期刊
INORGANIC CHEMISTRY
卷 57, 期 18, 页码 11753-11760出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b01890
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资金
- Swedish Research Council (VR)
- Swedish Governmental Agency for Innovation Systems (VINNOVA)
- Knut & Alice Wallenberg Foundation through Project 3DEM-NATUR
Two-dimensional zeolitic materials have drawn increasing attention because of their structural diversity, high accessible surface areas, and potential as precursors to form novel three-dimensional (3D) structures. Here we report a new layered fluoroaluminophosphate, denoted as EMM-9 (ExxonMobil Material #9), synthesized in the same synthesis system as that for a previously reported 3D framework structure EMM-8 (framework-type code: SFO) using an F- medium and 4-(dimethylamino)pyridine (DMAP) as the organic structure-directing agent. The structure of EMM-9 was solved from rotation electron diffraction data and refined against synchrotron powder X-ray diffraction data. The fluoroaluminophosphate layer of EMM-9 is composed of sti composite building units. The DMAP cations are located between the layers. pi-pi interactions between the DMAP cations and hydrogen bonding between the DMAP cations and layers were identified. The layered EMM-9 structure is closely related to the 3D framework structure of EMM-8 and can be transformed to EMM-8 by calcination.
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