A rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application

An organic framework and tetracarboxyl technology, applied in the field of organic optoelectronic materials, can solve problems such as separation difficulties, and achieve the effects of simple preparation process, easy recycling and regeneration, and good separation stability

Active Publication Date: 2022-02-22
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, since C 3 h 4 / C 3 h 6 The kinetic diameter and molecular size are similar, and the separation is more difficult
for C 3 h 4 / C 3 h 6 Separated HOFs materials are still in the blank

Method used

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  • A rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application
  • A rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application
  • A rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application

Examples

Experimental program
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Effect test

Embodiment

[0049] HOF-30-C 1 , HOF-30-C 2 , HOF-30-C 3 and the synthesis of HOF-30a

[0050] The aforementioned HOF-30-C 1 The specific synthesis method is: under heating conditions, 50.0 mg N, N, N', N' -Tetrakis(4-carboxyphenyl)-1,4-phenylenediamine ligand was dissolved in methanol (100.0 mL). Filter the solution while it is hot (25-80°C) and let it cool down at room temperature naturally. Yellow octahedral crystals (HOF-30-C 1 ) 35.0 mg, yield: 70%. Such as figure 1 as shown,

[0051] The aforementioned HOF-30-C 2 The specific synthesis method is as follows: 50.0 mg of N,N,N',N'-tetrakis(4-carboxyphenyl)-1,4-phenylenediamine ligand was dissolved in ethanol (50.0 mL) under heating conditions middle. Filter the solution while it is hot (25-80°C) and let it cool naturally. Yellow octahedral crystals (HOF-30-C 2 ) 37.5 mg, yield: 75%. Such as figure 2 as shown,

[0052] In the foregoing, under the condition of heating, 250.0 mg N, N, N', N' -Tetrakis(4-carboxyphenyl)-...

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Abstract

The invention belongs to the technical field of organic photoelectric materials, and in particular relates to a rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application. The rigid tetracarboxyl hydrogen-bonded organic framework material monomer molecule H 4 TPA is: N, N, N', N'-tetra(4-carboxyphenyl)-1,4-phenylenediamine, this framework belongs to the orthorhombic crystal system, the space group is Ibca, α=β=γ=90 °, Z=8, each tetrahedron H 4 The TPA molecule is connected to the adjacent four H through four pairs of intermolecular ‑COOH··HOOC‑hydrogen bonds. 4 TPA molecules are connected, and the distance of O···O and the angle of O‑H···O are 171° and 171°, respectively. The beneficial effects of the present invention are: the rigid tetracarboxyl hydrogen-bonded organic framework material of the present invention has simple preparation process and low cost, and is applicable to C 3 H 4 / C 3 H 6 Selective separation and adsorption of propylene propyne in mixed gas, easy recovery and regeneration, and good separation stability.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric materials, and in particular relates to a rigid tetracarboxyl hydrogen-bonded organic framework material and its preparation and application. Background technique [0002] At present, propylene is one of the most important chemical raw materials in the world (the global production capacity will exceed 116 million tons in 2020), and propyne impurities will inevitably be produced in the production process, and the existence of very low concentration (≥ 1 ppm) propyne will cause Significant impact on downstream polypropylene production. Therefore, it is of great industrial and scientific significance to realize the high-efficiency purification of low-concentration propyne in propylene. In the traditional petrochemical industry, the separation of propyne mainly adopts low-temperature refining or catalytic hydrogenation process, which has the disadvantages of high energy consumption and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/26B01J20/30C07C7/12C07C11/06C07C11/22
CPCC08G83/008B01J20/262C07C7/12
Inventor 于宝秋王海龙姜建壮刘小琳
Owner UNIV OF SCI & TECH BEIJING
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