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SYSU-6, A New 2-D Aluminophosphate Zeolite Layer Precursor.


ABSTRACT: Two-dimensional aluminophosphate is an important precursor of phosphate-based zeolites; a new Sun Yat-sen University No. 6 (SYSU-6) with |Hada|2[Al2(HPO4)(PO4)2] has been synthesized in the hydrothermal synthesis with organic structure-directing agent (OSDA) of N,N,3,5-tetramethyladamantan-1-amine. In this paper, SYSU-6 is characterized by single-crystal/powder X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, transmission electron microscopy, infrared and UV Raman spectroscopy, solid-state 27Al, 31P and 13C magic angle spinning (MAS) NMR spectra, and elemental analysis. The single-crystal X-ray diffraction structure indicates that SYSU-6 crystallized in the space group P21/n, with a = 8.4119(3), b = 36.9876(12), c = 12.5674(3), ? = 90°, ? = 108.6770(10)°, ? = 90°, V = 3704.3(2) Å3, Z = 4, R = 5.12%, for 8515 observed data (I > 2?(I)). The structure has a new 4,12-ring layer framework topology linked by alternating AlO4 and PO4 tetrahedra. The organic molecules reside between the layers and are hydrogen-bonded to the inorganic framework. The new type of layer provides a greater opportunity to construct zeolite with novel topology.

SUBMITTER: Qiu JZ 

PROVIDER: S-EPMC6720306 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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SYSU-6, A New 2-D Aluminophosphate Zeolite Layer Precursor.

Qiu Jiang-Zhen JZ   Wang Long-Fei LF   Jiang Jiuxing J  

Molecules (Basel, Switzerland) 20190816 16


Two-dimensional aluminophosphate is an important precursor of phosphate-based zeolites; a new Sun Yat-sen University No. 6 (SYSU-6) with |Hada|<sub>2</sub>[Al<sub>2</sub>(HPO<sub>4</sub>)(PO<sub>4</sub>)<sub>2</sub>] has been synthesized in the hydrothermal synthesis with organic structure-directing agent (OSDA) of <i>N</i>,<i>N</i>,3,5-tetramethyladamantan-1-amine. In this paper, SYSU-6 is characterized by single-crystal/powder X-ray diffraction, scanning electron microscopy, energy-dispersive  ...[more]

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