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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

Active Publication Date: 2017-04-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the purity of ethylene obtained from a single separation of existing materials is up to 99%, and multiple purifications are required to meet the requirement of 99.95%+ for polymerization grade
[0004] In view of the ratio, the present invention seeks to provide a coordination polymer material that can solve the problems of high energy consumption and separation efficiency that cannot meet the requirements of polymerization grade in the separation and purification process in the prior art

Method used

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  • A kind of coordination polymer porous material maf-49 and its preparation method and application
  • A kind of coordination polymer porous material maf-49 and its preparation method and application
  • A kind of coordination polymer porous material maf-49 and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Porous material MAF-49 single crystal preparation

[0035] Ligand H 2 Batz is synthesized according to the prior art method;

[0036] 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 into a hydrothermal reaction kettle, heated to 160 °C for 3 days to obtain a colorless MAF-49 single crystal, producing The rate is 86%.

Embodiment 2

[0037] Example 2 Structural characterization of MAF-49 with and without guest molecules

[0038] The single crystal X-ray diffraction data were collected on a Bruker Smart APEX CCD diffractometer with a graphite monochromator, using Mo-K rays to collect data in an ω-scan manner, and the absorption correction was performed using the REQAB program. The direct method is used for analysis, and then the coordinates of all non-hydrogen atoms are obtained by the difference Fourier function method and the least square method, and finally the structure is corrected by the least square method. The hydrogen atoms of the compounds are obtained by theoretical hydrogenation. The calculation work is done on the PC using 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 |. wxya 2 =[∑ w ( F o 2 - F c 2 ) 2 / ...

Embodiment 3 Embodiment 1

[0042] Example 3 The thermal stability characterization of the 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 present invention has excellent thermal stability and can be stable to 723 K. For thermogravimetric curves, see 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, and its framework structure will not be destroyed after structural determination and characterization, showing its good acid-base stability, and the corresponding powder diffraction characterization See figure 2 .

[0045] Example 4 Characterization of gas adsorption properties of the 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 )...

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Abstract

The invention provides a coordination polymer porous material MAF-49, a preparation method therefor and an application thereof. A chemical formula of MAF-49 is [Zn(batz)], wherein batz<2-> represents an anion obtained by deprotonation of a ligand H<2>batz with a formula of bis(5-amino-1H-1,2,4-triazol-3-yl)methane; the porous material MAF-49 is crystallized in a space group P3<1>21 in the trigonal crystal system, wherein a is equal to 9.6963 angstroms, and c is equal to 20.126 angstroms; and the MAF-49 is a three-dimensional framework structure with a one-dimensional channel, wherein the three-dimensional framework structure is formed by connecting the batz<2-> ligands and three four-coordination Zn<2+> ions. The porous material MAF-49 has the characteristics of good stability, high ethane adsorption capability and the like, can be used for collecting ethane in natural gas, purifying methane in landfill gas, and recycling ethylene in an ethylene epoxidation product, and also can be used for simply and conveniently separating an ethylene-ethane mixture with low energy consumption to obtain ethylene with a purity of 99.95%+. Therefore, the porous material MAF-49 has a very high industrial application value.

Description

technical field [0001] The invention belongs to the technical field of microporous coordination polymer porous materials, and more specifically relates to a coordination polymer porous material MAF-49 and its preparation method and application. Background technique [0002] Porous coordination polymer (PCP, Porous Coordination Polymer), or metal-organic framework (MOF, Metal-Organic Framework), is a class of crystalline porous materials. It is a complex with periodic network structure and regular channels formed by connecting inorganic metal centers or clusters with organic ligands through coordination bonds. Compared with traditional activated carbon and inorganic porous materials, it not only has a richer and more diverse structure, but also its controllable pore size, modifiable pore surface and selective adsorption function are unmatched by traditional porous materials. The introduction of functional metal ions or clusters or the introduction of functional groups on org...

Claims

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Application Information

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IPC IPC(8): C07F3/06C07D249/14B01J20/22B01D53/02C07C7/12C07C11/04C07C9/04
CPCB01D53/02B01D2256/24B01D2256/245B01D2257/504B01D2257/7022B01J20/226C07C7/12C07D249/14C07F3/003C07C11/04C07C9/04Y02C20/40Y02E50/30Y02P20/151Y02P20/50
Inventor 张杰鹏廖培钦洪惠玲陈小明
Owner SUN YAT SEN UNIV
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