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A stable in metal-organic framework in boiling water and hydrochloric acid aqueous solution, preparation method and application thereof

A hydrochloric acid aqueous solution and organic framework technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve problems such as unsatisfactory stability, restricting structural chemical stability, not very stable, etc., to achieve easy The effect of implementation, novel structure and simple process

Inactive Publication Date: 2019-05-03
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In metal-organic framework materials occupy a place in the large family of MOFs materials, but the stability of most In-MOFs is not so satisfactory, the main reason is (1) the coordination formed by In atoms and oxygen or nitrogen The bond is not a very stable type. In the aqueous solution system, it is easily destroyed by the attack of water molecules; (2) In metal-organic framework materials are generally ionic frameworks (mostly anionic frameworks), and their channels contain counterweights (cationic frameworks). ) ions to balance the charge, which to some extent restricts the chemical stability of its structure

Method used

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  • A stable in metal-organic framework in boiling water and hydrochloric acid aqueous solution, preparation method and application thereof
  • A stable in metal-organic framework in boiling water and hydrochloric acid aqueous solution, preparation method and application thereof
  • A stable in metal-organic framework in boiling water and hydrochloric acid aqueous solution, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put the synthesized X (10mg ~ 20mg) in a 10mL isotope bottle, add 8mL of dichloromethane into the bottle, then tighten the bottle cap, place it in a dry and ventilated place at room temperature, open the bottle cap after every 8 hours, put the bottle After the dichloromethane in the mixture was aspirated, fresh dichloromethane (8 mL) was added, and this process was repeated 3 to 5 times to obtain Z (10 mg to 20 mg).

Embodiment 2

[0030] Put the synthesized X (20mg~30mg) in a 10mL isotope bottle, add 8mL of dichloromethane into the bottle, then tighten the bottle cap, put it in a dry and ventilated place at room temperature, open the bottle cap after every 8 hours, put the bottle After sucking out the dichloromethane in the mixture, fresh dichloromethane (8 mL) was added, and this process was repeated 3 to 5 times to obtain Z (20 mg to 30 mg).

Embodiment 3

[0032] Put the synthesized X (100mg ~ 200mg) in a 20mL isotope bottle, add 15mL of dichloromethane into the bottle, then tighten the bottle cap, put it in a dry and ventilated place at room temperature, open the bottle cap after every 8 hours, put the bottle After the dichloromethane in the mixture was aspirated, fresh dichloromethane (15 mL) was added, and this process was repeated 5 to 7 times to obtain Z (100 mg to 200 mg).

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Abstract

The invention discloses a stable In-metal-organic skeleton in boiling water and hydrochloric acid aqueous solution, and a preparation method and application thereof, and belongs to the technical field of crystalline state materials. A chemical molecular formula is [In3(TTTA)2(OH)3], wherein the TTTA is an organic ligand, namely, (2E,2'E,2''E)-3,3'-3''-(2,4,6-trimethyl)-isotriacrylic acid. According to the stable In-metal-organic skeleton in the boiling water and the hydrochloric acid aqueous solution, and the preparation method and the application thereof, the [In3(TTTA)2(OH)3] is soaked in dichloromethane solution for activating and is subjected to a single-crystal-to-single-crystal transformation process to obtain a new material; the In-metal-organic skeleton can still remain the stability of a structure after being treated by the boiling water and the hydrochloric acid aqueous solution with the pH of 4; moreover, the In-metal-organic skeleton has large hole size and specific surface area, and can be used as an adsorption material for selectively adsorbing and separating C2H2 / CO2 and C2H2 / CH4.

Description

technical field [0001] The invention belongs to the technical field of crystalline materials, and the technology relates to metal-organic coordination polymer materials, especially a metal-organic framework (MOF) of indium (In) stable in boiling water and hydrochloric acid aqueous solution, from single crystal to single Crystal transformation process and its application. technical background [0002] Industrial gases are called the "blood" of industry. With the rapid development of China's economy, industrial gas, as one of the basic industrial elements of the national economy, has become increasingly prominent in its important position and role in the national economy. According to the specific use of different industrial production links, there are extremely strict requirements on the purity or composition of different gases, the maximum allowable content of harmful impurities, product packaging, storage and transportation, etc., which are high-tech, high value-added prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01D53/02B01D2253/204B01D2257/7022B01J20/0248B01J20/226Y02C20/40
Inventor 俞嘉梅郭振济王德超吴玉锋
Owner BEIJING UNIV OF TECH