A kind of preparation method of hollow porous sulfated zirconia solid superacid nanofiber
A solid super acid, nanofiber technology, applied in hollow filament manufacturing, fiber processing, fiber type and other directions, can solve the problems of low specific surface area, difficult to control morphology, etc., and achieve the effect of high specific surface area
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Embodiment 1
[0038] Step 1: Preparation of spinning solution:
[0039]Add 10g of polymer carrier to 100g of good solvent, continue stirring for 8h in a 50°C oil bath to obtain a polymer solution, then add 2g of zirconium dioxide precursor, and stir at room temperature for 4h to obtain an electrospinning solution .
[0040] Step 2: Preparation of nanofibers containing zirconium dioxide precursor:
[0041] injecting the spinning solution in step 1 into an electrospinning device, and preparing nanofibers containing zirconium dioxide precursor by electrospinning;
[0042] Step 3: Surface coating of nanofibers:
[0043] The nanofibers containing the zirconium dioxide precursor in step 2 were placed in a vacuum oven at 70 °C for 8 hours, and then immersed in a precipitant solution with a concentration of 10% by mass, aged for 12 hours at a certain temperature, and washed to obtain a surface covered with hydrogen. Zirconia-coated nanofibers.
[0044] Step 4: Sulfation of Nanofibers:
[0045]...
Embodiment 2
[0057] A method for preparing hollow porous sulfated zirconia solid superacid nanofibers, comprising the following steps:
[0058] Step 1: Preparation of spinning solution:
[0059] Add 15g of polymer carrier to 112g of good solvent, continue stirring for 10h in an oil bath at 70°C to obtain a polymer solution, then add 3g of zirconium dioxide precursor and stir at room temperature for 7h to obtain an electrospinning solution .
[0060] Step 2: Preparation of nanofibers containing zirconium dioxide precursor:
[0061] injecting the spinning solution in step 1 into an electrospinning device, and preparing nanofibers containing zirconium dioxide precursor by electrospinning;
[0062] Step 3: Surface coating of nanofibers:
[0063] The nanofibers containing the zirconium dioxide precursor in step 2 were dried in a vacuum oven at 80 °C for 12 hours, immersed in a precipitant solution with a concentration of 12% by mass, aged for 16 hours at a certain temperature, and washed to ...
Embodiment 3
[0074] A method for preparing hollow porous sulfated zirconia solid superacid nanofibers, comprising the following steps:
[0075] Step 1: Preparation of spinning solution:
[0076] Add 21 g of polymer carrier to 113 g of good solvent, and continue stirring for 12 h in an oil bath at 70 °C to obtain a polymer solution, then add 4 g of zirconium dioxide precursor, and stir at room temperature for 9 h to obtain an electrospinning solution. .
[0077] Step 2: Preparation of nanofibers containing zirconium dioxide precursor:
[0078] injecting the spinning solution in step 1 into an electrospinning device, and preparing nanofibers containing zirconium dioxide precursor by electrospinning;
[0079] Step 3: Surface coating of nanofibers:
[0080] The nanofibers containing the zirconium dioxide precursor in step 2 were dried in a vacuum oven at 85 °C for 19 hours, immersed in a precipitant solution with a concentration of 13% by mass, aged for 20 hours at a certain temperature, an...
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Abstract
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