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Coordination polymer porous material MAF-X8 and preparing method and application thereof

A MAF-X8, coordination polymer technology, applied in the field of coordination polymer porous material MAF-X8 and its preparation, can solve the problem of poor thermal stability and chemical stability, poor selectivity or anti-interference ability, adsorption equilibrium time Long and other problems, to achieve the effect of good water stability, short desorption time and low detection line

Inactive Publication Date: 2012-11-14
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The core of this technology lies in the solid-phase coating material and coating technology of the probe. However, due to the lack of mature adsorption materials, the current commercial probes and laboratory-made probes still face the problem of low enrichment and thermal stability. and poor chemical stability, poor reproducibility, long adsorption equilibrium time, and poor selectivity or anti-interference ability

Method used

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  • Coordination polymer porous material MAF-X8 and preparing method and application thereof
  • Coordination polymer porous material MAF-X8 and preparing method and application thereof
  • Coordination polymer porous material MAF-X8 and preparing method and application thereof

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Effect test

Embodiment 1

[0032] Embodiment 1 Zinc pyrazole benzoate porous material MAF-X8 single crystal preparation

[0033] Ligand H 2 mpba (0.022g, 0.1mmol), Zn (NO 3 ) 2 ·6H 2 O (0.030g, 0.1mmol), N,N-dimethylacetamide (DMA, 0.1mL), ethanol (2.5mL), water (2.5mL) and trimethylbenzene (1.0mL) were added to the hydrothermal reaction In the kettle, it was heated to 120° C. for 3 days to obtain a colorless MAF-X8 single crystal with a yield of 54%.

Embodiment 2

[0034] Example 2 Preparation of a large amount of powder of zinc pyrazole benzoate porous material MAF-X8

[0035] H 2 mpba (0.0108g, 0.5mmol), Zn (NO 3 ) 2 ·6H 2 O (0.150g, 0.5mmol), DMA (3.0mL), and methanol (9mL) were added together into a hydrothermal reaction kettle, heated to 120°C for 1 day, cooled to room temperature, washed with DMA and methanol to obtain White to pale yellow powder, yield 62%. The obtained powder was heated at 200°C for 30 min under a nitrogen atmosphere to remove the guest molecules, and the guest-free MAF-X8 could be obtained. The X-ray diffraction pattern of the product is shown in figure 2 .

Embodiment 3

[0036] Example 3 Structural Characterization of MAF-X8 Containing Guest Molecules and No Guest

[0037] Single crystal X-ray diffraction data were collected on a Bruker Smart APEX CCD diffractometer, graphite monochromator, with X-rays, data were collected in ω-scan mode, and absorption correction was performed using the SADABS 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 organic hydrogen atoms of the compound are obtained by the theoretical hydrogenation method, and the hydrogen of the guest water molecule is found by the difference Fourier map. 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 .

[0038] Table 1

[0039]

[0040]

[0041] [a] R 1 =∑||F o |-|F ...

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Abstract

The invention discloses a coordination polymer porous material MAF-X8 and a preparing method and an application thereof. The chemical formula of the coordination polymer porous material MAF-X8 is [Zn (mpba)], wherein the [Zn (mpba)] represents negative ions obtained by removing protons of an organic ligand 2-(3,5-Dimethyl-1H-pyrazol-4-yl) benzoic acid (H2mbpa). MAF-X8 crystals are in an orthorhombic system, an Ibca space group, and in a three-dimensional frame structure with a single-dimensional pore passage formed through the bridging of mbpa2-ligands and quadridentate Zn2+ ions and with a pore rate of 50%, the Langmuir specific surface is larger than 1300m2 / g, and good ghermal stability and chemical stability are provided. Particularly, the coordination polymer porous material MAF-X8 can be conveniently manufactured into thin films to be applied in solid phase micro extraction (SPME), and shows high accumulation ability and adsorption selectivity to non-polar benzene series, and has short adsorption and desorption time, low detection limit, wide linear range and the like simultaneously.

Description

technical field [0001] The invention relates to the field of microporous coordination polymer porous materials, in particular to a coordination polymer porous material MAF-X8 and a preparation method thereof. Background technique [0002] Porous coordination polymers (PCPs) are crystalline materials composed of metal ions and organic ligands. They have the advantages of large specific surface area, low density, adjustable pore size, and strong modification of the pore surface. They can be widely used in Gas and liquid storage, separation, heterogeneous catalysis and other fields (US 5862796; US 6624318; US 6930193; US 7196210; US 20080121105). [0003] Although the commonly used polycarboxylic acid organic ligands have various coordination modes and are conducive to the formation of rich network structures, most of the PCPs constructed with them have low stability. In recent years, many studies have shown that PCPs constructed by ligands with imidazole or pyrazole groups us...

Claims

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Application Information

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IPC IPC(8): C07F3/06B01J20/22B01J20/30
Inventor 张杰鹏何纯挺洪惠玲陈小明
Owner SUN YAT SEN UNIV
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