Kumar Varoon Agrawal, Yasser Al Wahedi, Aditya Bhan, Saleh Al Hashimi, Osamu Terasaki, Matthias Thommes, Michael Tsapatsis

Research output: Contribution to journalArticlepeer-review

455 Scopus citations

Abstract

Hierarchical zeolites are a class of microporous catalysts and adsorbents that also contain mesopores, which allow for fast transport of bulky molecules and thereby enable improved performance in petrochemical and biomass processing. We used repetitive branching during one-step hydrothermal crystal growth to synthesize a new hierarchical zeolite made of orthogonally connected microporous nanosheets. The nanosheets are 2 nanometers thick and contain a network of 0.5-nanometer micropores. The house-of-cards arrangement of the nanosheets creates a permanent network of 2- to 7-nanometer mesopores, which, along with the high external surface area and reduced micropore diffusion length, account for higher reaction rates for bulky molecules relative to those of other mesoporous and conventional MFI zeolites.

Original languageEnglish (US)
Pages (from-to)1684-1687
Number of pages4
JournalScience
Volume336
Issue number6089
DOIs
StatePublished - Jun 29 2012

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