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Few‐Unit‐Cell MFI Zeolite Synthesized using a Simple Di‐quaternary Ammonium Structure‐Directing Agent
Author(s) -
Lu Peng,
Ghosh Supriya,
Dorneles de Mello Matheus,
Kamaluddin Huda Sharbini,
Li Xinyu,
Kumar Gaurav,
Duan Xuekui,
Abeykoon Milinda,
Boscoboinik J. Anibal,
Qi Liang,
Dai Heng,
Luo Tianyi,
AlThabaiti Shaeel,
Narasimharao Katabathini,
Khan Zaheer,
Rimer Jeffrey D.,
Bell Alexis T.,
Dauenhauer Paul,
Mkhoyan K. Andre,
Tsapatsis Michael
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202104574
Subject(s) - zeolite , ammonium , isomerization , chemistry , hydrocarbon , catalysis , chemical engineering , methanol , materials science , inorganic chemistry , organic chemistry , engineering
Synthesis of a pentasil‐type zeolite with ultra‐small few‐unit‐cell crystalline domains, which we call FDP (few‐unit‐cell crystalline domain pentasil), is reported. FDP is made using bis‐1,5(tributyl ammonium) pentamethylene cations as structure directing agent (SDA). This di‐quaternary ammonium SDA combines butyl ammonium, in place of the one commonly used for MFI synthesis, propyl ammonium, and a five‐carbon nitrogen‐connecting chain, in place of the six‐carbon connecting chain SDAs that are known to fit well within the MFI pores. X‐ray diffraction analysis and electron microscopy imaging of FDP indicate ca. 10 nm crystalline domains organized in hierarchical micro‐/meso‐porous aggregates exhibiting mesoscopic order with an aggregate particle size up to ca. 5 μm. Al and Sn can be incorporated into the FDP zeolite framework to produce active and selective methanol‐to‐hydrocarbon and glucose isomerization catalysts, respectively.