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Layered porous material for adsorbing and separating allylene and propylene and preparation method and application thereof

A propyne, propyne, adsorption separation technology, applied in the field of chemical engineering, can solve problems such as the inability to realize the adsorption of propyne and exclusion of propyne, and achieve the effects of good industrial application prospects, large adsorption capacity, and complete crystal structure

Active Publication Date: 2020-06-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found through experiments that when the adsorbent used in this patented technology is applied to the adsorption and separation of propyne, there is essentially simultaneous adsorption of propyne, and it is impossible to achieve the simultaneous adsorption of propyne and exclusion of propyne.

Method used

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  • Layered porous material for adsorbing and separating allylene and propylene and preparation method and application thereof
  • Layered porous material for adsorbing and separating allylene and propylene and preparation method and application thereof
  • Layered porous material for adsorbing and separating allylene and propylene and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 10mL containing 0.25mmol Cu (BF 4 ) 2 ·H 2 O, (NH 4 ) 2 GeF 6 The aqueous solution of the solution was added dropwise to 10 mL of methanol solution containing 0.5 mmol 4,4-dipyridine sulfide, and then 20 mL of the mixed solution in which metal salts, inorganic anions and organic ligands were dissolved was placed in an oven at 80 ° C for 48 h. After the reaction, blue crystals were obtained, and the obtained product was filtered, washed with methanol and left to stand for 3 days, and the methanol was replaced every other day during the process, and then activated by vacuum at 100°C for 24 hours to obtain the GeFSIX-dps-Cu layered porous material.

[0061] The thermogravimetric curve of the GeFSIX-dps-Cu layered porous material obtained in the present embodiment is as follows figure 1 As shown, it has high thermal stability.

[0062] The adsorption isotherm of the GeFSIX-dps-Cu layered porous material obtained in this embodiment to propargyl propene at 298K is as fo...

Embodiment 2

[0065] 10mL containing 0.25mmol ZnGeF 6 10 mL of methanol solution containing 0.5 mmol 4,4-dipyridine sulfide dropwise, and then 20 mL of the mixed solution in which metal salts, inorganic anions and organic ligands were dissolved was reacted at room temperature for 72 hours. After the reaction, white crystals were obtained. The obtained product was filtered, washed with methanol and left to stand for 3 days, and the methanol was replaced every other day during the process. After that, it was activated under vacuum for 24 hours at room temperature to obtain GeFSIX-dps-Zn layered porous material.

[0066] The thermogravimetric curve of the GeFSIX-dps-Zn layered porous material obtained in the present embodiment is as follows Figure 4 As shown, it has high thermal stability.

[0067] The adsorption isotherm of the GeFSIX-dps-Zn layered porous material obtained in this example to propargyl propene at 298K is as follows Figure 5 As shown, the material has a higher propyne adso...

Embodiment 3

[0070] 10mL containing 0.25mmol Cu (BF 4 ) 2 ·H 2 O, (NH 4 ) 2 TiF 6 The aqueous solution of the solution was added dropwise to 10 mL of methanol solution containing 0.5 mmol 4,4-dipyridine sulfide, and then 20 mL of the mixed solution in which metal salts, inorganic anions and organic ligands were dissolved was placed in an oven at 80 ° C for 48 h. After the reaction, blue crystals were obtained, and the obtained product was filtered, washed with methanol and left to stand for 3 days, and the methanol was replaced every other day during the process, and then activated by vacuum at 100°C for 24 hours to obtain TiFSIX-dps-Cu layered porous material.

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Abstract

The invention discloses a layered porous material for adsorbing and separating allylene and propylene, which has periodic intra-layer rhombic pore channels and interlayer broken line type pore channels, is formed by metal ions M, inorganic anions A and organic ligands L through coordination bonds and supramolecular action, and has a structural general formula of ML2A, wherein the metal ion M is atleast one of Fe<2+>, Co<2+>, Ni<2+>, Cu<2+> and Zn<2+>, the inorganic anion A is at least one of TiF6<2->, GeF6< 2->, NbOF5<->, ZrF6<2-> and SnF6<2->, and the structural formula of the organic ligandL is shown in the specification, wherein R1 to R8 are independently selected from H, F, Cl, Br, I, CH3, NH2, OH or COOH respectively. The invention further discloses a method for adsorbing and separating allylene and propylene, the layered porous material is used as an adsorbent, the adsorbent is in contact with mixed gas containing allylene and propylene, allylene is selectively adsorbed, and separation of allylene and propylene is achieved.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a layered porous material used for adsorption and separation of propargyl, a preparation method and application thereof. Background technique [0002] Propylene is an important olefin product in the world's petrochemical industry. It is mainly derived from steam cracking in industry. It is mainly used for polymerizing monomers to produce downstream products such as polypropylene. It is widely used in various national economic industries such as plastics, pharmaceuticals, textiles, and coatings. Propyne is a by-product accompanying the production of propylene. The separation of propyne and propylene is a crucial step in industrial production. Because the molecular size of propyne / propylene is not much different and the physical properties are similar, the separation between propyne / propylene gas exists Considerable technical challenge. [0003] At present, the separa...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C07C7/12C07C11/06C07C11/22
CPCB01J20/223B01J20/28035B01J2220/4806B01J2220/4812C07C7/12C07C11/06C07C11/22
Inventor 杨启炜柯天任其龙杨亦文张治国鲍宗必
Owner ZHEJIANG UNIV
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