A kind of coordination polymer porous material maf-49 and its preparation method and application
A coordination polymer, MAF-49 technology, applied in waste fuels, separation methods, zinc organic compounds, etc., can solve the problems of insufficient separation efficiency and high energy consumption, and achieve good thermal and chemical stability, Good thermal stability and improved purification efficiency
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[0034] Example 1 Preparation of porous material MAF-49 single crystal
[0035] Ligand H 2 batz is synthesized with reference to prior art methods;
[0036] the ligand H 2 batz (0.180 g, 1.0 mmol), Zn(OH) 2 (0.100 g, 1.0 mmol), ammonia water (25%, 4 mL), and water (4 mL) were added to a hydrothermal reactor, heated to 160 °C, and reacted for 3 days to obtain a colorless single crystal of MAF-49. The rate is 86%.
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[0037] Example 2 Structural characterization of guest molecule and MAF-49 without guest
[0038] Single-crystal X-ray diffraction data were collected on a Bruker Smart APEX CCD diffractometer, graphite monochromator, with Mo-K rays, collected in ω scan mode, and absorption corrections were performed using the REQAB program. The direct method is used for analysis, then the difference Fourier function method and the least square method are used to obtain the coordinates of all non-hydrogen atoms, and finally the structure is corrected by the least square method. The hydrogen atoms of the compounds are obtained by theoretical hydrogenation. Calculations are done on a PC using the SHELXTL program. The detailed crystal determination data are shown in Table 1. structure see figure 1 .
[0039] Table 1
[0040] Complex MAF-49 MAF-49·H 2 O
[0041] R 1 =∑|| F o | - | F c || / ∑| F o |. wR 2 =[∑ w ( F o 2 - F c 2 ) 2 / ∑ w ( F o 2 ) 2 ] 1 / 2 . ...
Example
[0042] Example 3 Thermal stability characterization of porous coordination polymer MAF-49 obtained in Example 1
[0043] The thermal stability of the porous material was obtained by thermogravimetric analysis. The MAF-49 provided by the invention has excellent thermal stability and can be stable to 723 K. See the thermogravimetric curve image 3 .
[0044] At the same time, in the present invention, the synthesized MAF-49 is directly immersed in an aqueous solution of 4 ≤ pH ≤ 12. After structural determination and characterization, its frame structure will not be destroyed, showing its good acid-base stability, and the corresponding powder diffraction characterization See figure 2 .
[0045] Example 4 Characterization of gas adsorption properties of porous coordination polymer MAF-49 obtained in Example 1
[0046] The porous material to remove the guest was put into a quartz sample tube, and then its methane (CH 4 ), carbon dioxide (CO 2 ), ethane (C 2 H 6 ) and eth...
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