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Functional cage borane anion-pillared supramolecular microporous framework material, preparation method and application thereof

An anion column and frame material technology, applied in separation methods, chemical instruments and methods, adsorption purification/separation, etc., can solve problems such as applications to be studied, achieve good structural stability, and achieve the effect of selective separation

Active Publication Date: 2019-09-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of caged borane anions with functional group modifications to construct porous framework materials has never been reported, and its application remains to be studied.

Method used

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  • Functional cage borane anion-pillared supramolecular microporous framework material, preparation method and application thereof
  • Functional cage borane anion-pillared supramolecular microporous framework material, preparation method and application thereof
  • Functional cage borane anion-pillared supramolecular microporous framework material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a 50mL round bottom flask, will contain 242mg (1mmol) of Cu(NO 3 ) 2 ·3H 2 O and 314 mg (1 mmol) of Na 2 B 12 h 11 I was dissolved in 10 ml of water. In another 25 mL round bottom flask, 360 mg (2 mmol) of 4,4'-bipyridylacetylene was dissolved in 15 mL of methanol. The methanol solution was slowly added to the aqueous solution, and stirred at 25°C for 24 hours to obtain a gray-purple solid precipitate, which was filtered and washed with methanol. Replace the above solid in anhydrous methanol 3 times with an interval of 12 hours each time to remove the water molecules in the pores of the material, and then degas and activate it at 70°C for 10 hours to obtain the activated functionalized caged dodecaborane anion supramolecule The microporous frame material is named BSF-20.

[0036] The self-assembly behavior of BSF-20 is as figure 1 shown. First, metallic copper ions are coordinated to four different pyridine rings in the horizontal direction and to B–H of two...

Embodiment 2

[0054] In a 50mL round bottom flask, will contain 242mg (1mmol) of Cu(NO 3 ) 2 ·3H 2 O and 314 mg (1 mmol) of Na 2 B 12 h 11 I was dissolved in 10 ml of water. In another 25 mL round bottom flask, 312 mg (2 mmol) of bipyridyl was dissolved in 15 mL of methanol. The methanol solution was slowly added to the aqueous solution, and stirred at 25° C. for 2 h to obtain a gray-purple solid precipitate, which was filtered and washed with methanol. Replace the above solid in anhydrous methanol 3 times with an interval of 12 hours each time to remove the water molecules in the pores of the material, and then degas and activate it at 80°C for 5 hours to obtain the activated functionalized caged dodecaborane anion supramolecule Microporous frame material, named BSF-21.

Embodiment 3

[0056] In a 50mL round bottom flask, will contain 242mg (1mmol) of Cu(NO 3 ) 2 ·3H 2 O and 314 mg (1 mmol) of Na 2 B 12 h 11 I was dissolved in 10 ml of water. In another 25 mL round bottom flask, 464 mg (2 mmol) of bipyridylbenzene was dissolved in 15 mL of methanol. The methanol solution was slowly added to the aqueous solution, and stirred at 25°C for 48 hours to obtain a gray-purple solid precipitate, which was filtered and washed with methanol. Replace the above solid in anhydrous methanol 3 times with an interval of 8 hours each time to remove the water molecules in the pores of the material, and then degas and activate it at 100°C for 10 hours to obtain the activated functionalized caged dodecaborane anion supramolecule Microporous frame material, named BSF-22.

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Abstract

The invention discloses a functional cage borane anion-pillared supramolecular microporous framework material. Metal Cu<2+> ions coordinate with organic nitrogen-containing ligand L to form a two-dimensional plane structure, which is then bridged to iodine-substituted functional cage dodecaborane anion[B12H11I]<2-> to form a three-dimensional layered columnar framework structure. The functional cage borane anion-pillared supramolecular microporous framework material provided by the invention can be used for selective purification of methane, specifically in high selective adsorption and separation of propylene / methane, propane / methane, ethane / methane, ethylene / methane, and acetylene / methane, and the obtained high purity methane gas and recovered low-carbon hydrocarbon of C2-C3 can be usedfor selective adsorption and separation of natural gas, biogas, pyrolysis gas and other industrial mixed gas containing a lot of methane.

Description

technical field [0001] The invention relates to the technical field of synthesis of porous materials and gas adsorption and separation, in particular to a supramolecular microporous frame material supported by functionalized caged borane anion pillars, a preparation method and application thereof. Background technique [0002] Adsorption separation is a relatively energy-saving and efficient separation technology, which has the advantages of simple operation and high removal depth. With the development of porous materials such as molecular sieves, porous polymers (Porous Coordination Polymers, PCPs), metal-organic frameworks (metal-organic frameworks, MOFs) Low performance, insufficient processing capacity and other shortcomings. Designing new adsorbents to improve adsorption capacity and selectivity is the key to the application of adsorption separation technology to gas separation. [0003] Anionic pillared microporous framework materials are a kind of organic-inorganic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02C10L3/10C08G83/00C07C7/12C07C9/04
CPCB01D53/02B01D2256/245B01D2257/7022B01J20/226B01J2220/4806B01J2220/4812C07C7/12C08G83/008C10L3/10C07C9/04Y02P30/40
Inventor 邢华斌张袁斌崔希利赵宁
Owner ZHEJIANG UNIV
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