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

• Published in: Molecules (Basel, Switzerland) Vol. 24; no. 16; p. 2972
• Main Authors: Qiu, Jiang-Zhen, Wang, Long-Fei, Jiang, Jiuxing
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 16.08.2019; MDPI
• Subjects: 2-D zeolite; Adamantane - chemistry; Adsorption; aluminophosphate; Aluminum phosphate; Aqueous solutions; Catalysis; Chemical Fractionation - methods; Crystal structure; Crystallization; Crystallography, X-Ray; Electron microscopy; Humans; Hydrogen bonding; Hydrothermal crystal growth; Infrared analysis; Microscopy; Microscopy, Electron, Scanning; NMR; Nuclear magnetic resonance; Organic chemistry; Porosity; Precursors; Raman spectroscopy; Rings (mathematics); Scanning electron microscopy; Single crystals; SYSU-6; Topology; Transmission electron microscopy; X ray analysis; X ray powder diffraction; X-ray diffraction; Zeolites; Zeolites - chemistry; China; 2-D zeolite; aluminophosphate; SYSU-6
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules24162972

Two-dimensional aluminophosphate is an important precursor of phosphate-based zeolites; a new Sun Yat-sen University No. 6 (SYSU-6) with |Hada| [Al (HPO )(PO ) ] has been synthesized in the hydrothermal synthesis with organic structure-directing agent (OSDA) of , ,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 Al, P and C 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 2 / , with a = 8.4119(3), b = 36.9876(12), c = 12.5674(3), α = 90°, β = 108.6770(10)°, γ = 90°, V = 3704.3(2) Å , Z = 4, R = 5.12%, for 8515 observed data (I > 2σ( )). The structure has a new 4,12-ring layer framework topology linked by alternating AlO and PO 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.