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Preparation method and application of iron-based MOFs immobilized ionic liquid

An ionic liquid, iron-based technology, applied in chemical instruments and methods, chemical/physical processes, refining to remove heteroatoms, etc. Low investment, good effect, easy recovery effect

Pending Publication Date: 2020-03-27
FUQING BRANCH OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the 21st century, automobiles have brought great convenience to human beings, but the burning of sulfur-containing gasoline has caused frequent smog and haze, seriously endangering public health
To achieve deep desulfurization, it needs to be carried out under harsh conditions, such as high temperature and high pressure, high hydrogen consumption, expensive precious metal catalysts, etc., which will lead to an increase in gasoline costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method of iron-based MOFs immobilized ionic liquid is specifically the following steps:

[0032] S1 ionic liquid [Ps-N-(Bz) 3 ] Formation of TSA: Dissolve 0.1 molar parts of 1,3-propane sultone in 100 volume parts of ethyl acetate, slowly add 0.1 molar parts of tribenzylamine under ice bath, at 40~60℃ React for 8-12 hours, centrifuge, wash, and vacuum-dry to obtain a white precursor salt solid; add 20-30 ml of distilled water to the white precursor salt solid, and slowly dropwise add p-Toluenesulfonic acid solution, react at 80-100°C for 10-16 hours, remove water by rotary evaporation, wash 3 times with 2-3 times ethyl acetate, remove ethyl acetate by rotary evaporation and vacuum dry to obtain ionic liquid [Ps-N-(Bz) 3 ]TSA;

[0033] Generation of S2 iron-based MOFs immobilized ionic liquid: the ionic liquid [Ps-N-(Bz) obtained in step S1 3 ]TSA, ferric nitrate, nitric acid and trimesic acid are in molar ratio (0.08~0.15):(0.08~0.15):(0.08~0.15):1 a...

Embodiment 1

[0037] Iron-based MOFs immobilized ionic liquid, which includes: iron-based MOFs and ionic liquid fixed on iron-based MOFs, iron-based MOFs is MIL-100(Fe), ionic liquid is [Ps-N-(Bz) 3 ] TSA.

Embodiment 2

[0039] The preparation method of iron-based MOFs immobilized ionic liquid is specifically the following steps:

[0040] S1 ionic liquid [Ps-N-(Bz) 3 ] Formation of TSA: Dissolve 0.1 mol of 1,3-propane sultone in 100 mL of ethyl acetate, slowly add 0.1 mol of tribenzylamine under ice bath, react at 40°C for 8 hours, centrifuge, After washing and vacuum drying, a white precursor salt solid was obtained; 20 ml of distilled water was added to the obtained white precursor salt solid, and a p-toluenesulfonic acid solution equimolar to the white precursor salt solid was slowly added dropwise. Reaction under conditions for 10 hours, rotary evaporation to remove water, wash 3 times with its 2 times the volume of ethyl acetate after evaporation to remove water, rotary evaporation to remove ethyl acetate and vacuum drying to obtain ionic liquid [Ps-N-(Bz) 3 ]TSA;

[0041] S2 Generation of iron-based MOFs immobilized ionic liquid: 0.08mol of the ionic liquid obtained in step S1 [Ps-N-(B...

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Abstract

The present invention relates to an iron-based MOFs immobilized ionic liquid, which comprises iron-based MOFs and an ionic liquid immobilized on the iron-based MOFs, the iron-based MOFs is MIL-100 (Fe), and the ionic liquid is [Ps-N-(Bz) 3] TSA. A preparation method comprises the following steps: sequentially dissolving 1,3-propanesultone into ethyl acetate; adding tribenzylamine for reaction, then adding a p-toluenesulfonic acid solution for reaction to generate ionic liquid [Ps-N-(Bz) 3] TSA, sequentially adding ferric nitrate, trimesic acid and nitric acid into the ionic liquid for dissolution, and crystallizing to obtain the iron-based MOFs immobilized ionic liquid [Ps-N-(Bz) 3] TSA@MIL-100 (Fe). When the iron-based MOFs immobilized ionic liquid is applied to deep desulfurization of gasoline, the required reaction conditions are mild, the equipment investment is low, the deep desulfurization effect is good, recovery is easy, and repeated use can be realized.

Description

technical field [0001] The invention relates to an immobilized ionic liquid, in particular to an iron-based MOFs immobilized ionic liquid and a preparation method thereof. Background technique [0002] MIL-100(Fe): It is a tricarboxylic acid polymer of Fe(Ⅲ) and terephthalic acid. There are two kinds of mesoporous cages in the skeleton structure, and the pore diameters are 2.5nm and 2.9nm respectively, with high specific surface area , strong thermal stability, often used to adsorb organic substances. MIL-100(Fe) is a kind of MOFs (metal organic framework compound) material, which is based on terephthalic acid (H 2 BDC) is an organic ligand, and metal Fe 3+ Construction of three-dimensional metal-organic framework materials. [0003] Ionic liquids refer to salts that are liquid at or near room temperature and are composed entirely of anions and cations, also known as low-temperature molten salts. As an ionic compound, the main reason for the low melting point of ionic li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C10G45/04
CPCB01J31/0279B01J31/0285B01J31/0295B01J31/1691B01J31/2239C10G45/04C10G2300/202B01J2531/842
Inventor 杨金杯俞舒月陈文韬王昌伟余美琼陈玉成
Owner FUQING BRANCH OF FUJIAN NORMAL UNIV
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