Fluorine cluster-based metal organic framework MFOFs material with high stability, and application thereof

A high stability, organic framework technology, applied in other chemical processes, gas treatment, membrane technology, etc., can solve the problems of OMS not resistant to acid and alkali conditions, limited time length, difficult to use normally, etc.

Pending Publication Date: 2021-09-10
FUJIAN UNIV OF TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many MOFs have been developed and tested for their separation performance for acetylene / carbon dioxide mixtures, such as UTSA-74 (J.Am.Chem.Soc., 2016, 138, 5678-5684.), using open metal centers (OMS) as binding Although MOFs materials with high acetylene adsorption capacity and selectivity have high acetylene adsorption capacity and selectivity, in practical applications, acetylene vapor contains a small amount of water vapor and acidic corrosive gases, while a large amount of OMS is not resistant to acid and alkali conditions, resulting in its structure The stability is poor, and the length of time in the penetration test is limited, so it is difficult to use normally under industrial conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fluorine cluster-based metal organic framework MFOFs material with high stability, and application thereof
  • Fluorine cluster-based metal organic framework MFOFs material with high stability, and application thereof
  • Fluorine cluster-based metal organic framework MFOFs material with high stability, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Fluorine cluster-based MFOFs materials [Co 4 (μ 3 -F) 3 (μ 3 -SO 4 )(btb)(tpt) 2 ] The preparation method of (MFOF-1) crystal comprises the steps:

[0044] Weigh CoSO 4 ·6H 2 O (0.028g, 0.10mmol), 2,4,6-tris(4-pyridyl)-1,3,5-triazine (tpt) (0.016g, 0.050mmol), 1,3,5-tris( 4-carboxyphenyl)benzene (btb) (0.022g, 0.050mmol) was put into a 20mL glass bottle, and N,N dimethylacetamide (5mL) / methanol (5mL) / 1,4- Dioxane (1mL) solvent, sonicated for 30min, then added 100mL HBF 4 (tetrafluoroboric acid, 40wt% aqueous solution) for acidification; finally the mixed suspension was sealed and kept in a circulating oven at 100°C for 2 days, then collected, washed, and vacuum-dried to obtain the target product red octahedral crystal MFOF- 1.

[0045] The crystal MFOF-1 was soaked in acetone solvent, and the solvent was exchanged every 12 hours. After six exchanges, it was activated under vacuum at 120°C for 8 hours to obtain MFOF-1 crystals that could be used for adsorption ...

Embodiment 2

[0047] Fluorine cluster-based MFOFs materials [Ni 4 (μ 3 -F) 3 (μ 3 -SO 4 )(btb)(tpt) 2 ] The preparation method of (MFOF-2) crystal comprises the steps:

[0048] Weigh NiSO 4 ·7H 2 O (0.056g, 0.20mmol), 2,4,6-tris(4-pyridyl)-1,3,5-triazine (tpt) (0.031g, 0.10mmol), 1,3,5-tris( 4-carboxyphenyl)benzene (btb) (0.044g, 0.10mmol) was put into a 20mL glass bottle, and N,N dimethylformamide (5mL) / methanol (5mL) / 1,4- Dioxane (1 mL) solvent, sonicated for 30 min, then added 300 μL H 2 SiF 6 (fluorosilicic acid, 35wt% aqueous solution) for acidification; finally the mixed suspension was sealed and kept in a 120°C circulation oven for 7 days, then collected, washed, and vacuum-dried to obtain the target product green octahedral crystal MFOF- 2.

[0049] The crystal MFOF-2 was soaked in methanol solvent, and the solvent was exchanged every 12 hours. After six exchanges, it was activated under vacuum at 100°C for 15 hours to obtain the MFOF-2 crystal for adsorption test.

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a fluorine-cluster-based metal organic framework MFOFs material with high stability, and application thereof. The structural general formula of the metal organic framework material is [M4([mu]3-F)3([mu]3-SO4)(L1)(L2)2], wherein M in the formula is zinc, iron, cobalt, nickel, manganese and cadmium, L1 is 1, 3, 5-tris(4-carboxyphenyl)benzene (btb), or 2, 4, 6-tris(4-carboxyphenyl)-1, 3, 5-triazine (tatb), and L2 is 2, 4, 6-tris(4-pyridyl)-1, 3, 5-triazine (tpt), 2, 4, 6-tris (4-pyridyl)pyridine (pytpy) or 1, 3, 5-tris(4-pyridyl)benzene (tpb). The activated MFOFs material can be used as an adsorbent to realize separation of acetylene/carbon dioxide mixed gas; and the prepared material has high acetylene adsorption capacity and high selectivity, the acetylene/carbon dioxide penetration duration of [Co4([mu]3-F)3([mu]3-SO4)(btb)(tpt)2] at normal temperature and normal pressure reaches up to 52 min/g, the duration after multiple penetration experiments is still kept unchanged, efficient acetylene/carbon dioxide selective adsorption performance is reflected, and effective separation of acetylene/carbon dioxide can be achieved.

Description

technical field [0001] The invention belongs to the technical field of acetylene separation and purification, and in particular relates to a highly stable fluorine cluster-based metal organic framework MFOFs material and its application. Background technique [0002] Acetylene (C 2 h 2 ) is not only widely used as a gaseous fuel for lighting and metal processing, but also an important raw material for the manufacture of plastics, rubber, fibers, and platform chemicals such as acetaldehyde, acetic acid, and benzene. Although acetylene plays an important role in daily life and chemical industry, in order to promote its wider practical application, it is urgent to solve the problem of separation, purification and storage of acetylene. The industrial production of acetylene comes from the pyrolysis of natural gas, in which the by-product carbon dioxide is unavoidable. Therefore, in order to obtain high-purity acetylene, carbon dioxide and uncracked methane need to be removed....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/04
CPCB01J20/226B01D53/0462B01D53/0454B01D2253/204B01D2257/702B01D2256/22Y02C20/40
Inventor 张磊游建钧朱锦鸿李芳芳王乾廷陈文哲
Owner FUJIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap