Separation method of C5 olefin mixture

A separation method, the technology of carbon pentaolefins, applied in the field of chemical engineering, can solve the problems of low adsorption capacity, selectivity and adsorption capacity at the same time, and achieve large pore volume, high separation selectivity and adsorption capacity, and synthetic The effect of mild conditions

Active Publication Date: 2020-07-24
QUZHOU RES INST OF ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2018, Huang Feihe et al. studied the separation of C5 monoolefin isomers by columnar EtP5α materials. This material can identify α and β olefin isomers, and has stable and reproducible chemical properties, but the adsorption capacity is not high (Linear Positional Isomer Sorting in Nonporous AdaptiveCrystals of a Pillar[5]arene[J].J.AM.CHEM.SOC.2018,140-9,3190-3193)
[0006]It can be seen that the selectivity and adsorption capacity of existing MOFs materials for the separation of C5 olefins cannot be achieved at the same time, and it is urgent to develop new separation materials and separation methods

Method used

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  • Separation method of C5 olefin mixture
  • Separation method of C5 olefin mixture
  • Separation method of C5 olefin mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1.0mmol Ni(BF 4 ) 2 , 1.0mmol (NH4) 2 TiF 6 Dissolve in 10mL of anhydrous methanol, dissolve 1.5mmol of 1,2-dipyridylacetylene in 10mL of methanol, and mix and stir the two solutions at 20-85°C. After the reaction is completed, the product is obtained by suction filtration. The product is washed with methanol for 3 to 4 times and then soaked in methanol for activation for 1 day. Vacuum activation at 85°C for 24 hours yielded a fluorine-containing anion hybrid porous material TIFSIX-2-Ni-i with flexible functions.

[0054] Measure the one-component adsorption isotherm of TIFSIX-2-Ni-i at 298K for 1-pentene, trans-2-pentene, and isoprene. The results are as follows image 3 As shown, it is shown that this material can achieve the separation of the above-mentioned C5 olefin components.

Embodiment 2

[0056] 1.0mmol Cu(BF 4 ) 2 · H2O, 1.0mmol (NH 4 ) 2 GeF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix and stir at 65°C for 24h, filter the material with suction, wash with methanol for 3-4 times, and activate in vacuum at room temperature for 24h to obtain Fluorine-containing anion hybrid porous material GeFSIX-2-Cu-i with flexible functions.

[0057] Measure the one-component adsorption isotherm of GeFSIX-2-Cu-i at 298K for 1-pentene, trans-2-pentene, and isoprene. The results are as follows Figure 4 As shown, it is shown that this material can achieve the separation of the above-mentioned C5 olefin components.

Embodiment 3

[0059] 1.0mmol Cu(BF 4 ) 2 · H2O, 1.0mmol (NH 4 ) 2 SiF 6 Dissolve in 10mL of water, dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix and stir the two at 85°C for 12h, filter the material with suction, wash with methanol for 3-4 times, activate in vacuum at 65°C for 24h, A fluorine-containing anion hybrid porous material SIFSIX-2-Cu-i with flexible functions was obtained.

[0060] Measure the one-component adsorption isotherm of SIFSIX-2-Cu-i at 298K for 1-pentene, trans-2-pentene and isoprene, the results are as follows Figure 5 As shown, it is shown that this material can achieve the separation of the above-mentioned C5 olefin components.

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Abstract

The invention discloses a separation method of a C5 olefin mixture. The C5 olefin mixture contains isoprene. According to the separation method, a fluorine-containing anion hybrid porous material witha flexible function is used as a separation adsorbent, and the C5 olefin mixture is in contact adsorption with the separation adsorbent to realize separation of the isoprene from other C5 olefins; the fluorine-containing anion hybrid porous material has a double interpenetrating structure, the structural general formula is A-(C12H8N2)-M, and M is a metal ion and is selected from Cu < 2 + >, Zn <2 + >, Co < 2 + > or Ni < 2 + >; A is an inorganic fluorine-containing anion and is selected from SiF6 < 2->, TiF6 < 2->, GeF6 < 2-> or NbOF52 <->; and C12H8N2 is an organic ligand, namely 1, 2-dipyridyl acetylene.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a method for separating a carbonpentaolefin mixture. Background technique [0002] The deep separation and purification of carbon five (C5) olefins has important industrial value, and the components with high utilization value and high content include isoprene, cyclopentadiene and piperylene, and the three account for about C5 total. 40%-60% of the components. These dienes have special molecular structures and lively chemical properties, and are valuable basic chemical raw materials. Isoprene (polymerization grade and chemical grade) has a wide range of uses in the production of synthetic rubber, pharmaceutical and pesticide intermediates, synthetic lubricating oil additives, and rubber vulcanizing agents, and its development and utilization prospects are very broad. [0003] The difficulty in the separation and purification of isoprene is that the C5 fraction cont...

Claims

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Application Information

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IPC IPC(8): C07C7/12C07C11/18B01D15/08
CPCC07C7/12B01D15/08C07C11/18
Inventor 崔希利余颖邢华斌
Owner QUZHOU RES INST OF ZHEJIANG UNIV
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