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A method and application of electrospinning to prepare zirconium-loaded pan composites

A technology of electrospinning and composite materials, which is applied in the field of catalyst preparation and biomass catalytic conversion, which can solve the problems of complex metal and organic acid catalytic systems, high cost of precious metals that are not suitable for industrial production, and large catalyst loss, etc., to achieve a reaction system Green, cheap and easy to recycle

Active Publication Date: 2021-07-13
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that the experiment is usually in H 2 It is dangerous to carry out under high pressure. In addition, the cost of precious metals is too high to be suitable for industrial production
Hu Li's research group used metal zirconium and organic acid to prepare MOF catalyst Zr-FDCA and applied it to the reaction of furfural to furfuryl alcohol. The yield was only 78%. After adding methyl pyrrolidone and trimethylbenzene, the supported catalyst Zr- FDCA-T, applied to the reaction of furfural to furfuryl alcohol, found that the yield increased to 96%, but the metal and organic acid catalytic system has complicated processes, high cost, and large losses during catalyst recovery

Method used

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  • A method and application of electrospinning to prepare zirconium-loaded pan composites

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Effect test

Embodiment 1

[0025] A method for preparing zirconium-loaded PAN composite material (Zr@PAN) by electrospinning, specifically comprising the following steps:

[0026] (1) Add 2.25g of polyacrylonitrile into 40mL of DMF, the molecular weight of polyacrylonitrile is 150,000, stir at 25°C for 30 minutes to dissolve, and the stirring speed is 400rpm to obtain a polyacrylonitrile solution;

[0027] (2) 2.65gZr(NO 3 ) 4 ·5H 2 O is added in the polyacrylonitrile solution that step (1) obtains, and ultrasonic dispersion is uniform, and the power of ultrasonic dispersion is 25kHz, and the time is 5 minutes, obtains mixed solution;

[0028] (3) Put the mixed solution obtained in step (2) into an oil bath and heat and stir. The temperature of the oil bath is 65°C, the time is 1 hour, and the stirring speed is 18rpm, so that the solution is fully mixed and evenly obtained to obtain the electrospinning precursor solution ;

[0029] (4) Electrospinning the electrospinning precursor solution gained in...

Embodiment 2

[0032] A method for preparing zirconium-loaded PAN composite material (Zr@PAN) by electrospinning, specifically comprising the following steps:

[0033] (1) Add 2.25g of polyacrylonitrile into 40mL of DMF, the molecular weight of polyacrylonitrile is 150,000, stir at 26°C for 30 minutes to dissolve, and the stirring speed is 350rpm to obtain a polyacrylonitrile solution;

[0034] (2) 1.18gZr(NO 3 ) 4 ·5H 2 O is added in the polyacrylonitrile solution that step (1) obtains, and ultrasonic dispersion is uniform, and the power of ultrasonic dispersion is 20kHz, and the time is 10 minutes, obtains mixed solution;

[0035] (3) Put the mixed solution obtained in step (2) into an oil bath and heat and stir. The temperature of the oil bath is 70°C, the time is 1 hour, and the stirring speed is 20 rpm, so that the solution is fully mixed and evenly obtained to obtain the electrospinning precursor solution ;

[0036] (4) Electrospinning the electrospinning precursor solution obtaine...

Embodiment 3

[0039] A method for preparing zirconium-loaded PAN composite material (Zr@PAN) by electrospinning, specifically comprising the following steps:

[0040] (1) Add 2.25g of polyacrylonitrile into 40mL of DMF, the molecular weight of polyacrylonitrile is 150,000, stir at 20°C for 30 minutes to dissolve, and the stirring speed is 400rpm to obtain a polyacrylonitrile solution;

[0041] (2) 4.54gZr(NO 3 ) 4 ·5H 2 O is added in the polyacrylonitrile solution that step (1) obtains, and ultrasonic dispersion is uniform, and the power of ultrasonic dispersion is 22kHz, and the time is 7 minutes, obtains mixed solution;

[0042] (3) Put the mixed solution obtained in step (2) into an oil bath and heat and stir. The temperature of the oil bath is 80°C, the time is 1 hour, and the stirring speed is 15rpm, so that the solution is fully mixed and evenly obtained to obtain the electrospinning precursor solution ;

[0043] (4) Electrospinning the electrospinning precursor solution obtained ...

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Abstract

The invention discloses a method and application of an electrospinning method for preparing a zirconium-loaded PAN composite material. The method is mainly to dissolve metal zirconium ions and polyacrylonitrile in N,N-dimethylformamide to prepare an electrospinning liquid , and then prepared a heterogeneously loaded Zr@PAN composite material by electrospinning technology, and applied the prepared composite material to the transfer hydrogenation reduction of furfural, and obtained the biomass-based energy product furfuryl alcohol with a high yield. The composite material catalyst prepared by the method has the characteristics of high reactivity and good recycling effect, and has broad development prospects.

Description

technical field [0001] The invention relates to a method and application of electrospinning to prepare a zirconium-loaded PAN composite material, and belongs to the technical field of catalyst preparation and biomass catalytic conversion. Background technique [0002] Biomass energy has attracted much attention under the trend of global green environmental protection. Biomass-derived platform compounds can not only realize the secondary utilization of biomass, but also convert it into many chemicals and become substitutes for fossil fuels and chemical products. The three atoms directly connected to the carbonyl carbon atom in the furfural molecule are on the same plane microscopically, and its planar configuration has less resistance to the attack of the reagent, and the carbonyl group has a large polarity and can form a carbonyl positive center. Therefore, Furfural molecules have high chemical activity. The route of preparing furfuryl alcohol by catalytic hydrogenolysis us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J35/06B01J37/34B01J35/10C07D307/44
CPCB01J31/06B01J37/342C07D307/44B01J2231/643B01J35/58B01J35/61B01J35/60
Inventor 张俊华程媛彭林才何亮刘遥
Owner KUNMING UNIV OF SCI & TECH
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